METAGLAS - Disc Type and Flange Type Seite 2/ 3/4 Type 73 / 77 / 177 Sight glasses for sight ports and sightflow indicators. Sight glasses with wiper

Transcription

1 C/Louis Pasteur, Parque Tecnológico de Valencia 9, Paterna (España) Tlf: Fax: METAGLA Disc Type and Flange Type eite 2/ 3/ Type 73 / 77 / 177 ight glasses for sight ports and sightflow indicators 5 Type 73.W ight glasses with wiper 7/ 9/ 11//13 / Type 7 Type 7 / 17 Type 1/2 Type 13/11 Type 11.W/13.W ight glasses with tongue and groove Joint ight glasses for welding neck flanges DIN / ANI ight glasses for screwed fittings DIN 1 Bolton sight glasses ANI / DIN Bolton sight glasses with wiper METAGLA for Aseptic and anitary Applications /17 / / 2 Type 19.BIO/19.BIO.UL33 Type 901/903 Type 3/3.UL33//5 Type 99.TUC/99.TUC.UL33 Type 99.NBC Bolton sight glasses for sanitary applications ight glasses for sanitary applications ight glasses for aseptic connection DIN 1 ight glasses for VariventInLine fittings ight glasses for NeumoBioControl METACLAMP ight Glasses 27/ 2 Type /.W Metaclamp, sanitary sight glasses 29/ Type.UL01/.UL33 Metaclamp for non Ex Luminaire 31/ 32 Type.UL/.UL03 Metaclamp for non Ex Luminaire 33/3 Type.EL/.UL05 Metaclamp for Ex Luminaire /3/37 Type.NA/99.NA/99.NA.UL33 Metaglas for NAConnect Fitting METAGLA Threaded ight Glasses 3 39 Type 1 Type Metaglas threaded sight glasses hexagon head Metaglas threaded sight glasses round head /1 Type 1.NTP/2.NTP Metaglas threaded sight glasses NPTthread METAGLA 2 Type 275 Glass lined Metaglas sight glasses 3///5 Type 79.IOK/19.CF//Type 99.LG Metaglas elongated sightglasses/ sight glasses for vacuum Type 99.ZIM Pressure cover with integral Metaglas sight glass cover Appendix 7 Metaglas versus thoughened glass Operating and maintenance instructions tress calculations for Metaglas 5 Borosilicate glass

2 METAGLA METAGLA Improved afety, Constructive olutions and implified Fitting with Metal Fused ight Glasses Introduction Conventional sight glasses are sensitive to stress, bending and impact and when subject to mechanical overload they may catastrophically fail without warning. This can cause a relatively minor expense and inconvenience if it happens during installation but a major cost and safety implication if it occurs when plant is fully operational. METAGLA eliminates this mode of sight glass failure, helping to improve safety and avoid the expense and inconvenience of unscheduled plant shut downs. These advantages are due to the unique glass fused to metal fabrication of METAGLA which gives it unmatched strength and integrity. METAGLA is made by melting circular glass inside a metal frame. This results in the fusion of glass and metal. Upon cooling, the glass solidifies and the difference in the linear coefficient of thermal expansion between glass and metal then produces forces that create a uniform compressive stress throughout the glass. This high degree of mechanically induced compressive stress makes METAGLA the strongest and most secure sightglass for sight window or visual flow indicator application. teel ring und glass disc Heat applied, steel ring expands Glass melts and fuses with steel teel contracts on cooling compressing glass pecial Features Reliability against total failure due to the mechanically prestressed glass Unurpassed resistance to prssure, impact and temperature imple, stress free installation resistant to bending, overtightening and impact Reusable Metaglas can be cleaned and reused in the same or other applications, conventional sight glasses cannot Applications pecifications METAGLA can replace conventional glass in many applications including circular flange assemblies for welding into vessels, weld neck & nozzle flanges and sight flow indicators. In addition, Metaglas cover flanges can be mounted onto flat face base flanges, these are available for all international flange connections including ANI & B. Existing installations can therefore be easly retrofitted to improve safety and extend plant life. The unique properties of METAGLA also make it ideal for use with sanitary mounting systems. METACLAMP s are available as sight glass caps for sanitary clamp and Inline systems and sight glasses and Luminaire adaptors for sterile flush mount designs such as the NAConnect system and Triclamp fittings. METAGLA has been subjected to the most rigorous tests by specific testing facilities in the chemical industry and has subsequently been integrated into their works standards. Pressure Equipment Directive 97/23/EG 02/9 module H/H1 (DIN/EN/IO9001) Materials to VdTÜV specifications & DIN/EN standards ight glass fused to metal to DIN 79 AD tandards W0/TRD 0 3A tandard for food processing Tech Data Materials: Duplex stainless steel 1.2 Carbon steel 1.05, Hastelloy and others Operating Temp.: C to +2 C (0 C) Operating Pressure: bar (TÜV) max. 00 bar, depending on material and design

3 METAGLA Type 73 METAGLA ight Glass Discs Circular sight ports to DIN 21 or similar Circular sight ports to DIN 21 crewed sight glasses similar to DIN 1 ight flow indicators Temperature: 0 C to +0 C Pressure: Up to bar (TÜV) Higher pressures possible Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Other materials available Operating temp. C to +0 C C to +2 C 0 C to +0 C 0 C to +0 C Approvals and technical data Pressure Equipment Directive 97/23/EG 02/9, Module H/H1 (DIN/EN/IO 9001 AD tandards W0/TRD 0 TÜV and Factory Mutual Approval ight glass fused to metal conforming to DIN 79 Borosilicate glass to DIN Reliability against total failure the possibility of sudden unexpected rupture is totally excluded High resistance to bending and overtightening offers simple and fast installation with no risk of breakage Extreme resistance to impact, pressure and temperature Reusable in the same or other applications conventional glass is not Wide acceptance in the European & American chemical industries Certificate of Conformity to EN 3.1B or 3.1A Diameter Pressure rating bar bar bar bar bar d1 d

4 METAGLA Type 77 METAGLA ight Glass Discs for ight Flow Indicators (DIN) As a replacement for conventional sight glasses in sight flow indicators Temperature: 0 C to +0 C Pressure: Up to bar (TÜV) Higher pressures possible Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Other materials available Operating temp. C to +0 C C to +2 C 0 C to +0 C 0 C to +0 C Approvals and technical data Pressure Equipment Directive 97/23/EG 02/9, Module H/H1 (DIN/EN/IO 9001 AD 00 tandards W0/TRD 0 TÜV and Factory Mutual Approval ight glass fused to metal conforming to DIN 79 Borosilicate glass to DIN / DIN 79 Reliability against catastrophic failure the possibility of sudden unexpected rupture is totally excluded High resistance to bending and overtightening offers simple and fast installation with no risk of breakage Extreme resistance to impact, pressure and temperature Reusable in the same or other applications conventional glass is not Wide acceptance in the European & American chemical industries Certificate of Conformity to EN 3.1B or 3.1A Nominal bore Diameter Pressure rating bar bar bar bar bar d1 d2 5 () 5 3 (32)

5 METAGLA Type 177 METAGLA ight Glass Discs for ight Flow Indicators (ANI) As replacement for conventional glasses in through sight flow indicators Temperature: 0 C to +0 C Pressure: Up to bar (TÜV) Higher pressures possible Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Other materials available Operating temp. C to +0 C C to +2 C 0 C to +0 C 0 C to +0 C Approvals and technical data Pressure Equipment Directive 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD tandards W0/TRD 0 TÜV and Factory Mutual Approval ight glass fused to metal conforming to DIN 79 Borosilicate glass to DIN Reliability against total failure the possibility of sudden unexpected rupture is totally excluded High resistance to bending and overtightening offers simple and fast installation with no risk of breakage Extreme resistance to impact, pressure and temperature Reusable in the same or other applications conventional glass is not Wide acceptance in the European & American chemical industrieses Certificate of Conformity to EN 3.1B or 3.1A Pressure rating Nominal size 1 psi 0 psi 00 psi ANI Nominal ize ½" ¾" 1" 1½" 2" 3" " " d d2 0 d d2 0 d d

