Data sheet Knife gate valve WB PN10 DN
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- Darrell Fisher
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1 Page: 1(7) Introduction The Stafsjö WB knife gate valve is a bi-directional seated valve with full bore. Its main applications are different liquids at water, waste water and biogas plants. The WB is designed of a one piece valve body in cast iron. The sealing profile of Nitrile or EPDM is in level with the bore of the body which counteract clogging of the valve. The gate in polished stainless steel guarantees low actuating operations and minimal wear. The unique Stafsjö box packing TwinPack in three layers gives a secure sealing and high operation reliability. The flange sealing is made of rubber and it is integrated in the body of the valve. Further flange gaskets are therefore unnecessary. Due to the flexible design, The WB can be equipped with different types of manual and automatic actuators and accessories, such as limit switches. The Stafsjö knife gate valve WB is designed, manufactured, inspected and tested according to the European directive Pressure Equipment Directive (PED 97/23/EC) category II module A1 and is therefore CE marked. The WB valve is also available in an ATEX design (ATEX 94/9/EC II cat 3 G/D zone 2,22). Please contact Stafsjö or your local representative for advice. 0640
2 Page: 2(7) Design data Maximum working pressure body at 20 C Maximum differential pressure at 20 C DN bar DN bar Basic equipment A. Valve body Material Max. temp. C Not recommended Cast Iron A GG Corrosive media Standard colour: electrostatic painted with powder epoxy colour, thickness µm, RAL B. Gate DN Body Material Stainless steel A AISI316L/W Stainless steel A SS2333/AISI304/W C. Sealing profile Max. temp. C EPDM E 120 NITRIL N 100 D. Box packing ph Max. temp. C TwinPack TM TY E. Flange drilling EN 1092 PN 10 F. Face-to-face dimensions DIN 3202 K1 DN50-300, Stafsjö DN Actuator Manual Automatic Hand wheel HW Pneumatic cylinder AC Hand lever DN HL Elektric motor EM Chain wheel CW Hydraulic cylinder MH Bevel gear BG Pneumatic cylinder recommended sizes at 5 bar air pressure AC Maximum force (kn) 3,5 3,5 3,5 3,5 3,5 3,5 9,0 9,0 9,0 14,1 14,1 14,1 22,1 The table gives recommended cylinder sizes at normal operation at 5 bar air pressure. For other operating conditions, please contact Stafsjö or your local representative for advice. Electric motor recommended size with AUMA multi-turn AUMA Attachment F10/A F10/A F10/A F10/A F10/A F10/A F10/A F10/A F10/A F10/A F10/A F10/A F10/A Electric motors are mounted according to standard ISO The table gives recommended motor sizes at normal operation. For other operating conditions, please contact Stafsjö or your local representative for advice For ATEX classified and other actuators, please contact Stafsjö or your local representative for advice.
3 Page: 3(7) Accessories Limit switches Mechanical Ersce E100 Inductive ifm electronic IG-2008-ABOA / IG wire V AC/DC ifm electronic IG-3008-BPKG / IG wire V DC PNP Accessories to pneumatic cylinder Solenoid valve Metal Work SOV 35 SOS OO ¼ Metal Work SOV 45 SOS OO ½ Magnetic limit switch Elobau wire V AC/DC Elobau PE 3-wire V DC For accessories classified according to ATEX or advice regarding accessories, please contact Stafsjö or your local representative. Valve capacity K v K v value for water at 20 C DN [mm] 3 m / h K v [ ] bar Fully open valve / Bore [mm 2 ] DN [mm] 3 m / h K v [ ] bar Fully open valve / Bore [mm 2 ] Pressure tests Pressure tests are performed with water at 20 C according to ISO 5208 meaning: 1,5 x maximum working pressure for open valve shell test 1,1 x maximum differential pressure for closed valve obturator tightness test Leakage rate Rate A according to ISO 5208 no visible leakage for the duration of the test TAPPI TIS 405-8, MSS SP-81
4 Page: 4(7) Parts and Material 1 2c 2 2b 2a 1b a 4b 4 7g 7e 7f 20b 20a c 8b 8a c 7c 7d 13b 13a Pos Part Material Pos Part Material 1 Hand Wheel Cast iron (GG25), epoxy colour 8 Gland Ductile iron (GGG-50), epoxy colour 1b Straight pin Stainless steel (A2/DIN 1481) 8a PinnBolt Stainless steel (A2) 2 Yoke Steel (Q235), epoxy colour 8b Washer Stainless steel (A2) 2a Bearing Bar brass (CuZn39Pb3) 8c Nut Stainless steel (A2) 2b Slide Washer POM 9 Boxpackning * See equipment D 2c Bearing Bar brass (CuZn39Pb3) 10 Valve body See equipment A 3 Stem Stainless Steel SS c Flange sealing * NBR 4 Stem Nut Bar brass (CuZn39Pb3) 13 Sealing profile * See equipment C 4a Washer Stainless steel (A2) 13a Pin, long * Stainless Steel 4b Bolt Stainless steel (A2) 13b Pin, short * Stainless Steel 6 Gate See equipment B 16 Gate guard, Not for HW Steel (Q235), epoxy colour 7 Beam Steel (Q235), epoxy colour 18 Cylinder See data sheet 7c Bolt Stainless steel (A2) 20 Bolt Stainless steel (A2) 7d Washer Stainless steel (A2) 20a Washer Stainless steel (A2) 7e Washer Stainless steel (A2) 20b Nut Stainless steel (A2) 7f Nut Stainless steel (A2) 25 Piston rod Stainless Steel (AISI303) 7g Bolt Stainless steel (A2) * Recommended spare parts
5 Page: 5(7) Main dimensions E G K STAFSJÖ STAFSJÖ STAFSJÖ F C A L H D B J Dimension (mm) A B C D E F G H J K L Actuator EM is rotated 45 for DN Weight, valve incl. hand wheel (HW) kg 5,5 6,5 7,5 9,
