High LESER worldwide André Ramseyer AG Flamatt, Switzerland info@ramseyer.ch Efficiency Hong Kong LESER Shenzen, China sales@leserchina.com Pilot Operated Safety Valves LESER UK Bristol, United Kingdom sales@leser.co.uk Series 820 Modulate Action US Units LESER Polska Poznan, Poland leser@leser.pl LESER S.A.R.L. Toulouse, France contact@leser.fr LESER LLC Charlotte (NC), USA salesus@leser.com PROTEGO LESER do BRAZIL Rio de Janeiro, Brazil protegoleser@protegoleser.com.br LESER Office Middle East Bahrain gopal.n@leser.com LESER LLP Singapore sales@leser.com.sg Fainger LESER Valves Mumbai, India info@fainger.com Facts Pilotgesteuertes Sicherheitsventil Ausgabe 0.200 / 000 LWN 48.-D / 0.666 The-Safety-Valve.com LESER GmbH & Co. KG 20 Hamburg, Wendenstr. - 2006 Hamburg, P.O. Box 26 6 Fon +4 (40) 2 6-00 Fax +4 (40) 2 6-00 E-Mail: sales@leser.com www.leser.com The-Safety-Valve.com D
Materials Series 80, 820 Main Valve Below is a schematic drawing of the parts layout for the LESER POSV main valve including both the Standard and Extra Orifice designs. For the related parts listing, see opposite page. Stud 6 Nut Top plate 60 O-ring, inner top plate seal 6 O-ring, outer top plate seal Dome spring 8 Piston guide 6 Piston, complete 6.2 Piston top 6. Guide ring 6. O-ring, piston 6.4 Backup ring 6. Piston body 6. Guide ring 6.6 Allen head screw 8 Screw O-ring disc, complete. O-ring disc.2 Disc retainer.4 Nut Nozzle 4 Fitting 62 Backup ring 6 O-ring, pitot tube 6 O-ring, seat seal Tube 2 Pitot tube Body 0/2 LWN 48.-E
Materials Series 80, 820 Main Valve Materials Item Component Type 82 22 Type 84 24 Type 8 2 Body 2 Pitot tube Tube 4 Fitting Nozzle 6 Piston, complete 6. Piston body 6.2 Piston top 6.4 Backup ring 6. Guide ring 6.6 Allen head screw O-ring disc, complete. O-ring disc.2 Disc retainer.4 Nut 8 Piston guide Top plate Stud 6 Nut 8 Screw Dome spring 62 Backup ring Option code.06.4408 SA 26 WCB SA CF8M SA 2 LCB PTFE PTFE PTFE PTFE PTFE PTFE PTFE with carbon PTFE with carbon PTFE with carbon PTFE with carbon PTFE with carbon PTFE with carbon A4-0 A4-0 A4-0 Stainless steel Stainless steel Stainless steel A4-0 A4-0 A4-0 Stainless steel Stainless steel Stainless steel.0460.4404.406 SA 0 6L SA0.22.440.22 BM B8M BM.22.440.22 2H 8M 2HM A4-0 A4-0 A4-0 Stainless steel Stainless steel Stainless steel.40.40.40 Stainless steel Stainless steel Stainless steel PTFE PTFE PTFE PTFE PTFE PTFE 6., 6.4,., 60, 6, 6, 6 O-ring ) R0 Buna-EP (EPDM Ethylene-Propylene-Dine) * Viton (FKM Fluorocarbon) R06 Kalrez (FFKM Perfluo) Please notice: Modifications reserved by LESER. LESER can upgrade materials without notice. Every part can be replaced by other material acc. to customer specification. ) For further soft seal materials refer to page 02/ LWN 48.-E 0/22