6 METAGLA Type 73.W METAGLA ight Glass Discs with Wiper Wipers may be used to prevent the cristallisation of media onto the glass and to remove dust and dirt. Centrally operated wipers are mounted through the sightglass disc on either DIN 21 (DN 0), DIN 1 (DN 1) or similar sightglasses wiper Wiper blades silicon rubber, PTFE, and others All product contact parts are of stainless steel O rings VITON Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Operating temp. C to +1 C C to +1 C Approvals and technical data Pressure Equipment Directive 97/23/EG 02/9, Module H (DIN/EN/IO 9001 AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 PN to PN, higher pressure ranges possible Max. operating temperature 1 C Ring materials 1.2, 2.2, 2.05, 2. amongst others Gland material 1.39 (Alloy 3) Glass quality: Borosilicate to DIN / DIN 79 ecurity against total failure imple installation Can be combined with sight glass luminaries Long operating life Certificate of Conformity to EN 3.1B or 3.1A Hastelloy C (2.02) Alloy 59 (2.05) Hastelloy C (2.) 0 C to +1 C 0 C to +1 C 0 C to +1 C Diameter Pressure rating bar Pressure rating bar d1 d

7 METAGLA Type 7 METAGLA ight Glass Discs with Tongue and Groove Joint Nozzles to DIN 21 or 2 Weld neck flange DIN 232 to 23 Flanges with tongue / groove based on DIN Ring materials Operating temp. Carbon teel (1.05) C to +0 C Dupl. tainl. teel (1.2) C to +2 C Hastelloy C (2.02) 0 C to +0 C Approvals and technical data Pressure Equipment Directive 97/23/EG 02/9, Module H/H1 (DIN/EN/IO 9001 AD00 tandards W0/TRD 0 TÜV Approval ight glass fused to metal conforming to DIN 79 Borosilicate glass to DIN ecurity against total failure imple, instruction free installation Long operating life Alloy 59 (2.05) Hastelloy C (2.) 0 C to +0 C 0 C to +0 C Certificate of Conformity EN 3.1B or 3.1C (3.1A)* Pressure rating Nominal bore bar bar tongue and groove joint d2 d2 d2 d 3 F , , , ,5

8 METAGLA Type 7 METAGLA ight Glass Discs for Welding Neck Flanges Connection to DIN Circular sight ports to DIN 21 Plus any other assemblies where the glass is of the same dimensions, e.g weld neck flanges with flat or raised face Temperature: 0 C to +0 C Pressure: Up to bar (TÜV) Higher pressures possible Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Other materials available Operating temp. C to +0 C C to +2 C 0 C to +0 C 0 C to +0 C Approvals and technical data Pressure Equipment Directive 97/23/EG 02/9, Module H/H1 (DIN/EN/IO 9001 AD00 tandards W0/TRD 0 TÜV and Factory Mutual Approval ight glass fused to metal conforming to DIN 79 Borosilicate glass to DIN Reliability against total failure the possibility of sudden unexpected rupture is totally excluded High resistance to bending and overtightening offers simple and fast installation with no risk of breakage Extreme resistance to impact, pressure and temperature Reusable in the same or other applications conventional glass is not Wide acceptance in the European & American chemical industries Certificate of Conformity to EN 3.1B or 3.1A Nominal bore Pressure rating bar Pressure rating bar d1 d2 d1 d

9 METAGLA Type 17 METAGLA ight Glass Discs for Welding Neck Flanges Connection to ANI B.5 Circular sight ports similar to DIN 21 Plus any other assemblies where the glass is of the same dimensions, welding neck flanges with flat or raised face Temperature: 0 C to +0 C Pressure: Up to bar (TÜV) Higher pressures possible Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Other materials available Operating temp. C to +0 C C to +2 C 0 C to +0 C 0 C to +0 C Approvals and technical data Pressure Equipment Directive 97/23/EG 02/9, Module H (DIN/EN/IO 9001 AD00 tandards W0/TRD 0 TÜV and Factory Mutual Approval ight glass fused to metal conforming to DIN 79 Borosilicate glass to DIN Reliability against total failure the possibility of sudden unexpected rupture is totally excluded High resistance to bending and overtightening offers simple and fast installation with no risk of breakage Extreme resistance to impact, pressure and temperature Reusable in the same or other applications conventional glass is not Wide acceptance in the European & American chemical industries Certificate of Conformity to EN 3.1B Pressure rating Nominal size 1 psi 0 psi 00 psi 1" 1½" 2" 3" " 5" " " " d d d d d d

10 METAGLA Type 1 METAGLA ight Glasses for crewed Fittings to DIN 1 crewed sightglass fitting to DIN 1 for use in food processing, cosmetic and pharmaceutical applications where a product or process has to be observed or controlled inside stirred vessels, tanks, dryers, columns, centrifuges, mixers, evaporators, etc. Temperature: 0 C to +0 C Pressure: Up to bar (TÜV) (higher pressures on request) Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Alloy 59 (2.05) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C 0 C to +0 C Approvals and technical data Pressure Equipment Directive 97/23/EG 02/9, Module H (DIN/EN/IO 9001 AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Borosilicate glass to DIN / DIN 79 Perfect sealing to atmospheric side Easy, economical installation Long operating life ecurity against total failure Certificate of Conformity EN 3.1B or 3.1C (3.1A) Nominal bore DN d1 d2 d3 h g Pressure rating bar ,

11 METAGLA Type 2 METAGLA for crewed ight Glass Fittings similar to DIN 1 crewed sightglass fitting similar to DIN 1 for use in food processing, cosmetic and pharmaceutical applications where a product or process has to be observed or controlled inside stirred vessels, tanks, dryers, columns, centrifuges, mixers, evaporators, etc. Temperature: 0 C to +0 C Pressure: Up to bar (TÜV) (higher pressures on request) Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Other materials available Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C Approvals and technical data Pressure Equipment Directive 97/23/EG 02/9, Module H/H1 (DIN/EN/IO 9001 AD00 tandards W0/TRD 0 TÜV and Factory Mutual Approval ight glass fused to metal conforming to DIN 79 Borosilicate glass to DIN Reliability against total failure the possibility of sudden unexpected rupture is totally excluded imple assembly Long working life Certificate of Conformity EN 3.1B or 3.1C (3.1A)* Nominal bore DN d1 d2 Pressure rating bar

12 METAGLA Type 13 METAGLA Bolton ight Glasses to ANI B.5 Flat face ANI mating flange Pressure: PN to PN, higher pressures possible Temperature: see table Important Requires parallel flat face mounting flange and full gasket Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Operating temp. C to +0 C C to +2 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN Reliability against total failure. The possibility of unexpected rupture is excluded Long working life mooth easy clean surface Maximum viewing Minimum buildheight Certificate of Conformity to EN 3.1B PN Flange Glass Mounting holes Gasket 1 lbs ize D K D2 n d /sq.in. 1½" 7,0 9,,7 7,0 x 1x 2 2" 2, 1,7 19,1 2,x53x 2 2½" 177, 139,7 0 19,1 177,x3 x 2 3" 190,5 2, 75 19,1 190,5x90x 2 ", 190,5 0 19,1, x3x 2 " 279, 21,3 1, 279,xx 2 " 32,9 29,5 0, 32,9x3x 2 PN Flange Glass Mounting holes Gasket 0 lbs ize D K D2 n d /sq.in. 1½" 5, 1,3 2,3 5,x1x2 2" 5,1 7,0 2 19,0 5,1x53x2 2½" 190,5 9,3 0,3 190,5x3x2 3" 9,5,1 32,3 9,5x7x2 ",0 0,1 3 0,3,0x3x2 11

13 METAGLA Type 11 METAGLA Bolton ight Glasses Connection to DIN 01 Flat face mating flange Approvals TÜVApproval in accordance with the governing standards (for pressure vessels) (PN to PN); with Carbon teel (DIN 1.05) or Duplex tainless teel (DIN 1.2) Important Requires parallel flat face mounting flange and full gasket Directive for pressure equipment 97/23/EG 02/9, Module H/H1 (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN Reliability against total failure. The possibility of unexpected rupture is excluded Long working life mooth easy clean surface Maximum viewing Minimum buildheight Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Operating temp. C to +0 C C to +2 C 0 C to +0 C 0 C to +0 C Certificate of Conformity to EN 3.1B or 3.1A Continued on next side: PN, PN, PN, PN, PN, PN0 PN Flange Glass Mounting holes Gasket NW D K d2 n Thread d 1 0 M 1 x x2 1 1 M 1 x 5 x M 0 x0 x M 190 x 1 x M 2 x 1 x M 2 x 0 x M 2 x 5 x M 3 x 2 x 2