6 Page: 6(7) Flange Drilling All specifications subject to change without notice.
7 Stafsjö standard Data sheet material Materials Knife corresponding gate valve foreign material standards Page: 7(7) MATERIALS Name Sweden Europé Germany U Japan Type Stafsjö SS EN Material Name EN std W. Nr. DIN ASTM AISI UNS JIS Castings Cast iron GG EN-JL2030 EN-GJL-HB195 EN 1561 W A48 No 30B G5501 FC20 / FC200 Cast iron GG EN-JL2040 EN-GJL-HB215 EN 1561 W A48 No 35B G5501 FC25 / FC250 Ductile iron GGG EN-JS1050 EN-GJS EN 1563 W A G5502 FCD50/FCD500 Stainless steel (not pressure purposes) GX5CrNi19-10 EN A CF8 A743 G5121:80 SCS13 Stainless steel GX5CrNiMo EN W A351 CF8M A351 G5121:80 SCS14 Stainless steel CG8M A351 CG8M 317 Stainless steel CG3M L Stainless steel Hastelloy C Hastelloy C276 W A494 CW12MW N10276 Stainless steel - SMO 254 SMO A351 CK3MCuN S31254 Stainless steel - Duplex Duplex EN Sheet metal - pressure purposes Steel P265GH EN A516 Grade 60 Stainless steel SS2333 / X5CrNi18-10 EN W A240 Type S30400 SUS304 Stainless steel SS2343 / X3CrNiMo EN W A240 Type S31599 SUS316 Stainless steel SS2347 / X5CrNiMo EN W A240 Type S31600 SUS316 Stainless steel SS2348 / 316L X2CrNiMo EN W A240 Type316L 316L SUS316L Stainless steel 317L X2CrNiMo EN W A240 Type317L 317L SUS317L Stainless steel SS2377 / FAL X2CrNiMoN EN W S32205 S31803 SUS329J3L Stainless steel-ti.stab. 316Ti Ti Titanium Titan / TiGr2 B265 Grade SMO 254 SMO X1CrNiMoCuN EN S31254 Sheet metal - other Steel S355JR EN A572 Grade 50 G3106 SM490A Stainless steel SS X5CrNi18-10 EN W A S30400 G SUS304 Stainless steel SS X3CrNiMo EN W A S31600 G SUS SMO 254 SMO X1CrNiMoCuN EN S31254 Bar, pipe Steel SS S355J2H EN A618 Grade 3 Steel SS1312/Q S235JRH EN A36 Stainless steel SS X20Cr13 EN W S42010 SUS420J1 Stainless steel SS X6Cr17 EN W A S43000 G SUS430 Stainless steel SS X5CrNi18-10 EN W A S30400 G SUS304 Stainless steel SS X3CrNiMo EN W S31600 SUS316 Stainless steel SS X8CrNiS18-9 EN W S30300 G SUS303 Stainless steel SS X14CrMoS17 EN W F S43020 G SUS430F Screw, nut Stainless steel A X5CrNi18-10 W S30400 SUS304 Stainless steel A SUS316 Steel SS Aluminium Casting AlSi7MgFe 4244 EN AC AlSi7MgFe EN 1706 B26 356,0 A03560 H AC4C Casting ENAC-AlSi12(b) EN AC AlSi12Mn EN 1706 Casting ENAC-AlSi9Cu3(Fe) 4250 EN AC AlSi9Cu3(Fe) EN B413.0 H ADC10 Extruded EN AW-6063-T6 EN AW-6063-T6 EN AW-6063-T6 AlMg0.7Si EN 1706 AA6063 Copper alloy Brass SS Cast brass SS CuZn39Pb3 EN 1982 Bar brass SS CuZn39Pb3 EN A C36000 Oil bronze 2991 oilbronze 2991 ISO 2795
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