China API 6D 2 Piece Forged Steel Floating Ball Valve

Forged Steel Floating Ball Valve Features:
Two Pieces /Three Pieces Forged Steel Body
Floating Ball, Full&Reduced Bore
Anti-static Device
Blow-out Proof Stem
Fire Safe Design
Low Emission
Specifications:
Design: ASME B16.34/BS5351
Face to Face: ASME B16.10
End Flange: ASME B 16.25
BW End: ASME B16.25
Test: API 598/BS 6755
Fire Safe Test: API 607/API6FA
Special: NACE MR-01-75
Floating ball valve design feature:
Live loaded gland flang
Live loading is designed to provide gland load retention, compensating for expected in-service consolidation of packing. A set of belleville spring washers are used on each gland stud to help exert a continuous compressive force on the gland follower flange and therefore reduce fugitive emissions from the stem packing. ARITA standard belleville-spring washers are protected by a weatherproof cap to keep them free from environmental contamination, resulting in a long stable life.
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No.PartMaterial1BonnetASTM A105+ENP A182-F6,F304,F316,F316L,F304L,F512SeatPTFE RPTFE PEEK PPL 3Body GasketPTFE Graphite4Thrust-WasherA105+ENP A182-F6,F304,F316,F316L,F304L,17-4PH,F515StemStainless Steel6Stop NutCarbon Steel7Spring GasketA216-WCB 10256+Cr8LeverASTM A182-F304,F3169Backup Ring1015+Cr Carbon Steel+Cr10Limited PlateStainless Steel11Positioning pinPTFE Graphite12PackingPTFE13"O"-RingNBR Viton14Antistatic SpringStainless Steel SS31615Ball ASTM A105+ENP ASTM A182-F6,F304,F316,F316L,F5116Body ASTM A105+ENP A182-F6,F304,F316,F316L,F304L,F5117StudASTM A193-B7,B8M,B8,B8M18NutASTM A194-2H,2HM,8,8M