14 METAGLA Type 11 PN Flange Glass Mounting holes Gasket NW D K d2 n Thread d 1 1 M 1xx2 5 1 M 5x5x2 5 5 M 5x5x2 0 0 M 0x1x M 2x1x M 0x1x M 25x195x M 3x0x2 PN Flange Glass Mounting holes Gasket NW D K d2 n Thread d 1 1 M 1xx2 5 1 M 5x5x2 5 5 M 5x5x2 0 0 M 0x1x M 2x1x M 0x1x M 25x195x M 3x0x2 PN Flange Glass Mounting holes Gasket NW D K d2 n Thread d 1 1 M 1xx2 5 1 M 5x5x2 5 5 M 5x5x M 0x1x M 2x5x M2 2 2x1x M2 2 0x0x2 PN Flange Glass Mounting holes Gasket NW D K d2 n Thread d 5 5 M 5x5x M 0x1x M 2x5x M2 2 2x1x M2 2 0x0x2 PN Flange Glass Mounting holes Gasket PN0 Flange NW D K d2 n Thread d M 5xx2 2 1 M 2xx M2 2 0x0x M27 295x1x2 Glass Mounting holes Gasket NW D K d2 n Thread d M2 2 2xx2 2 0 M2 2 2xx M27 2x0x M 33 3x1x2 13

15 METAGLA Type 11.W METAGLA Bolton ight Glasses Connection to DIN 01 with Wiper Flat face mating flange Wiper Contact metal parts stainless steel VA Wiper blade: ilicone rubber or PTFE ORing: Viton Important Requires parallel flat face mounting flange and full gasket Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Operating temp. C to +1 C C to +1 C 0 C to +1 C 0 C to +1 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards PN to PN, higher pressures on request Glass: Borosilicate to DIN Fused Bush: 1.39 (Alloy 3) Reliability against total failure. The possibility of unexpected rupture is excluded Long working life mooth easy clean surface Maximum viewing Minimum buildheight Possibel to combine with Luminaire Certificate of Conformity to EN 3.1B or 3.1A Flange Glass Mounting holes Gasket ize PN D K d2 n Thread d 1 1 M 1xx2 5 1 M 5x5x2 5 5 M 5x5x2 0 0 M 0x1x M 2x1x M 0x1x M 25x195x M 3x0x2

16 METAGLA Type 13.W METAGLA Bolton ight Glasses to ANI B.5 with Wiper Flat face mating flange Wiper Contact metal parts stainless steel VA Wiper blade: ilicone rubber or PTFE ORing: Viton Important Requires parallel flat face mounting flange and full gasket Ring materials Carbon teel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Operating temp. C to +1 C C to +1 C 0 C to +1 C 0 C to +1 C Directive for pressure equipment 97/23/EG 02/9, Module H/H1 (DIN/EN/IO 9001) AD tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards PN to PN, higher pressures possible Glass: Borosilicate to DIN Fused Bush: 1.39 (Alloy 3) Reliability against total failure. The possibility of unexpected rupture is excluded Long working life mooth easy clean surface Maximum viewing Minimum buildheight Possibel to combine with Luminaire Certificate of Conformity to EN 3.1B or 3.1A PN 1 lb/sq.in. Flange Glass Mounting holes Gasket ize D K d 2 n d 1½" 7,0 9,,7 7,0x1x2 2" 2, 1,7 19,1 2,x53x2 2½" 177, 139,7 0 19,1 177,x3x2 3" 190,5 2, 75 19,1 190,5x90x2 ", 190,5 0 19,1,x3x2 " 279, 21,3 1, 279,xx2 " 32,9 29,5 0, 32,9 x 3x 2

17 METAGLA Type 19.BIO METAGLA Bolton ight Glasses for anitary Applications ORing: A 5 A / B.. 0 ee table for dimensions (dxd5) Aseptic and sanitary applications Base flange to DIN 2117 or similar Weldneck with flat face Pressure: 1 to bar Temperature: see table Important Only for use with parllel flat face flange without seal recess. Maximum torque Nm. We therefore recommend the use of Belleville spring washers, 2 pcs. for each connection hole. Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Approvals TÜVApproval in accordance with the governing standards (for pressure vessels) (With Duplex tainless teel (DIN 1.2) Reliability against total failure. The possibility of unexpected rupture is excluded Effortless cleaning for sterile applications Flush glass/metal border on outer side for easy cleaning Maximum viewing area Certificate of Conformity to EN 3.1B or 3.1A NB PN D K d1 d2 d3 Connection holes ORing pring washer ,7x3,53 31,5/,3 x1, ,97x 3,53 31,5/,3x1, ,x 3,53 31,5/,3x1, ,5x 3,53 31,5/,3x1, ,9x 3,53 31,5/,3x1, ,3x 3,53 /, x1, ,x 3,53 /, x1,5

18 METAGLA Type 19.BIO.UL33 METAGLA Bolton ight Glasses for anitary Applications with Luminarie eries EdelEx or UL33 Aseptic and sanitary applications Mating to weld neck flat face flange and weld in base flange DIN 2117 or similar ight glass luminaire, model EdelEx: Electric supply AC/DC V, 2V, 2V, 2V Rating 5W, W, W Ignition protection to EN 0/019/VDE/01/0171, EEx d Explosion group IIC (all explosion classes) ight glass luminaire UL33 (non Ex): Electric supply AC or DC 2V Rating W (without p b switch i.e. continuous operation), W (with p b switch) Filament operational lamp life over 00 hrs Body stainless steel 1.1 or similar Max permissible ambient temp. at luminaire gland 90 C Dust and water spray protection IP to EN 0 529/DIN VDE 0 part 1 Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Alloy 59 (2.05) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Approvals TÜV component approval for use as pressure vessel part to pressure vessel codes (matl. of const 1.2) temperature: see table ecurity against total failure Compact design Easy cleaning verifiable gap uitable for CIP and IP cleaning Certificate of Conformity to EN 3.1B or 3.1A Important Only for use with parllel flat face flange without seal recess. Maximum torque Nm. We therefore recommend the use of Belleville spring washers, 2 pcs. for each connection hole Nominal bore Nominal pressure D K d1 d2 d3 Connection holes ORing pring washer ,7x 3,53 31,5/,3x1, ,97x 3,53 31,5/,3x1, 17

19 METAGLA Type 901 METAGLA ight Glass Discs for anitary Applications ORing: O ring A 5 A/B.. 0 Dimensions dxd5 see table Weld in base flanges similar to DIN 2117 : Pressure: 1 to bar Temperature: see table Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Ring materials Operating temp. Dupl. tainl. teel (1.2) C to +2 C Hastelloy C (2.02) 0 C to +0 C Alloy 59 (2.05) 0 C to +0 C Hastelloy C (2.) 0 C to +0 C ecurity against total failure Gap can be checked Dead zone free, flush wall seal design uitable for CIP and IP cleaning Certificate of Conformity to EN 3.1B or 3.1A Nominal size d1 d2 d3 1 2 ORing, ,9x 3, , ,2x 3, , ,7x 3, , ,7x 5, , ,07x 5, ,5,x 5, ,5,91x 5,3

20 METAGLA Type 903 METAGLA Bolton ight Glasses for anitary Applications ORing: O ring A 5 A/B.. 0 Dimensions dxd see table Weld in base flanges similar to DIN 2117 Pressure: 1 to bar Temperature: see table Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Ring materials Operating temp. Dupl. tainl. teel (1.2) C to +2 C Hastelloy C (2.02) 0 C to +0 C Alloy 59 (2.05) 0 C to +0 C Hastelloy C (2.) 0 C to +0 C ecurity against total failure Gap can be checked Dead zone free, flush wall seal design uitable for CIP and IP cleaning Certificate of Conformity to EN 3.1B or 3.1A Connection Nominal size D d1 d3 d5 K holes 1 2 ORing ,5 79,5 99,5,5 9,5 17,5, ,9x 3,53 72,2 x3,53 91,7x 3,53 113,7x 5,3 139,07x 5,3, x 5,3,91x 5,3 19

