Knife gate valve SLF. Data is only for informational purpose. All specifications are subject to change without notice issue 3

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1 Knife gate valve SLF Data is only for informational purpose. All specifications are subject to change without notice. V R issue 3

2 Knife gate valve SLF Stafsjö s knife gate valve SLF is a flanged full bore valve with a unique seat design that makes it particularly suitable for the most demanding services with slurry and other abrasive media. The SLV gives a tight shut-off independent of pressure direction. The SLF has an epoxy coated fully flanged valve body in nodular iron with integrated purge ports. The valve has seats with integrated flange sealings, saving the need for gaskets, which are flexible in the axial way. This means that they seals towards each other in the bore when the valve is in opened position, thus protecting internal parts and the gate from the abrasive media. Upon closure, the seats are displaced axially, forming a seal with the gate until it forms a complete closure of the bore and gives a bi-directional tight shutoff. The gate is always supplied in hard chromed stainless steel for increased wear resistance and extended service life. The gland box, with three layers of our TwinPack TM and a box bottom scraper, gives the gate guidance during operation and makes sure that a first-rate sealing is preserved. The SLF has a solid top works that gives excellent stability during operation. For security reason it is always supplied ready to be locked in either opened or closed position. In our standard collection of actuators and accessories there are several types to choose from all easily exchangeable between each other. The SLV can also be supplied with a bottom cover to prevent media from discharging below valve. If bottom cover is used then standard purge ports must be utilized to prevent material build up in lower body. The SLF valve is designed, manufactured, inspected and tested according to the European Pressure Equipment Directive (PED 97/ 23/EC) category I and II module A1. The valve is CE marked when it is applicable. Other slurry valves besides the SLF, is the SLV available up to DN 800 as standard and the high pressure versions, SLH and SLX, for pressures up to 50 bar. Optimal valve design for the most demanding slurry Maximum flow capacity and minimal wear on the equipment is achieved with full bore and the unique seat design with minimal cavity. In opened position the seats form tight extension of the pipe line and only the seats are exposed to the media no metal parts. Design for maximized service life The bevel edge on the gate, the machined gate support in the valve body and the suspension of the seats minimizes wear on the seats during operation, thus maximizing the valves service life. Reinforcement rings embedded in seats ensure position, shape and strength during valve operation and the extended faceto-face reduces the stress. Fully flanged and modular design lowers the life cycle cost Installation and maintenance can be carried through very smoothly and cost-efficient direct on the site, partly due to the fully flanged valve body and partly for the modular design that gives flexibility in regards of parts, materials, actuator types and accessories issue 3

3 Design data Sizes Flange drilling Face-to-face dimension ATEX design DN 80 - DN 400 EN 1092 PN 10 ASME/ANSI B16.5 Class 150 AS 2129 Table D AS 2129 Table E Other sizes on request Stafsjö manufacturing standard ATEX 94/ 9/EC II cat 3 G/D for zone 2 and 22 on request Leakage rate Pressure tests EN :2012 rate A: No visually detectable leakage is allowed for duration of the test. Pressure shell test: 1,5 times maximum allowable working pressure for open valve. Pressure tests are performed with water at 20º C according to EN :2012. Pressure seat tightness test: 1,1 times maximum allowable differential pressure for closed valve. Maximum working pressure body at 20 C Maximum differential pressure at 20 C DN bar DN bar Basic equipment A. Valve Body Material Code Type Maximum temperature C Nodular iron (L) EN-JS1020/GGG Standard colour: epoxy, thickness μm, RAL B. Gate Material standard Type Surface treatment Stainless steel EN /AISI 304/SS 2333 Hard chromed surface Material options: Lean duplex stainless steel EN /S32101/LDX 2101 Hard chromed surface Stainless steel EN /AISI 316L/SS 2348 Hard chromed surface Duplex stainless steel EN /AISI 2205/SS 2377 Hard chromed surface C. Seats Material Code Maximum temperature C EPDM (E) 120 Natural rubber (NR) 80 Viton (V) 180 D. Box packing Material Code Maximum temperature C TwinPack TM (TY) 260 Actuators Manual Code Automatic Code Hand wheel 1) (HWr) Pneumatic cylinder (EC) Bevel gear 2) (BG) Electric motor 2) (EM) Hydraulic cylinder 2) (MH) 1) Available with rising and non-rising stem. For recommended size, see page 5 column E 2) For recommended size, see separate data sheet issue 3

