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Products   Overview   Ball Valve   Gate Valve   Globe Valve   Butterfly Valve   Check Valve   Technical Details     Wafer Check Valve     Features Design  api 6d / api 594 / asme b 16.34 Face to face  api 6d / api 594 Testing  api 6d / api 598 Material  astm specifications Trims  varieties of combinations.  soft seat for tight shut-off.  Lesser weight, smaller size and lesser force to open. Optional  replacement of conventional check valves without pipeline modification.   Materials of construction No. Description Wcb C5 Lcb Cf8m 1 Body  A 216 gr. Wcb A 217 gr. C5 A 352 gr. Lcb A 351 gr. Cf8m 2 Seat ring  Wcb + 13% cr. Seel Wcb + 13% cr. Seel A 352 gr. Lcb+ss304 A 351 gr. Cf8m 2a Soft seated ring  Epdm / nitrile  vition / neoprene Epdm / nitrile  vition / neoprene Epdm / nitrile  vition / neoprene Epdm / nitrile  vition / neoprene 3 Disc A 217 gr. Ca15 A 217 gr. Ca15 A 352gr. Lcb+ss304 A 351 gr. Cf8m 4 Spring Ss304 / inconel Ss304 / inconel Ss304 / inconel Ss316 / inconel 4b Hinge A 216 gr. Wcb/ a 217 gr. Ca15 A 217 gr. C5/ a 217 gr. Ca15 A 351 gr. Cf8/ a 352 gr. Lcb A 351 gr. Cf8m 5 Flange seal Epdm / nitrile  vition / neoprene Epdm / nitrile  vition / neoprene Epdm / nitrile  vition / neoprene Epdm / nitrile  vition / neoprene 6 Stem shaft / hinge pin A 276 tp 410 A 276 tp 410 A 276 tp 304 A 276 tp 316   Dimension Class 150 Wafer check valves Size nps (") 2 2 1/2 3 4 6 8 10 12 Size dn (mm) 50 65 80 100 150 200 250 300 A F / f Mm 19 19 19 19 19 29 29 38 B Dia Mm 104 123 136 174 222 279 339 409 C Dia Mm 60 73 89 114 168 218 273 323 Class 300 Wafer check valves Size nps (") 2 2 1/2 3 4 6 8 10 12 A F / f Mm 19 19 19 19 22 29 38 51 B Dia Mm 111 130 149 180 250 307 361 422 C Dia Mm 60 73 89 114 168 218 273 323
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