|Size:||NPS: 1/2”~8”||Pressure:||150LB To 2500LB|
|Temperature:||Low Temperatue, Normal Temperature And High Temperature||Body And Trim Material:||Cast Steel, WCB,ASTM A105, ASTM A350 LF2, ASTM A182 F304 F304L F316/F316L/F51 F53 F55,ASTM A351 CF8 CF8M CF3M ASTM A182 F6a 17-4PH|
|Seat Material:||PTFE, RPTFE, DEVLON, Molon,PEEK,Metal Seat||Body And Stem Sealing:||Oring(FKM,FFKM NBR,FPM HNBR, VITON,EPDM, AFLAS), Spiral Wound Gasket(316SS+ Graphite) Packing(Graphite, PTFE)|
|Operation:||Wrench, Lever, Gearbox, Pneumatic, Hydraulic, Electric.||Design Feature:||Casting ,Forging, Full Bore,Reduced Bore,Uni-body,Split Body,Three-pc Ball Valve,Side Entry Design,Split Body, Side Entry Design,Metal To Metal Sealing,|
bs6755 two piece ball valve,
300lb Two Piece Ball Valve,
flanged full bore ball valve
Two Pcs Flanged Side Entry Ball Valve
Reliable seat seal
The structure design of elastic sealing ring has been adopted for floating ball valve. This seat design features a bigger sealing pressure ratio between the ring surface and the ball when medium pressure gets lower, where the contacting area is smaller. Thus, the reliable sealing is encusred. When the medium pressure gets higher, the contacting area between seat ring and ball becomes bigger as the ball sealing ring transforms elastically to undertake the bigger force pushed by the medium without any damage.
The traditional packing flange design has been improved to be of two piece structure, i.e., being as a packing flange plate and a follower, the latter contacts the flange plate with spherical surface. Thus, the follower remains vertical always, and is lined internally with a PTFE bush to prevent galling against and friction between the stem, which can also reduce the operation torque of the valve.
Fire safe design
With the valve heated in a fire application, the Non-metal material parts such as seat sealing ring of PTFE, stem back seat gasket, gland packing, and the sealing gasket between body and bonnet might disintegrate or be damaged due to high temperature. Coosai Valve's specially designed structure of auxiliary metal to metal seal is provided to effectively prevent both internal ball and external ball leakage of the valve. As per required by customers, Coosai Valve's floating ball valves with fire safe design can meet the requirement of API607, API6FA, BS6755.
Reliable Stem Seal
The Below-out proof design has been adopted for the stem to ensure that even if the pressure in the body cavity is risen accidently and design with a back seat, being assembled from underneath. The sealing force against the backseat gets higher as the medium pressure becomes higher. So the reliable seal of the stem can be assured under variable medium pressure.
V type packing structure has been employed to effectively transform the pushing force of gland flange and the medium pressure into the sealing force against the stem.
The traditional packing flange design has been improved to be two-piece structure, i.e., being as a gland flanged and gland, the latter contacts the gland flange with spherical surface. Thus, the gland remains vertical always, and is lined internally with a PTFE bush to prevent the galling against and friction between the stem, which can also reduce the operation torque of the valve.
Based on customers' requirement, a packing tightening design may be employed to obtain more reliable stem packing sealing, which is loaded by beveling spring.
|Ball Valve Type||Design and Manufacture||Face to Face/End to End||Flange Dimensions||Pressure Temperature Rating||Inspection and Test|
|Split Flange ball valve||BS5351||ANSI B16.10||ANSI B16.5||ANSI B16.34||API6D|
|Fixed flange ball valve||API6D/API608||API6D||ANSI B16.47||ANSI B16.34||API598|
|Body material||Trim material||Seal material||Gasket/Packing|
|WCB/LCB/CF8/CF8M/CF3/CF3M,ETC.||SS410, SS420, SS304, SS316,ETC||PTFE, RPTFE, PEEK, PPL, ETC.||GRAPHITE. PTFE, PPL. ETC.
1: Full bore or reduced bore
2: Two-Piece downstream sealing
3: Fire safe design(API 607)
4: Blowout-proof system
5: Anti-static design
6: Fugitive emission testing(optional)
Design standard: API 6D,DIN3357-1 , EN12516-1
Face to Face standard: API6D, ASME B16.10, DIN3202
Connecting Standard: ASME B 16.5, ASME B16.47, DIN 2543/4,ASME B 16.25
Test & Inspect Standard: API 6D ,API 598
Working Temperature: -196℃~150℃
Connection type: RF,RTJ,FF,BW.BSPT,NPT
Sour environment:NACE MR0175
*The ball is seat supported for size 8” and smaller.