21 METAGLA Type 3 METAGLA ight Glass Discs for Aseptic crewed Pipe Connection DIN 1 1 Aseptic screwed pipe connection DIN 1 part 1 : Pressure: bar Temperature: see table Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Alloy 59 (2.05) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 ecurity against total failure Easy cleaning gap can be checked Flush glass/metal joint to atmospheric side uitable for CIP and IP cleaning Maximum visual aperture Certificate of Conformity EN 3.1B Nominal size DN Nominal pressure d d d1 d2 d7 g1 ORing eries A 32 0 eries B 2,,3 0,3 7,1,9 eries C 2'' 2 ½'' 3'' '',9 5,9 5,9,9,9,9,9,9,9 9,9 9,9 9,9 1,9 1,9 1, ,,0 7, 5,3 0,3 71,5 72,9 1,3 97, 0 2,, 9,0 5,9 5, 0,,9, 7, 2, 3,5 91, 9,9,2 1, x 5 x 5,5x 5,5x 5 x 5 52x 5 5,5x 5 2x 5 x 5 73,5x 5 75x 5 3x 5,5x 5 0x 5 2x 5

22 METAGLA Type 3.UL33 METAGLA ight Glass Discs for Aseptic crewed Pipe Connection DIN 1 1 for Mounting Luminaires UL 33 Aseptic screwed pipe connection DIN 1 part 1 Light upply Voltage: 2V AC or DC Output: W (without built in push button) W (with built in push button) Housing: tainless steel DIN 1.1 or similar Power cable: 3m Bulb life: Over 00 hours Dust and waterjet proof to IP & EN0 529/DIN VDE 0 part1 Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Alloy 59 (2.05) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 ecurity against total failure terile Long operating life Easy, instruction free installation uitable for CIP and IP cleaning Certificate of Conformity EN 3.1B Nominal size DN Nominal pressure d d d1 d2 d7 g1 ORing eries A 0 eries B,3 0,3 7,1,9 eries C 2'' 2 ½'' 3'' '',9,9,9,9,9,9 9,9 9,9 9,9 1,9 1,9 1, ,0 7, 5,3 0,3 71,5 72,9 1,3 97, 0 5,9 5, 0,,9, 7, 2, 3,5 91, 9,9,2 1, ,5x 5 x 5 52x 5 5,5x 5 2x 5 x 5 73,5x 5 75x 5 3x 5,5x 5 0x 5 2x 5 21

23 METAGLA Type METAGLA ight Glasses for Aseptic Flanged Pipe Connection DIN 12 terile duty fitting to DIN 1 part 2 form A Version with raised lip for installation on recessed face sterile duty flange form A Certificate of Conformity EN 3.1B or 3.1C (3.1A) Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 ecurity against total failure ight glass and sealing profile correspond to recommendations of EHEDG (European Hygienic Equipment Design Group) and to AME BPE 02 (Bioprocessing Equipment) Long operating life Flush seal against atmospheric side uitable for CIP and IP cleaning Complies with GMP for clean condition, cleaning, sterilisation Nominal size Nominal pressure D d d3 d5 d d13 ORing eries A eries B 2,,3 0,3 7,1,9 1,3 eries C 2'' 2 ½'' 3'' '' ,5,9, 5,3 5,5 2,,7 72,5 7,0 79, 7,5 90,,,5 1,1 131,5, , 5,0 59,9 3,, 71,9 75, 1,,1 9,5 97, 0,9 1,2 1, 1, 1, 7, x Ø9 x Ø9 x Ø9 x Ø9 x Ø9 x Ø9 x Ø9 x Ø9 x Ø11 x Ø11 x Ø11 x Ø11 x Ø11 x Ø11 x Ø11 x Ø11 x Ø x 5,5x 5,5x 5 x 5 52x 5 5,5x 5 2x 5 x 5 73,5x 5 75x 5 3x 5,5x 5 0x 5 2x 5 111x 5 7x 5 2x 5

24 METAGLA Type 5 METAGLA ight Glasses for Aseptic Clamp Pipe Connection DIN 13 terile duty fitting to DIN 1 part 2 form A Version with raised lip for installation on recessed face sterile duty flange form A Certificate of Conformity EN 3.1B or 3.1C (3.1A) Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 ecurity against total failure ight glass and sealing profile correspond to recommendations of EHEDG (European Hygienic Equipment Design Group) and to AME BPE 02 (Bioprocessing Equipment) Long operating life Flush seal against atmospheric side uitable for CIP and IP cleaning Complies with GMP for clean condition, cleaning, sterilisation Nominal size Nominal pressure d d d3 d5 d ORing eries A 32 0 eries B 2,9 33,7 2,,3 0,3 7,1,9 1,3 eries C 2'' 2 ½'' 3'' '' 3'' '',5,5,5,5,5,5 77,5 77,5 77, , 0 0 2,9 2,9 2,,9 3, 3, 1,5 5,05,,95 5,5,3 7, 5, 2,95,5 72, 7, 79, 7, 90,95,05, 1, ,9 3, ,3 3,3 3 3,3 7, 5,3, 5 53, 59,9 3, 52, 71,9 75, 1,,3 9,5 97, 0,9 1 1, 1, x 3,5 2x 3,5 2x 3, 2x 3,5 3x 5 x 5 37x 5,5x 5 x 5,5,5,5x 5 x 5 52x 5 5,5 2x 5 x 5 73,5x 5 75x 5 3x 5,5x 5 0x 5 2x 5 111x 5 23

25 METAGLA Type 99.TUC METAGLA ight Glasses for VARIVENT InLine Fittings VARIVENT InLine flanges VARIVENT InLine housings Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Ring materials Operating temp. Dupl. tainl. teel (1.2) C to +2 C Hastelloy C (2.02) 0 C to +0 C Alloy 59 (2.05) 0 C to +0 C Hastelloy C (2.) 0 C to +0 C Housing free of dead zones, no domes or pools Predetermined distortion of O ring by metal contact faces uitable for CIP and IP treatment ecurity against total failure Long operating life Crevice free seal Certificate of Conformity EN 3.1B Pressure: bar Temperature: see table Process connections d1 d2 d3 1 2 ORing F VARIVENT DN, 1" OD und IO x 3 N VARIVENT 32 IO " IP 19 0 x 3 G VARIVENT DN0 und DN x 2

26 METAGLA Type 99.TUC.UL33 METAGLA ight Glasses with Luminaire for VARIVENT InLine Fittings VARIVENT InLine flanges VARIVENT InLine housings Light upply Voltage 2V AC or DC Output: 5W (without built in push button) W (with built in push button) Housing tainless steel DIN 1.1 or similar Power cable 3m Bulb life: Over 00 hours Dust and waterjet proof to IP & EN0 529/DIN VDE 0 part1 Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Alloy 59 (2.05) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Housing free of dead zones, no domes or pools Predetermined distortion of O ring by metal contact faces uitable for CIP and IP treatment ecurity against total failure Long operating life Certificate of Conformity EN 3.1B Pressure: bar Temperature: see table Process connections d1 d2 d3 1 2 ORing N VARIVENT 32 IO " IP 19 0x 3

27 METAGLA Type 99.NBC METAGLA ight Glasses for BioControl Fittings Neumo BioControl Pressure: bar Temperature: see table Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Ring materials Operating temp. Dupl. tainl. teel (1.2) C to +2 C Hastelloy C (2.02) 0 C to +0 C Defined distortion of Oring by metal contact faces uitable for CIP and IP treatment ecurity against total failure Long operating life Housing free of dead zones, no domes or pools Crevice free seal Certificate of Conformity EN 3.1B (AD00 W2 on request) Nominal size Nominal pressure d1 d2 d3 1 2 ORing, ,5x3,0 90, ,0x3,0 1, ,0x3,0 1 7, ,0x3,0 2

28 METAGLA Type METACLAMP Metaglas anitary Clamp Fitting Approvals and technical data clamp fittings to DIN 32 7 / IO 252 Certificate of Conformity EN 3.1B or 3.1C (3.1A) Pressure Equipment Directive 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD 00 tandards W0/TRD 0 A3 tandard for food processing ight glass fused to metal conforming to DIN 79 Borosilicate glass to DIN Ring materials Operating temp. Dupl. tainl. teel (1.2) C to +2 C Hastelloy C (2.02) 0 C to +0 C Hastelloy C (2.) 0 C to +0 C Extremely compact construction uitable for food processing & other sterile applications (A3tandard) Reliability against total failure the possibility of sudden unexpected rupture is totally excluded Fast & simple installation & maintenance Extreme resistance to impact and temperature Wide acceptance in the European & American food, beverage, pharmaceutical and chemical industries ize ize Nominal DN inch d 1 d2 d3 d pressure (bar) // /32/ ½", ¾" 1", 1½" 2" 2½" 3" 3½" " ½" 5" " " " " 3,5 77, , ,5 233,5 2 27,5 319,3 33, ,5 27,5 3,5 5,5,5 3, ,5,5 17,3 7, 2,1 7, 27, 9,1 32, 7 27

