b'LARGE DIAMETER BUTTERFLY VALVESLARGE DIAMETER FLANGED BUTTERFLY VALVE LINED CONCENTRIC STYLEMODEL HU-B70, HU-B10 PN10~25Stem Configuration Top FlangeAvailable in round key, square,Top Flange as per ISO 5211 double D and 45 squareShaft Seal Bonding of elastomer to phenolic backing ring protects againstO Ringsdistortion, a common cause of Prevents stem leakage shaft leakage.Body High strength for strongpressure resistance.BushingsDisc PTFE/Bronze Stem bushingsPrecision profile disc reduces valve torque, isolatesprovides bubble-tightthe stem from the valve bodyshut-off and assures and prevents corrosion. minimum torque value and long seal life.Connection between disc Linerand shaft Quality vulcanised linerThe pin, spline and square phenolic backed. connection are all available.MATERIALSSpecificationName 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~80CEPDM -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~100C42 SUPERSEAL - Butterfly Valves'