Materials Series 820 Modulate Action Pilot Valve Below is a schematic drawing of the parts layout for the LESER Series 820 Modulate Action pilot valve. For the related parts listing, see opposite page. 40 Cap 2 Spindle 8 Adjusting screw Lock nut Bug screen 64 Spacer Ring 6 Piston guide Diaphragm washer 8 6 Bearing 6 Spring plate (upper) Spring Bonnet 4 Spring Guide 2 4 Piston (upper) / Spherical dome O-ring, piston seal 2 Lock screw Disc, feeding (upper) O-ring, piston seal 0 Seat, feeding Disc, feeding (lower) 8 O-ring, piston seal 4 O-ring, piston seal 0 Disc, exhaust (lower) O-ring, piston seal Body Disc, extension 4 Coupling 4 Spring plate (lower) 4 Piston 80 Guide ring 0 Nut Diaphragm washer 2 Diaphragm O-ring 4 O-ring 46 O-ring 42 Return spring O-ring, piston seal 20 Plug 44 Parallel pin 0/2 LWN 48.-E
Materials Series 820 Modulate Action Pilot Valve Materials Item Component Piston Diaphragm Materials Item Component Piston Diaphragm Body 2 Guide Seat, feeding Disc, feeding (upper) 8 Disc, feeding (lower) Bonnet Disc, exhaust (lower) 2 Spindle 6 Spring plate (upper) Spring plate (lower) 8 Adjusting screw Lock nut 20 Plug 40 Cap 4 Piston 42 Return spring 4 Coupling SA 4 6L SA 4 6L SA 4 6L SA 4 6L.422.422 Hardened stainless steel Hardened stainless steel.422.422 Hardened stainless steel Hardened stainless steel 2.466 2.466 INCONEL X0 INCONEL X0 44 Parallel pin 4 Disc, extension Piston (upper) 4 Spherical dome 4 Spring 64 Bug screen 6 Bearing 0 Nut Diaphragm washer 2 Diaphragm Spacer 6 Ring Lock screw 8 Diaphragm washer 80 Guide ring 8 Backup ring 82 Backup ring Stainless steel Stainless steel Stainless steel Stainless steel.4404 6L.4404 6L.40.40 Stainless steel Stainless steel Plastic Plastic Plastic Plastic.440 Stainless steel.4404 6L FKM.4404 6L.4404 6L.440 Stainless steel.4404 6L.4404 6L PTFE PTFE Materials Item 0,, 2, 4,, 46,, 4 Component Option code Viton * (FKM Fluorocarbon) O-ring ) R0 Buna-EP (EPDM Ethylene-Propylene-Dine) R06 Kalrez (FFKM Perfluo) Please notice: Modifications reserved by LESER. LESER can upgrade materials without notice. Every part can be replaced by other material acc. to customer specification. ) For further soft seal materials refer to page 02/ LWN 48.-E 0/26
Materials Series 80, 820 Manifold block Below is a schematic drawing of the parts layout for the Manifold block. For the related parts listing, see opposite page. 24.8 Gasket 24. Lock screw 24. Manifold block Bushing 24.2 O-ring 24. O-ring (Exhaust Series 820) 24.6 24.6 O-ring 24.4 O-ring (Outlet) 24. Piston 24.4 O-ring (Outlet) 24. Lock screw 24.8 Gasket 0/2 LWN 48.-E
Materials Series 80, 820 Manifold block Materials Item Component Standard 24. Manifold block 24.2 Bushing 24. Piston 24. Lock screw 24.8 Gasket 24.4, 24., 24.6 Option code.4404 6L.4404 6L.4404 6L.40 Stainless steel.40 Stainless steel O-ring ) R0 Buna-EP (EPDM Ethylene-Propylene-Dine) * Viton (FKM Fluorocarbon) R06 Kalrez (FFKM Perfluo) Please notice: Modifications reserved by LESER. LESER can upgrade materials without notice. Every part can be replaced by other material acc. to customer specification. ) For further soft seal materials refer to page 02/ LWN 48.-E 0/28