4 Double-acting pneumatic cylinder Electric motor (AUMA multi-turn) DN valve Size EC Maximum force (kn) DN valve AUMA type Attachment EC 160 9,0 80 SA 07.2 F10/A EC , SA 07.6 F10/A EC , SA 10.2 F10/A 400 EC ,2 400 SA 14.2 F14/A The table above gives recommended cylinder sizes at normal operation with 5 bar air pressure. For other operating conditions, please contact Stafsjö or your local representative for advice. Electric motors are mounted according to standard ISO The table above gives recommended motor sizes at normal operation. For other operating conditions, please contact Stafsjö or your local representative for advice. The actuators are described in detail in separate data sheets. For actuators classified according to ATEX, please contact Stafsjö or your local representative. Accessories Knife gate valve Accessories Code Model Design Mechanical limit switch (MLS) Omron D4V V AC/ V DC, IP 65 Inductive limit switch (ILS) ifm electronic IG wire, V AC/DC, IP 67 ifm electronic IG wire, V DC PNP, IP 67 Purge ports (PP) Standard on all SLF valves DN 100-DN 200: Rp 1/2, DN 250-DN 400: Rp 3/4, Rp 1 Bottom cover (BC) Bottom cover with screws and gasket See page 4 for details Locking pin (LP) Available for SLF DN 80 - DN 400 See page 4 for details Load distribution rings (LDR) Available for SLF DN 80 - DN 400 Stainless steel EN Others on request. Stem/piston rod Available for SLF DN 80 - DN 400 See page 4 for details (SP) protection Pneumatic cylinder Accessories Code Model Design Solenoid valve (SV) Parker Namur valves for EC 100-EC 160 G1/4, Mono stable 5/2, Namur series VDI/VDE 3845, IP 65, 24 V DC/110 V AC/220 V AC Parker Namur valves for EC 200-EC 400 G1/2, Mono stable 5/2, Namur series VDI/VDE 3845, IP 65, 24 V DC/110 V AC/220 V AC Magnetic limit switch (MagLS) KITA KT-50R for EC EC wire, V AC/DC, IP 65 KITA KT-50N for EC EC wire, V DC, IP 65 The accessories are described in separate data sheets. For advice and information on other accessories or on ATEX-classified ones, please contact Stafsjö or your local representative. Specify the Stafsjö valve Stafsjö s valves are modular designed and they can easily be customized according to media and requirements. Below are examples of how you can specify your Stafsjö valve. Further information is available on SLF-L-200-E-TY-HWR-PN10 Valve type Body material Size Seat Box packing Actuator Flange drilling All electronics and basic eqipment that differs from standard most be specified in detail issue 3

