b'LARGE DIAMETER BUTTERFLY VALVESLARGE DIAMETER FLANGED BUTTERFLY VALVE RESILIENT SEAT DOUBLE / TRIPLE OFFSETMODEL HU-B60~63 PN10~25Top FlangeDesign. Top flange as per ISO 5211 Double and triple eccentric design provides a lowtorque valve.Connection betweenSeat. disc and shaftNon corrosive weld overlay Two piece stem design, tapersealing surface.pin connection.Disc Sealing Ring.Disc. Rubber and graphite, Double and triple eccentric various combinations disc design reduces frictionavailable. on the sealing ring providing long service life.Bushes. Design ensures maximum strengths & life as well asbi-directional tightness.Eccentric Offset DiscMATERIALSSpecificationName Material RemarkASTM DIN EN JISCast Iron ASTM A126B GG25 EN-GJS-250 FC200Ductile Iron ASTM A536 GGG40 EN-GJS-400 FCD450Body Carbon Steel A216 WCB GS-C25 GP 240 GH+N SCPH 2Stainless Steel A351 CF8M 1.4408 BS 970 304 S15 SCS14A351 CF8 1.4301 BS 970 316 S15 SCS13Plated Ductile Iron ASTM A536 GGG40 EN-GJS-400 FCD450 PTFE or NylonAluminium Bronze B148-954 C954 EN 1982 CC491K ABLC2 Coated DiscDisc Stainless Steel A351 CF8M 1.4408 BS 970 304 S15 SCS14 alsoCarbon Steel A351 CF8 1.4301 BS 970 316 S15 SCS13 availableA216 WCB GS-C25 GP 240 GH+N SCPH 2Carbon Steel A216 WCB GS-C25 GP 240 GH+N SCPH 2A276-410 1.4201 BS 970 410-S21 SUS410Stem A276-304 1.4301 BS 970 304 S15 SCS13Stainless Steel A276-316 1.4408 BS 970 316 S15 SCS14A276-316L 1.4401 BS 970 316L SCS14ANBR (Nitrile)-20C~80C EPDM -25C~110CHeat Resistant EPDM -25C~130CNeoprene (CR) -25C~110CSeat Hypalon (CSM) -30C~120CViton (FKM) -20C~200CNatural Rubber (NR) -30C~70CPTFE Cover NBR-20C~150CFull PTFE -20C~180CSilicon (Q) -60C~250CA182 F6A 1.4201 BS 970 410-S21 SUS410Pin Stainless Steel A182 F304 1.4301 BS 970 304 S15 SCS13A182 F316 1.4408 BS 970 316 S15 SCS14PTFEBushingBronze B62 BC62NBR -20C~80CO-Ring EPDM -25C~110CViton -20C~100C38 SUPERSEAL - Butterfly Valves SUPERSEAL - Butterfly Valves 39'