Reference: Identifying the Flange Pressure Rating (ASME) The following selection charts help you identify the flange pressure rating of your LESER safety valve based on the operating pressure and operating temperature of your plant depending on the required body material. The flange pressure rating is shown inside the colorcoded fields of each chart. For the numerical selection tables see opposite page. Body material: WCB p [bar] 0 2 0 00 2 200 6 T [ F ] 2-4 0 60 2-0 -4 0 00 000 00 2000 T [ C ] Inlet flange rating class: 0 00 600 p [psig] Body material: CF8M p [bar] 0 2 0 00 2 200 6 T [ F ] 2 0 60 T [ C ] -4 2-0 0 00 000 00 2000-4 Inlet flange rating class: 0 00 600 p [psig] Body material: LCB p [bar] 0 2 0 00 2 200 6 T [ F ] 2 0 60 T [ C ] -4 2-0 0 00 000 00 2000-4 Inlet flange rating class: 0 00 600 p [psig] 02/0 LWN 48.-E
4 Reference: Identifying the Valve Code, Series 820, Orifice D K+ In the selection charts below you identify the article number based on your flange pressure rating ( flange class ), connection size ( valve size ) and orifice. If you specified the Extra Orifice (or Full bore orifice) for your nozzle design, refer to row Extra Orifice, otherwise use row API Standard Orifice acc. to API 26. Series 820 Modulate Action, API Standard Orifice and Extra Orifice All Connection Sizes, Orifice D K+, by Flange Pressure Rating DN I+O 2 x 0 40 x 0 40 x 80 0 x 80 Valve size " x 2" " x 2" " x " 2" x " API Standard Orifice acc. to API 26 D E F D E F G H G H J Extra Orifice G H J K+ Body material: WCB.06 Flange class Art.-No. 0 x 0 822. 000 0020 000 820 0040 000 0060 80 000 0080 840 000 000 00 80 00 x 0 822. 0220 020 0240 00 020 0260 020 0 0280 020 20 000 00 020 0 600 x 0 822. 0640 060 0660 2060 060 0680 060 200 000 00 2080 020 00 040 200 Body material: CF8M.4408 Flange class Art.-No. 0 x 0 824. 000 0020 000 820 0040 000 0060 80 000 0080 840 000 000 00 80 00 x 0 824. 0220 020 0240 00 020 0260 020 0 0280 020 20 000 00 020 0 600 x 0 824. 0640 060 0660 2060 060 0680 060 200 000 00 2080 020 00 040 200 Body material: LCB Flange class Art.-No. 0 x 0 82. 000 0020 000 820 0040 000 0060 80 000 0080 840 000 000 00 80 00 x 0 82. 0220 020 0240 00 020 0260 020 0 0280 020 20 000 00 020 0 600 x 0 82. 0640 060 0660 2060 060 0680 060 200 000 00 2080 020 00 040 200 02/0 LWN 48.-E
4 Reference: Identifying the Valve Code, Series 820, Orifice J T+ In the selection charts below you identify the article number based on your flange pressure rating ( flange class ), connection size ( valve size ) and orifice. If you specified the Extra Orifice (or Full bore orifice) for your nozzle design, refer to row Extra Orifice, otherwise use row API Standard Orifice acc. to API 26. Series 820 Modulate Action, API Standard Orifice and Extra Orifice All Connection Sizes, Orifice J T+, by Flange Pressure Rating DN I+O 80 x 00 00 x 0 0 x 200 200 x 20 Valve size " x 4" 4" x 6" 6" x 8" 8" x 0" API Standard Orifice acc. to API 26 J K L L M N P Q R T Extra Orifice N+ P+ R+ T+ Body material: WCB.06 Flange class Art.-No. 0 x 0 822. 020 00 040 860 00 060 00 080 80 00 0200 880 020 80 00 x 0 822. 