29 METAGLA Type.W METACLAMP for anitary Clamp Fitting, with Wiper clamp fittings to DIN 32 7 / IO 252 Pressure: 1 to bar Temperature: up to 1 C Materials Ring: Duplex stainless steel 1.2, Hastelloy C Glass: Borosilicate to DIN Fused Bush: Alloy 3 (DIN 1.39) Wiper Wiper blade: PTFE or iliconerubber Contact metal parts stainless steel: VA Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Extremely compact construction Reliability against total failure the possibility of sudden unexpected rupture is totally excluded Fast & simple installation & maintenance Long working life Certificate of Conformity to EN 3.1B ize DN ize inch d 1 d2 d3 d Nominal pressure (bar) 3" ,5 3½" " " , ,3 " 217, , 0 233, ,1 " , 0 27, , " 319, ,1 0 33, , 2

30 METAGLA Type.UL01 METACLAMP with Mini UL01 Luminaire Compact sanitary combination of miniature stainless steel Lumiglas UL01 light with the proven Metaclamp sanitary mounting system. Providing up to watts of intense glare free illumination through a Metaglas safety glass lens. Light upply Voltage: 2V AC or DC Output: 5W (without built in push button) W (with built in push button) Housing: tainless steel DIN 1.1 or similar Power cable: 3m Bulb life: Over 00 hours Dust and waterjet proof to IP & EN0 529/DIN VDE 0 part1 Temperature: (With light) up to 90 C Pressure: Up to bar Higher pressure possible anitary Metaclamp Materials Duplex tainless teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Miniature space saving design uitable for food processing (A3tandard) Dust and water jet resistant (IP) even during external washdown Fast & simple installation with no risk of breakage Very high resistance to impact ight glass resistant to catastrophic failure Certificate of Conformity to EN 3.1B (or 3.1A at extra cost) tandard tube OD DN inch d 1 d 3 d Nominal pressure (bar) ½", ¾" 2 // 3 27,5 2 /32/ 1", 1½",5 2 3,5 * *2" 2 5,5 29

31 METAGLA Type.UL33 METACLAMP anitary Metaclamp with Luninaire eries UL33 or BKVLRA Extremely compact unit combining the popular Lumiglas UL33 light with the proven Metaclamp sanitary mounting system. This compact combination can be mounted directly to any vessel or pipeline and provides up to W of intense glare free illumination through a Metaglas safety glass lens. Lights are available with an optional push button momentary on/off switch. Light upply Voltage: 2V AC or DC Output: W (without built in push button) W (with built in push button) Housing: tainless steel DIN 1.1 or similar Power cable: 3m Bulb life: Over 00 hours Dust and waterjet proof to IP & EN0 529/DIN VDE 0 part1 Temperature: (With light) up to C Pressure: Up to bar Higher pressure possible anitary Metaclamp Materials Duplex tainless teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Extremely compact Minimal crevices for sanitary applications uitable for food processing (A3tandard) Dust and water jet resistant (IP) even during external washdown Fast & simple installation with no risk of breakage Very high resistance to impact ight glass resistant to catastrophic failure Certificate of Conformity to EN 3.1B (or 3.1A at extra cost) tandard tube OD DN inch d 1 d 3 d Nominal pressure (bar) /32/ 1", 1½",5 3,5 2" 5,5 2½" 77,5 3,5 3" ,5

32 METAGLA Type.UL METACLAMP anitary Metaclamp with Luminaire eries UL Powerful stainless steel Lumiglas UL light with the proven Metaclamp sanitary mounting system. This compact combination can be mounted directly to any vessel or pipeline and provides up to 0 watts of intense glare free illumination through a Metaglas safety glass lens. Lights are available with an optional push button momentary on/off switch. Light upply Voltage 2V, 1V or 2V, AC or DC Output: W (without built in push button) 0W (with built in push button) Housing tainless steel DIN 1.1 or similar Power cable 3m Bulb life: Over 00 hours Dust and waterjet proof to IP & EN0 529/DIN VDE 0 part1 Temperature: (With light) up to 90 C Pressure: Up to bar Higher pressure possible anitary Metaclamp Materials Duplex tainless teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) tandard tube OD Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Powerful illumination Minimal crevices for sanitary applications uitable for food processing (A3tandard) Dust and water jet resistant (IP) even during external washdown Fast & simple installation with no risk of breakage Wide range of voltages available Very high resistance to impact ight glass resistant to catastrophic failure Certificate of Conformity to EN 3.1B (or 3.1A at extra cost) DN inch d 1 d 3 d Nominal pressure (bar) /32/ 1½",5 2 3,5 13 2" 32 5,5 13 2½" 77,5,5 3" ,5 3½" 97 0 "

33 METAGLA Type.UL03 METACLAMP anitary Metaclamp with Luminaire eriesul03 or BKVLR Extremely compact unit combining the popular Lumiglas UL03 light with the proven Metaclamp sanitary mounting system. This compact combination can be mounted directly to any vessel or pipeline and provides up to W of intense glare free illumination through a Metaglas safety glass lens. Lights are available with an optional push button momentary on/off switch. Light upply Voltage 2V AC or DC Output: W (without built in push button) W (with built in push button) Housing tainless steel DIN 1.1 or similar Power cable 3m Bulb life: Over 00 hours Dust and waterjet proof to IP & EN0 529/DIN VDE 0 part1 Process temperature: up to 2 C Ambient temperature: (with light) up to C Pressure: up to bar Higher pressure possible. anitary Metaclamp Materials Duplex tainless teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Extremely compact High light output uitable for food processing (A3tandard) Dust and water jet resistant (IP) even during external washdown Fast & simple installation with no risk of breakage Very high resistance to impact ight glass resistant to catastrophic failure Certificate of Conformity to EN 3.1B tandard tube OD DN inch d 1 d 3 d Nominal pressure (bar) /32/ 1", 1½",5 2 3,5 2" 3 5,5 2½" 77,5,5 3" 91 3,5 3½" 97 0 "

34 METAGLA Type.EL METACLAMP anitary Metaclamp with Luminaire eries EL Ex Clamp style nozzles ight glass luminaire type EL Ex ATEX stainless steel luminaire Ex II 2G EEx d II C T / T5 / T Electric supply AC or DC upply voltage, 2, 1 or 2V Rating 5, or W depending on luminaire model Ambient temperatures up to 0 C IIC (all explosion groups) Ignition protection EEx d pressure tight encapsulation DIN EN 0 EC type test certification DMT 9 ATEX E 039 X Dust and Waterjet tight IP to EN 0529/DIN VDE 0 part 1 Pressure: 1 to bar Temperature: see table Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Compact construction Aseptic design Powerful illumination ecurity against total failure Long operating life Use in Ex hazardous process areas Approvals A3standard for foodstuffs Certificate of Conformity EN 3.1B Nominal ize Nominal ize DN inch d 1 d 3 d Nominal pressure (bar) /32/ 1", 1½",5 2 3,5 2" 3 5,5 3" 91 3,5 3½" "

