|Size:||NPS 2" To 60"||Pressure:||150LB To 2500LB|
|Temperature Range:||-196℃~300℃ 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)|
Full Bore Forged Ball Valve,
BW Ends Forged Ball Valve,
Blowout Proof Forged Ball Valve
Side Entry Trunnion Type Forging Ball Valve BW Ends
The side entry trunnion mounted ball valve has been designed two piece body type or three piece body type and with two floating seats, which are movable under the pressure of medium. Under the bottom of seats, seat pre-loading springs are positioned to ensure two floating seats can attach the ball’s surface tightly, other more, pressure of medium also can push seats to attach ball tightly to ensure sealing more reliable.
The trunnion ball valve is equipped with a movable seat seal ring which can generate displacement under the pressure of medium. In case that any medium pressure exists, the pressure will press the valve seat seal ring onto the ball tightly, guaranteeing the sealing performance of the ball valve.
The ball valve are designed in accordance with ISO14313,API 6D,BS 5351,GB/T 19672;
Simple structure with good sealing performance and small torque;
Full bore and reduced bore design with the minimum flow resistance (zero actually);
Emergency sealant injection;
Cavity pressure self relief;
Independent ball and stem;
Low emission packing;
Fire safe, anti-static and anti-blowout stem design;
Valve seat function DBB, DIB-1, DIB-2;
Optional extended bonnet.
Body material: carbon steel, stainless steel, alloy steel
End Connection: RF, RTJ, BW
Pressure range: Class150～2500(PN16~PN420)
Operation: Wrench, worm gear, electric, pneumatic, gas over oil actuator and electro-hydraulic actuator
|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.
Trunnion Mounted ball valve are suitable for using on various kinds of pipelines of Class 150 to Class 2500, PN16~PN160, JIS 10K~ JIS 20K to cut off or turn on the pipeline medium, of which the operation types include worm gear, manul, pneumactic or electric actuators, being in general of flange connection, and butt welding end connection as well.
Blow-out proof stem:
The stem is made separately from the ball with integral T-type round shoulder, retained by bland .(other designs are Available on request)
Spring plus graphite type anti-static device are applied between the ball ,stem, gland Flange and body to keep the electrical Continuity between all the metallic components . And ensure the resistance lower than the most severe service requirement.
Grease injection device
For DN150 (NPS 6) & larger the stem and the valve seat are provided with a sealing grease injection device, For DN125 & smaller, we can provide the sealing grease injection device according to customer requirements. When the O-ring is damaged by accident, by injected sealant sealed to prevent the media through the valve seat ring and stem leaks.
Soft seat: Metal to Metal O-Ring seal
Simple structure reliable sealing Applicable to particulate Reliable sealing low torque meet customers' high
wide application low cost. media conditions sealing reliability and low torque requirements
Fire safe design
Ball valves ensures 100% pass of the fire safe test. As Ball valve applies two sealed design via O-ring seals and metal graphite spiral wound gasket. When the valve is on fire, non-metallic materials such as PTFE seat seals, gaskets ,O-ring seals,rubber etc will be damaged, meanwhile the outer layer of metal graphite spiral wound gasket provides a secondary seal. When the soft seat is burned, metal seat will automatically form a metal seal with ball under the urging of the spring which will effectively control the internal leakage and external leakage. Valve design fully accords with API 607, API 6FA, BS 6755, JB / T 6899 and other standards,
DOUBLE ISOLATION & BLEED (DIB)
Double piston effect seat, medium pressure, both upstream and downstream as well as in the body cavity, creates a resultant thrust that pushes the seat ring against the ball, valve with double piston effect seat rings require a cavity pressure relief to reduce the build-up of over pressure in the body cavity.
DOUBLE BLOCK & BLEED (DBB)
When the ball is in the closed position, each seat seals off the process medium independently at the same time between the up/down stream and body cavity, it allows bleeding the trapped cavity pressure (DBB) through drain and vent valve. The double block and bleed function make it possible to flush the valve under pressure and verify that the seat are sealing properly.
The ball is fixed by trunnion and stem for size 4” &smaller. Trunnion plate support for size 6” & larger