00 040 00 40 060 00 080 00 0 0400 040 60 0420 0 600 x 0 822. 00 060 00 200 080 00 0800 080 20 0820 080 220 0840 20 Body material: CF8M.4408 Flange class Art.-No. 0 x 0 824. 020 00 040 860 00 060 00 080 80 00 0200 880 020 80 00 x 0 824. 00 040 00 40 060 00 080 00 0 0400 040 60 0420 0 600 x 0 824. 00 060 00 200 080 00 0800 080 20 0820 080 220 0840 20 Body material: LCB Flange class Art.-No. 0 x 0 82. 020 00 040 860 00 060 00 080 80 00 0200 880 020 80 00 x 0 82. 00 040 00 40 060 00 080 00 0 0400 040 60 0420 0 600 x 0 82. 00 060 00 200 080 00 0800 080 20 0820 080 220 0840 20 LWN 48.-E 02/08
Reference: Available Accessories Specify one or more of the following option codes to order the required accessories for your LESER POSV. Field test connection R26 Backflow preventer (Standard) Pilot supply filter R0 Manual blowdown R2 to atmosphere R24 into main valve outlet Set pressure testing with external test medium Prevents return flow of the medium from the discharge into the system to be secured Filter to prevent plugging of the pilot Functional test of main valve piston NACE sour gas application R0 MR0/ISO 6 MR00 Remote Sensing R28 Soft sealing POSV complete O-ring disc, Piston guide, Seat, Tubing, Cover R0: EPDM R06: FFKM R04: FKM (Standard = * ) Main valve disc R metal sealing Actual operating pressure sensed to pilot. No influence of inlet pressure losses, stable function of POSV Drain hole J: G R48: NPT " Pilot lifting device R2 Pilot test gag R Blowdown adjusted to fixed value (for type 8 only) R44 Mechanical lifting of pilot for verification of POSV operation Blocking of operation in case of required hydrostatic testing of vessel Blowdown adjusted: Closing pressure difference as a fixed value between 2 %. Standard adjustment between % LWN 48.-E 02/4
Dimensions and Weights Series 80 and 820 US Units Orifice D K+ DN I+O 2 x 0 40 x 0 40 x 80 0 x 80 Valve size " x 2" " x 2" " x " 2" x " API Standard orifice acc. to API 26 D E F D E F G H G H J Extra Orifice G H J K+ d 0 [inch] 0.4 0. 0.24 0.06 0.4 0. 0.24.42 0.2..406 0.2..46.80 A 0 [inch 2 ] 0.4 0.264 0.42 0.64 0.4 0.264 0.42.02 0.6.02.2 0.6.02.8 2.806 Flange class 0 x 0 a 4 4 4 4 4 4 4 4 b 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 H Series 80 4 4 4 4 4 4 4 4 4 4 4 6 6 6 6 H Series 820 8 8 8 8 20 6 20 6 20 6 20 6 S 2 2 2 2 S 2 0 0 0 0 0 0 0 0 A 6 6 6 6 6 6 6 B C D 4 4 4 8 4 8 4 8 4 8 4 E 2 2 2 2 2 2 2 2 m 4.6 4.6 4.6 4.6.... 68. 68. 68. 8.6 8.6 8.6 8.6 Flange class 00 x 0 a 4 4 4 4 4 4 4 4 b 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Flange class 600 x 0 H Series 80 4 4 4 4 4 4 4 4 4 4 4 6 6 6 6 H Series 820 8 2 8 2 8 2 8 2 20 6 20 6 20 6 20 6 S S 2 0 0 0 0 0 0 0 0 A 6 6 6 6 6 6 6 B C D 4 4 4 8 4 8 4 8 4 8 4 E 2 2 2 2 2 2 2 2 m 4.6 4.6 4.6 4.6.... 68. 68. 68. 8.6 8.6 8.6 8.6 a 4 4 4 4 4 4 4 4 b 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 H Series 80 4 4 4 4 4 4 4 4 4 4 4 6 6 6 6 H Series 820 8 2 8 2 8 2 8 2 20 6 20 6 20 6 20 6 S S 2 0 0 0 0 0 0 0 0 A 6 6 6 6 6 6 6 B C D 4 4 4 8 4 8 4 8 4 8 4 E 2 2 2 2 2 2 2 2 m 4.6 4.6 4.6 4.6.... 68. 68. 68. 8.6 8.6 8.6 8.6 d 0 = Actual discharge diameter [inch] A 0 = Actual discharge area [inch 2 ] a = Center to face [inch] b = Center to face [inch] H = Heights [inch] S = Inlet flange thicknes [inch] S 2 = Outlet flange thickness [inch] A = Bracket [inch] B = Bracket [inch] C = Hole diameter [inch] D = Total width [inch] E = Total length [inch] m = Weight [lb] 0/0 LWN 48.-E