35 METAGLA Type.UL05 METACLAMP for anitary Applications with Explosion proof Luminaire Compact unit combining the popular Lumiglas UL05 Ex explosion proof light with the proven Metaclamp sanitary mounting system. This unit safely illuminates pressurised tanks, pipelines, mixers and any other closed vessels and provides up to W of intense glare free illumination through a Metaglas safety glass lens. Light / Protection Class Eex d flame proof enclosure acc. DIN EN 0/VDE 0171 Explosion Group: IIc (all explosion classes) Temperature Class: up to T (depending on wattage) Process temperature: up to 2 C Ambient temperature: (with light) up to 0 C Pressure: up to bar Higher pressure possible. Operating Voltage Without built in transfomer: supply V: halogen lamp 5W or W supply 2V: halogen lamp W With built in transfomer: supply 1V: halogen lamp 5W supply 2V: halogen lamp 5W Housing Corrosion resistant die cast aluminium, GLAL i Mg Bulb life: Over 00 hours Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Compact design Fast & simple installation with no risk of breakage uitable for food processing (A3tandard) ight glass resistant to catastrophic failure Explosion proof for all explosion classes Dust and water jet resistant (IP) even during external washdown anitary Metaclamp Materials Duplex tainless teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Dust and waterjet proof to IP & EN0 529/DIN VDE 0 part1 tandard tube OD DN inch d 1 d 3 d Nominal pressure (bar) /32/ 1", 1½",5 2 3,5 2" 3 5,5 3" 91 3,5 0 "

36 METAGLA Type.NA METACLAMP for Flush Mounted NAConnect Fitting Type.NA Metaclamp is desiged to fit the flushmounted NAConnect system to offer clear process visibility and unmatched safety with easy cleaning and sterilisation. The NAConnect sight glass eliminates the dead leg created by a standard sanitary ferrule connection avoiding air pockets and trapped undissolved material. Operating Conditions Temperature: (With light) up to 90 C Pressure: Up to 7 bar connector NAConnect dimensions and technical data please request data sheet NAC00 Ring materials Dupl. tainl. teel (1.2) Operating temp. C to +2 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 uitable for aseptic pharmaceutical and food applications (3A tandard) Easy validation of connection for sterilisation and cleaning Extremly compact construction imple installation and maintenance Glass resistant to catastrophic failure Long working life Certificate of Conformity to EN 3.1B or 3.1A Hastelloy C (2.02) Hastelloy C (2.) 0 C to +0 C 0 C to +0 C To fit NAConnect size PN d 1 d2 d3 d Dy Di DIN tand. tube OD NACDIN 3,0,0 27,5 7,0 NACDIN (NACOD1½"),5 3,0 3,5 7 5,5 NACDIN (NACOD2"),0 51,0 5,5 7 0,5 (NACOD2½") 77,5 3,5,5 1 0,2 NACDIN (NACOD3") 91,0 7,0 3, ,0 NACDIN,0,9 97,0,9 NACDIN0 (NACOD") 119,0 1, ,

37 METAGLA Type 99.NA METAGLA for NAConnect Fitting Type 99.NA Metaglas is desiged to fit the flushmounted NAConnect system to offer clear process visibility and unmatched safety with easy cleaning and sterilisation. The NAConnect sight glass eliminates the dead leg created by a standard sanitary ferrule connection avoiding air pockets and trapped undissolved material. Temperature: (With light) up to 90 C Pressure: Up to 7 bar Ring materials Dupl. tainl. teel (1.2) Operating temp. C to +2 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 uitable for aseptic pharmaceutical and food applications (3A tandard) Easy validation of connection for sterilisation and cleaning Extremly compact construction imple installation and maintenance Glass resistant to catastrophic failure Long working life Hastelloy C (2.02) Hastelloy C (2.) 0 C to +0 C 0 C to +0 C Certificate of Conformity to EN 3.1B or 3.1A connector NAConnect dimensions and technical data please request data sheet NAC00ection avoiding air pockets and trapped undissolved material. To fit NAConnect size DN ize NAConnect TM PN d 1 d3 d 1 Dy Di DIN Tube OD ½" / ¾" NACOD¾" 7,0 13,2 11,0 DN// NACDIN 7 3,0 27,5 11,0 1"/1½" /32/ NACDIN NACOD1½" 7,5 3, ,5 2" DN NACDIN NACOD2" 7,0 5,5 0,5 2½" NACOD2½" 7 77,5 9, ,2 3" DN NACDIN NACOD3" 7 91,0 5 3, ,0 3½" DN NACDIN ,0 1,9 " DN0 NACDIN0 NACOD" , 3

38 METAGLA Type 99.NA.UL33 METAGLA for NAConnect and Luminaire eries UL33 or BKVLRA anitary combination of the stainless steel Lumiglas UL33 light and Metaglas to fit the flush mount NAConnect system. Providing up to watts of intense glare free illumination through a Metaglas safety glass lens. ight glass luminaire type EL Ex upply Voltage: 2V AC or DC Output: W (without built in push button) W (with built in push button) Housing: tainless steel DIN 1.1 or similar Power cable: 3m Bulb life: Over 00 hours Dust and waterjet proof to IP & EN0 529/DIN VDE 0 part1 Temperature: (With light) up to 90 C Pressure: Up to 7 bar Ring materials Dupl. tainl. teel (1.2) Hastelloy C (2.02) Hastelloy C (2.) Operating temp. C to +2 C 0 C to +0 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Compact uitable for food processing (3A tandard) Dust and water jet resistant (IP) even during external washdown imple & fast installation with no risk of breakage ight glass resistant to catastrophic failure Luminaires available with an optional push button momentary on/off switch Certificate of Conformity to EN 3.1B or 3.1A To fit NAConnect size ize NAConnect TM PN d 1 d3 d 1 Dy Di DIN Tube OD 1"/1½" /32/ NACDIN NACOD1½" 7,5 3, ,5 2" DN NACDIN NACOD2" 7,0 5,5 0,5 2½" NACOD2½" 7 77,5,5 1 0,2 *3" DN NACDIN NACOD3" 7 91,0 3, ,0 37

39 METAGLA Type 1 METAGLA Threaded ight Glasses Hexagon Head Female connection with metric or Whitworth thread Pressure: bar Temperature: max. 1 C Materials Ring material: Carbon teel (1.05), tainless teel (1.2 or 1.523) Glass: Borosilicate to DIN or odalime Dimensions To DIN 352 Type F (ealing with ORing) Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD 00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Very compact High pressure resistance imple assembly Long working life Certificate of Conformity to EN 3.1B d2 (Thread) d2 (Thread) W d 1 d3 l M Thread M x1,5 M x1,5 M 2 x1,5 M 27 x2 M 33 x2 M 2 x2 M x2 M 0 x2 M 7 x2 G Thread G 3 / " G ½" G ¾" G 1" G 1¼" G 1½" G 2" G 2½" ,5,5,5, l 1 3

40 METAGLA Type METAGLA Threaded ight Glasses Round Head Female connection with Metric or Whitworth thread Operating Conditions Pressure: 0 bar Temperature: with borosilicate glass: 2 C with sodalime glass: 1 C Materials Ring material: Carbon teel (1.05), tainless teel (1.2 or 1.523) Glass: Borosilicate to DIN or odalime Dimensions To DIN 352 Type F (ealing with ORing) Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Very compact High pressure resistance imple assembly Long working life Certificate of Conformity to EN 3.1B d1 (Glass Diameter) d2 (Thread) d 3 d l Borosilicate odalime,5,5,5, G Thread G 3 / " G ½" G ¾" G 1" G1¼" G1½" G 2" G2½" M Thread M x1,5 M x1,5 M 2 x1,5 M 27 x 2 M 33 x 2 M 2 x 2 M x 2 M 0 x 2 M 7 x , ,5, ,5 23,5 2,5 2,5,5,5 l

41 METAGLA Type 1.NPT METAGLA Threaded ight Glasses NPTThread Female connection with NPT or NPTF thread Pressure: 0 bar Materials Ring material: Carbon teel (1.05), tainless teel (1.2) Hastelloy Glass: Borosilicate to DIN Ring materials Carbon steel (1.05) Dupl. tainl. teel (1.2) Hastelloy C (2.02) Operating temp. C to +0 C C to +2 C 0 C to +0 C Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD 00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Very compact High pressure resistance imple assembly Long working life Certificate of Conformity to EN 3.1B d2 Thread W d 1 d l l 1 ¼" NPT / " NPT 2 ½" NPT 27 ¾" NPT 3 2 1" NPT ¼" NPT 1 ½" NPT " NPT 37 3" NPT

42 METAGLA Type 2.NPT METAGLA Threaded ight Glasses NPTThread Female connection with NPT or NPTF thread Pressure: 0 bar Temperature: C to +1 C Materials Ring material: Carbon teel 1.05, tainless teel Glass: odalime glass to DIN 902 Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD 00 tandards W0/TRD 0 ight glass fused to metal similar to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Very compact High pressure resistance imple assembly Long working life Certificate of Conformity to EN 3.1B d2 Thread W d 1 d l l 1 ¼" NPT / " NPT 2 7 ½" NPT ¾" NPT " NPT ¼" NPT 23 1 ½" NPT " NPT 37 1