5 Part list Pos. Part Material (Name) 1 Hand wheel Epoxy coated cast iron Ø 315 (EN-JL1040/GG25), > Ø 400 (EN-JL1030/GG20) 2 Yoke Epoxy coated steel (EN /SS 1312) 2a Bearing Iglidur XTM 2b Slide washer Brass (CW614N/SS 5170) 2c Bearing Iglidur XTM 2d Washer Stainless steel (EN /SS2346) 2e Locking nut Steel, zinc coated 3 Stem Stainless steel (EN /SS 2346) > DN 350 stainless steel (EN / SS 2346) with a gate clevis in (EN /SS 2172) 3a Stop washer Stainless steel (EN /SS 2333) 3b Screw Stainless steel (A2) 3c Washer Stainless steel (A2) 4 Stem nut Brass (CW614N/SS5170) 5 Tie rod < DN 300: Stainless steel (EN /SS 2333) 5a 3) Washer Stainless steel (A2) 5b 3) Nut Stainless steel (A2) 6 Gate See equipment B 7 Beam < DN 300: Aluminium (EN AW-6063-T6) > DN 350: Epoxy coated steel (1.0038/SS1312) 8 Gland Epoxy coated nodular iron (EN-JS1020/GGG40) 8a Stud bolt Stainless steel (A2), zinc coated 8b Washer Stainless steel (A2) 8c Nut Stainless steel (A2), zinc coated Pos. Part Material (Name) 9 2) Box packing See equipment D 9a 2) Box bottom scraper UHMWPE 10 Valve body See equipment A 13 Seat 2) See equipment C 16 Gate guard, not for HW Carbon steel 17 Gate clevis Stainless steel (EN /SS 2346) 18 Cylinder See data sheet 20 Clevis pin Stainless steel (EN /SS 2346) 21 Split pin Stainless steel (EN /SS 2343) 25 Piston rod Stainless steel (EN /SS 2346) 28 Locking nut Stainless steel (EN /SS 2346) 47 1) Gasket Dixo ) Bottom cover Epoxy coated nodular iron (EN-JS1020/GGG40) 54a 1) Screw Stainless steel (A2) 54b 1) Washer Stainless steel (A2) 55 Plug Steel, zinc coated 56 1) Locking pin Stainless steel (EN /SS 2333) Two is needed for > DN ) Stem protection Rubber 62 Wedge Stainless steel 63 Stemtube Stainless steel (EN /SS 1312), expoxy coated 64 Plug Plastic 1) Optional accessories 2) Recommended spare parts 3) > DN 350 details are replaced by screws, washers and nuts issue 3

6 E F G H K D C A L B* J Main dimensions Dimensions (mm) DN A B 1 B 2 C D E F 1 F 2 G H J K L B 1) Minimum required face-to-face for installation. B 2) Installed face-to-face. F 1 Valve equipped with bottom cover, gasket and screws. F 2 Valve without bottom cover, gasket and screws. Main dimensions are only for information. Contact Stafsjö for certified drawings issue 3

7 2 2 2 DN 80 - DN 200 DN DN 300 DN DN 400 Flange drilling according to EN 1092 PN 10 Flange drilling information (mm) DN Outside flange diameter Bolt circle diameter Number of throughgoing holes ( ) Size of throughgoing holes Ø18 Ø18 Ø18 Ø22 Ø22 Ø22 Ø22 Ø22 Ø26 22,5 22,5 22,5 22,5 22, ,25 11, DN 80 DN DN 200 DN DN 350 DN 400 Flange drilling according to ASME/ANSI B16.5 Class 150 Flange drilling information (mm) DN Outside flange diameter 190,5 228, ,4 342,9 406,4 482,6 533,4 596,9 Bolt circle diameter 152,4 190,5 215,9 241,3 298, ,8 476,3 539,8 Number of throughgoing holes ( ) Size of throughgoing holes Ø18 Ø18 Ø22 Ø22 Ø22 Ø26 Ø26 Ø30 Ø ,5 22,5 22,5 22, , issue 3

8 2 2 2 DN 80 - DN 100 DN DN 250 DN DN 400 Flange drilling according to AS 2129 Table D Flange drilling information (mm) DN Outside flange diameter Bolt circle diameter Number of throughgoing holes ( ) Size of throughgoing holes Ø18 Ø18 Ø18 Ø18 Ø18 Ø22 Ø22 Ø26 Ø ,5 22,5 22,5 22, DN 80 - DN 100 DN DN 200 DN DN 400 Flange drilling according to AS 2129 Table E Flange drilling information (mm) DN Outside flange diameter Bolt circle diameter Number of throughgoing holes ( ) Size of throughgoing holes Ø18 Ø18 Ø18 Ø22 Ø22 Ø22 Ø26 Ø26 Ø ,5 22,5 22,5 22, issue 3

9 JOHANNESBURG Tel : Fax : sales.jhb@valve.co.za TECHNICAL SALES & SUPPORT Richards Bay Rustenburg Sasolburg Secunda : : : : / DURBAN Tel : Fax : sales@valve.co.za