Dimensions and Weights Series 80 and 820 US Units Orifice J T+ DN I+O 80 x 00 00 x 0 0 x 200 200 x 20 Valve size " x 4" 4" x 6" 6" x 8" 8" x 0" API Standard orifice acc. to API 26 J K L L M N P Q R T Extra Orifice N+ P+ R+ T+ d 0 [inch 2 ].46.2 2.20 2. 2.20 2.480 2..268.40 4..26. 6.64.08 A 0 [inch 2 ].8 2.46.88 6.848.88 4.82.6 8.86 0.8 4.0 2.4 24.4 4..44 Flange class 0 x 0 a 6 6 6 6 0 0 b 6 6 6 6 8 8 8 8 8 H Series 80 6 2 6 2 6 2 6 2 8 8 8 8 8 22 2 22 2 22 2 26 2 26 2 H Series 820 2 4 2 4 2 4 2 4 2 2 2 2 2 2 2 2 S 2 2 2 2 2 2 2 2 S 2 2 2 2 2 2 2 2 6 6 A 8 2 8 2 8 2 8 2 2 2 2 4 4 B 4 4 4 4 4 4 4 4 4 6 6 6 6 6 C 2 2 2 2 2 2 2 2 2 2 2 2 2 2 D 0 6 0 6 0 6 0 6 2 2 2 2 2 6 0 6 0 E 4 4 4 4 20 2 20 2 20 2 22 22 m 0. 0. 0. 0. 6.2 6.2 6.2 6.2 6.2 42. 42. 42..8.8 Flange class 00 x 0 a 6 6 6 6 0 0 b 6 6 6 6 8 8 8 8 8 Flange class 600 x 0 H Series 80 6 2 6 2 6 2 6 2 8 8 8 8 8 22 2 22 2 22 2 26 26 H Series 820 2 4 2 4 2 4 2 4 2 2 2 2 2 2 2 2 4 4 S 2 2 2 2 2 2 2 2 S 2 2 2 2 2 2 2 2 6 6 A 8 2 8 2 8 2 8 2 2 2 2 4 4 B 4 4 4 4 4 4 4 4 4 6 6 6 6 6 C 2 2 2 2 2 2 2 2 2 2 2 2 2 2 D 0 6 0 6 0 6 0 6 2 2 2 2 2 6 0 6 0 E 4 4 4 4 20 2 20 2 20 2 22 22 m 0. 0. 0. 0. 6.2 6.2 6.2 6.2 6.2 42. 42. 42..8.8 a 6 6 6 6 b 6 6 6 6 8 8 8 8 8 H Series 80 8 8 8 8 8 2 2 2 2 2 2 2 2 H Series 820 22 22 22 22 2 2 2 2 2 28 28 28 2 2 2 2 S 0 0 0 0 2 2 2 2 0 2 0 S 2 2 2 2 2 2 2 2 6 6 A 8 2 8 2 8 2 8 2 2 2 2 4 4 B 4 4 4 4 4 4 4 4 4 6 6 6 6 6 C 2 2 2 2 2 2 2 2 2 2 2 2 2 2 D 0 6 0 6 0 6 0 6 2 2 2 2 2 6 0 6 0 E 4 4 4 4 20 2 20 2 20 2 22 22 m 0. 0. 0. 0. 6.2 6.2 6.2 6.2 6.2 42. 42. 42..8.8 S 2 A D H C a B b E S LWN 48.-E 0/04
Screw Dimensions acc. to ASME B6. The flange thickness of the inlet and outlet flanges of the Pilot Operated Safety Valve (POSV) may differ from the standard. Therefore stud-bolts for the flange connections may also be longer than stated in ASME B6.. To simplify the calculation of the correct bolt length, the quantity and sizes of the stud-bolts and nuts for the inlet and outlet flange connections are given below. The listed screw ensions are rounded to standard ensions. The connection flanges are based on the ASME B6. standard. DN I+O 2 x 0 40 x 0 40 x 80 0 x 80 Size " x 2" " x 2" " x " 2" x " API Standard orifice acc. to API 26 D E F D E F G H G H J Extra Orifice G H J K+ d 0 [inch] 0.4 0. 0.24 0.06 0.4 0. 