43 METAGLA Type 275 METAGLA Glass Lined Metaglas ight Glasses Glass lined vessels ightglass fittings to DIN 21 Through flow sightglasses to DIN 323, 3237 Temperature: 0 C to 0 C Ring material P 2 GH ( 1.0) EN 022 ight Glass: B2 Enamel DD 09 blue or white Approvals Certificate of Conformity to EN 3.1B or 3.1A TÜVapproval Directive for pressure equipment 97/23/EC Modul H/H1 (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal similar to DIN 79 Materials to VdTÜVspecifications and the DIN/EN designated standard Glass lined Metaglas sight glasses combine the security of failsafe fused glass with the excellent characteristics of a glass surface. of Glass lining: The product will only come into contact with polished glass Highly resistant to corrosive processes Inert surface so cannot adversely affect product purity No catalyst effect and no infection Resists build up of sticky products which gives: Better heat transfer & higher productivity afety Leaktight with very high pressure resistance High safety factor hatterproof with reliability against total failure. The possibility of unexpected rupture is excluded High resistance to bending and overtightening offers simple, fast installation with no risk of breakage Remains leak tight even when glass is damagedty ize Operating pressure 1 / bar Operating pressure 1 / bar DN (mm) DN (Inch) 3" d d d d

44 METAGLA Type 99.LG METAGLA Fused Metal Elongated ight Glasses To replace conventional glass in rectangular and DEnded sightglass assemblies Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 To replace conventional glass in rectangular and DEnded sightglass assemblies Pressure: 1 to bar, higher pressures possible Temperature: 0 C to 0 C, depending on material Ring material Duplex stainless steel (1.2) Hastelloy C (2.02) Hastelloy C (2.) No catastrophic failure Extremely long life & reliability High resistance to impact & pressure imple & safe installation Constructive solution Certificate of Conformity to EN 3.1B (or 3.1A at extra cost) ize Length (mm) Width (mm) Thickness (mm) Circular Glass Windows Diameter Number

45 METAGLA Type 79.IOK METAGLA IOK ight Glasses IOK connections Ultra high vacuum Temperature: see table Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Ring materials Operating temp. Dupl. tainl. teel (1.2) C to +2 C Hastelloy C (2.02) 0 C to +0 C Hastelloy C (2.) 0 C to +0 C Extremely compact construction Easy, instruction free installation ecurity against total failure Long working life uitable for high vacuum and pressure Certificate of Conformity EN 3.1B Nominal size D d1 d2 d ,

46 METAGLA Type 19.CF METAGLA ConFlat ight Glasses ConFlat connections IO 399 Ultra high vacuum Temperature: see table Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 Ring materials Operating temp. Dupl. tainl. teel (1.2) C to +2 C Hastelloy C (2.02) 0 C to +0 C Hastelloy C (2.) 0 C to +0 C Compact construction uitable for high vacuum and pressure ecurity against total failure Easy, instruction free installation Long working life Certificate of Conformity EN 3.1B DN D d1 K d2 n DN CF 3 27,0,3 DN CF 5,7, DN 3 CF ,2, DN 0 CF 2 1,3, DN 0 CF ,0, DN 0 CF ,, 2 5

47 METAGLA Type 99.ZIM Pressure Cover with Integral Metaglas ightglass Cover VM27.01 tandard Construction & Materials Main body product contact: tainless teel 3Ti (1.571) (3L optional) Metaglas top Duplex tainless teel (1.2) and Borosilicate Glass similar to DIN Fittings tainless teel ilicone Gasket (blue) With hinge & handles hotblasted surface finish 323, 3237 Certificate of Conformity to EN 3.1B (or 3.1A at extra cost) Nominal Bore DN (mm) Viewing Area Diameter d2 Maximum Pressure (bar) Directive for pressure equipment 97/23/EG 02/9, Module H (DIN/EN/IO 9001) AD00 tandards W0/TRD 0 ight glass fused to metal conforming to DIN 79 Materials to VdTÜV specifications and the DIN/EN designated standards Glass: Borosilicate to DIN / DIN 79 afety ight glass with extremely high resistance to damage by impact and vibration Approved by TÜV & AME for use up to Bar (depending on nominal size) Complete reliability against total failure of sight glass Long working life Exceptional polished finish up to Ra<0.2µm Options pecial materials Hastelloy (C, C, C27), 1. BN2, 1.539, 1.529, Duplex 1.2 Alternative gasket materials (EPDM, Viton, FEPilicone etc) urface finish: pickled, shotblasted, ground up to Ra 0.2m pring assisted hinge Alternative neck lengths & wall thicknesses wivel/slide openening Optional handle types including stainless steel Maximum Temperature ( C) No. of crews M Overall Height (A) Weight (Kg)

48 METAGLA versus Toughened Glass METAGLA METAGLA versus Toughened Glass The structure of toughened glass is such that any surface damage or stress caused by uneven forces can lead to catastrophic failure. The structure of Metaglas is such that surface damage is limited to local areas and does not affect the overall strength of the glass. Local pitting or cracking may cracking may obscure the view but the glass remains leak tight and secure. Likewise, uneven stresses do not cause Metaglas to fail. Toughened Glass METAGLA urface Damage Residual tress Pressure Impact Damage to the toughened surface can cause unexpected catastrophic failure Residual stress is created when bolting up. Rebolting causes excessive residual stress which can lead to failure Lower resistance to pressure and catastrophic failure on overpressurisation Impact (mechanical shock) causes catastrophic failure and the glass shatters into a multitude of small fragments cratches or any other surface damage do not affect safety or life of Metaglas Repeated rebolting does not affect Metaglas strenght and integrity. Higher pressure ratings for similar disc thickness Metaglas has an extremely high resistance to impact. Very high impact may cause local pitting of the glass but this neither affects the function or its leak tightness BENDING ensitivy Made of Failure Erosion Cleaning Toughened Glass is very sensitive to uneven torquing of sight port bolts The glass surfaces must be entirely flat and smooth (within 0.07 mm) to aviod uneven torquing. Uneven or over torquing results in the glass cracking right through Erosion, particulary right through the glass toughened surface, results in significant weakening which can lead to catastrophic failure Glass must be replaced unless it can be cleaned insitu Extremely high tolerance to uneven torquing. Uneven surfaces do not therefore result in glass damage Metaglas cannot be overtorqued as you are torquing metal on metal. On reaching the limits of uneven torquing cracks will appear but the Metaglas will remain leak tight Metaglas will remain leak tight to a high level of erosion Metaglas lasts indefinitely regardless of how many times you remove, clean and replace it 7

49 METAGLA Operating and Maintenance Instructions Operating and Maintenance Instructions for METAGLA Fused Metal/Glass ight Glasses. Product Description METAGLA Fused metalglass sight glass discs comprise a glass viewing disc fused into a metal ring. During manufacture of the fused sight glasses, the steel ring and the glass disc are brought up to a temperature where the glass melts and fuses with the steel ring. After this there follows a controlled cooling phase. The glass solidifies and is compressed by the steel ring. The cooled sight glass unit is then ground and polished. The mechanical prestressing causes metalglass fused sight glass to take on the properties of a very tough material and offers superior safety against the conventional thermally treated/toughened sight glass. This is why fused metal/glass sight glasses units should always be used in preference to toughened Borosilicate or odalime glass discs in cases of hazardous process conditions. Application Fused Metal/Glass sight glasses are used wherever there is the need to have visual control of a process operation being carried out in a sealed container; e.g. pressure vessels, pipelines, electric switching stations, refrigeration technology, etc. They are suitable for mounting in standard fittings (e.g. to DIN 21 or DIN21), mounting onto flange pads or weld flanges (with or without raised face), for screwing directly into threaded entries and for mounting within Triclamp and NAConnect style assemblies etc. Factors which could lead to damage or destruction of the sight glass are as follows Temperature The minimum operating temperature is determined by the material of the metal ring. If this lower temperature limit is exceeded the metal may become brittle and its tensile strength may be affected resulting in break up of the sight glass unit The maximum operating temperature is determined by the mechanical prestressing of the glass and/or the material of the metal ring. Even if the temperature is exceeded by a small amount, the result will be failure of the sight glass. Pressure The maximum operating pressure is determined by the configuration (dimensions) and the combination of materials of construction of the sight glass. If the pressure is exceeded concentric or net shaped cracks will appear in the surface of the glass on the low pressure side. Further increase will result in enlargement of the cracks, slivers of glass will come away and finally the glass will fail. Temperature hock Avoid rapid heating up or cooling down of the sight glass. With fused metal/glass sight glasses the steel ring is in tension and the glass insert in compression. The stresses in the two materials are not homogeneous. In the glass disc, the stress is concentrated around the peripheral glass/metal joint. If the sight glass is subjected to temperature shock, concentric cracks may appear in this area or even fine slivers of glass may come away. These cracks will not disturb the pressure tightness/sealing properties of the glass, nor will they create a direct safety risk as long as they are no deeper than % of the original glass thickness. The sight glass should however be checked properly and if necessary exchanged. The same applies to chemical corrosion.

50 Operating and Maintenance Instructions METAGLA Chemical Corrosion The chemical resistance of the unit is determined by the two constituent materials, glass and metal. Glass Generally glass has a high resistance to water, salt solutions, acids, and organic substances and is thus superior to most metals and synthetic resins. It is only significantly attacked at raised temperatures by fluorine, strong alkaline and concentrated phosphoric acid solutions. Chemical erosion, however, can take place in the presence of condensate and salt solutions. Corrosion will increase at higher ph values, increased concentration and higher temperatures. The greatest deterioration of the glass will result from alternating exposure to acid and alkali. There is no mutual reaction between glass and non aqueous organic solutions. Reciprocal reaction with glass surfaces can cause turbidity, spots, thin films with interference colouring and grainy or smooth deposits. These effects may remain restricted to the surface but in the extreme can lead to failure or dissolution of the glass. Metal The user should check that the material of the ring has the corrosion resistance to the substances to which it will be exposed. Mechanical Loading Fused metal/glass sight glass units are generally more resistant to distorting loads when incorrectly fitted than conventional sight glass discs. However incorrect installation can affect the function of the unit and even lead to its failure. ight glasses should only be installed by personnel who have been thoroughly versed in: careful handling of sight glasses cleaning of housings, discs, gaskets, and inserts prior to installation i.e. removal of all foreign bodies (e.g. swarf) even tightening of securing bolts During installation there should be no additional stresses imposed nor should the units be exposed to mechanical impact loads. Fused metal/glass sightglasses must be included in all planned maintenance procedures and periodically checked both visually and with ultrasonicwall thickness testing equipment. In the event of a glass being damaged, adequate visual checks should be made until the relevant vessel can conveniently be shut down. This will make for a practical glass exchange routine to suit the process operation. 9

51 METAGLA tress calculations tress Calculations for Metal Fused ight Glass Discs Fused metal sight glass discs are used in many sectors of the chemical and pharmaceutical industries. They provide an alternative to the thermally stressed sight glass discs made to DIN. Thermally stressed discs fail suddenly once a crack appears, whereas the fused metal glasses, when damaged, suffer surface cracks but not total failure. As opposed to thermally stressed sight glass discs, the fused metal glasses are subject to compression stresses resulting from the difference in thermal expansion coefficients of the metal and glass. The difference in operational properties between the thermal and mechanical stressing sight glass discs can be explained by the residual stress which results from the manufacturing process; in the case of the thermally stressed sight glass discs, the heated blank is quenched by air applied to the outer surface which shrinks and simultaneously shocks the still hot and soft core area. During further cooling the surface area is subject to compression stress and the core sector under tensile stress. The resulting equilibrium is illustrated in figure 1 (left hand section, curve b). In the production of metal fused sight glasses, the steel ring and glass are heated up to the necessary melting temperature where the glass flows onto the steel ring. During the cooling of the composite mass, when a point is reached below the so called inversion temperature the glass comes under compression stress due to the different yet suited expansion coefficients of steel and glass; the level of this stress is proportional to the impeded heat expansion. At the same time the steel ring comes under tensile stress. The mechanically stressed sight glass disc comes under a homogeneous compression stress which applies homogeneously across the whole cross section (shown in diagram 1, right hand section curve b where the horizontal lines signify the stressed area). Due to the effect of bending loads on the beginning of a crack in the case of the thermally stressed disc the crack comes under tensile stress whilst in the case of the mechanically stressed disc the crack will be under compressive stress (load stress curve in each case represented by a; load and residual stress resultant curves in each case represented by c, yellow stress area*). That means that in the case of the thermally stressed disc the limiting value Klc for sudden overcritical crack formation is exceeded, inother words, the disc will shatter. In the case of the mechanically stressed disc, the crack formation resulting from the localised exceeding of the breaking strength factor Klc will enter an area limited by the compression stress, with the result that the breaking mechanics load factor Kj becomes smaller again than the breaking strength factor Klc and the crack development is halted. Every effort to extend the crack requires renewed energy supply in form of pressure increase. A sudden bursting of the disc is thus unlikely so long as the compression stress condition is maintained. In the production of fused metal sight glasses, steel ring and glass are heated together to the temperature where the glass liquefies and begins to flow onto the steel ring. This is followed by a relatively quick cooling of the parts which ensures the retention by the ring material of its mechanical strength. The glass is compressed as it solidifies by the steel ring. The cooled sight glass discs are then ground and polished on both faces to produce a clean glass. After the cooling process the geometry of the structural parts is demonstrated in figure 2. The metal surround, because of its greater thermal expansion coefficient, compresses the glass disc not just radially; it is responsible for setting up forces at right angles to the glass surface around the joint area. The result is that around this border area the glass is subjected to compression stress and the metal to tensile stress. The stress condition can be recognised in shape distortion of the visible surface. The change in thickness around the joint area causes a slight convex form which even grinding of the surface will not entirely remove. The new surface created by the manufacturing process inevitably follows the effective forces acting upon it. FEM investigations () into fused metal sight glass discs show that the compressive stress is not unconnected with the radius and spacing coordinates at right angles to the glass surface. Figure 3 shows the typical course of radial stress in the glass surface, indicated as compression stress by the minus sign. From the centre of the glass a relatively large area of constant stress can be recognised. Close to the glass edge i.e. one or two millimetres from the separation area bordering the steel, the stress is shown to be at a distinct minimum. Further toward the steel rim, the compression stress rises at a steep gradient again, and indeed over the value at the centre of the glass.

52 tress calculations METAGLA Figure 1 chematic representation of stress distribution in direction of thickness for thermal (left) and mechanical (right) stressing of a sight glass disc a b c bending stress progression resulting for one sided compression application, residual stress progression created by the manufacturing process, overlap of load stress and residual stress progression tension pressure tension pressure Figure 2 Distorted and undistorted structure Undistored structure Core center teelring Figure 3 Curve of x stress relative to glass centre (on glass surface) 51

53 METAGLA tress calculations Figure Radial tress distribution at the transition of steel ring and glass core Figure 5 Radial tress distribution in glass core (section from fig.) Figure shows the lines of equal radial stress at the transition from glass to steel. Figure 5 is an enlarged section of the stress diagram from fig. From fig 5 it is possible to recognise the concentration of stress near the glass metal joint. These stress peaks are concentrated in a very specific area of the steel glass transition (Fig ). If this zone is subjected to further stress e.g. temperature shock, mechanical loading, it can, in some cases lead to crack formation or even in the glass or even flaking off splinters. These however remain limited to a range of a few millimetres, as the further tendency to cracking is prevented by the adjacent compression stress. The formation of stress cracks can be minimised by fire polishing a concave glass surface tin the critical stress zone. 52

54 tress calculations METAGLA Fig. and Fig. 9 show glasses slightly damaged. No risc for further use. If the surface glass breaks up into larger flakes, as shown in Fig., the sight glass should be exchanged, although even here there is yet no risk to safety. Fig.11 shows a glass which has been attacked by chemical corrosion and has lost more than % of its bulk. Therefor must be exchanged (hight risc) Figure Zones of critical stresses Figure 7 fire polished glass surface Figure Circular (conentric) cracks Fig. Fig. 9 Figure 9 Circular cracks and break away at the edge Figure the surface glass breaks up into larger flakes Fig. Fig. 11 Figure 11 shows a glass which has been attacked by chemical corrosion 53