0.24.42 0.2..406 0.2..46.80 A 0 [inch 2 ] 0.4 0.264 0.42 0.64 0.4 0.264 0.42.02 0.6.02.2 0.6.02.8 2.806 Flange class 0 x 0 Stud bolts 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Nuts 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 Stud bolt diameter nut size [inch] Raised face flange type [inch] 4 4 4 4 Ring type joint flange [inch] 4 4 4 4 Stud bolts 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Nuts 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 size [inch] Raised face flange type [inch] 4 4 4 4 4 4 4 Ring type joint flange [inch] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Flange class 00 x 0 Stud bolts 4 4 4 4 4 4 4 4 4 4 4 8 8 8 8 Nuts 8 8 8 8 8 8 8 8 8 8 8 6 6 6 6 size [inch] Inlet Outlet Inlet US Units Orifice D K+ Raised face flange type [inch] 4 4 4 4 4 4 4 4 4 4 4 Ring joint flange [inch] 4 4 4 4 4 4 4 4 4 4 4 Stud bolts 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Nuts 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 size [inch] Raised face flange type [inch] 4 4 4 4 4 4 4 Ring type joint flange [inch] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Flange class 600 x 0 Stud bolts 4 4 4 4 4 4 4 4 4 4 4 8 8 8 8 Nuts 8 8 8 8 8 8 8 8 8 8 8 6 6 6 6 size [inch] Outlet Inlet Outlet Raised face flange type [inch] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Ring type joint flange [inch] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Stud bolts 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Nuts 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 size [inch] Raised face flange type [inch] 4 4 4 4 4 4 4 Ring type joint flange [inch] 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Outlet 0/0 S Inlet LWN 48.-E
Screw Dimensions acc. to ASME B6. US Units Orifice J T+ DN I+O 80 x 00 00 x 0 0 x 200 200 x 20 Size " x 4" 4" x 6" 6" x 8" 8" x 0" API Standard orifice acc. to API 26 J K L L M N P Q R T Extra Orifice N+ P+ R+ T+ d 0 [inch].46.2 2.20 2. 2.20 2.480 2..268.40 4..26. 6.64.08 A 0 [inch 2 ].8 2.46.88 6.848.88 4.82.6 8.86 0.8 4.0 2.4 24.4 4..44 Flange class 0 x 0 Stud bolts 4 4 4 4 8 8 8 8 8 8 8 8 8 8 Nuts 8 8 8 8 6 6 6 6 6 6 6 6 6 6 Stud bolt diameter nut size [inch] Raised face flange type [inch] 4 4 4 4 4 4 4 4 4 6 6 Ring type joint flange [inch] 4 4 4 4 6 6 Stud bolts 8 8 8 8 8 8 8 8 8 8 8 8 2 2 Nuts 6 6 6 6 6 6 6 6 6 6 6 6 24 24 size [inch] Raised face flange type [inch] 4 4 4 4 4 4 4 4 4 Ring type joint flange [inch] 4 4 4 4 4 4 4 4 4 Flange class 00 x 0 Stud bolts 8 8 8 8 8 8 8 8 8 2 2 2 2 2 Nuts 6 6 6 6 6 6 6 6 6 24 24 24 24 24 size [inch] Raised face flange type [inch] 6 6 6 Ring type joint flange [inch] 6 6 6 Stud bolts 8 8 8 8 8 8 8 8 8 8 8 8 2 2 Nuts 6 6 6 6 6 6 6 6 6 6 6 6 24 24 size [inch] Raised face flange type [inch] 4 4 4 4 4 4 4 4 4 Ring type joint flange [inch] 4 4 4 4 4 4 4 4 4 Flange class 600 x 0 Stud bolts 8 8 8 8 8 8 8 8 8 8 8 8 2 2 Nuts 6 6 6 6 6 6 6 6 6 24 24 24 24 24 size [inch] Inlet Outlet Inlet Outlet Inlet Outlet Raised face flange type [inch] 6 6 6 6 6 8 8 Ring type joint flange [inch] 6 6 6 6 6 8 8 Stud bolts 8 8 8 8 8 8 8 8 8 8 8 8 2 2 Nuts 6 6 6 6 6 6 6 6 6 6 6 6 24 24 size [inch] Raised face flange type [inch] 4 4 4 4 4 4 4 4 4 Ring type joint flange [inch] 4 4 4 4 4 4 4 4 4 LWN 48.-E 0/08