Project Description
Forged Trunnion Mounted Ball Valve
Sizes:DN50~2000mmNPS 2″~48″
Pressure Range:150LB~1500LB
Body Material:WCB,WC6,LCB,WC9,CF8,CF8M,CF3 and CF3M
Soft Seats:PTFE,RPTFE,PEEK,DEVLON,NYLON.
Metal Seats: Tungsten Carbide(TC), Stellited, Ni60.
Temperature:-30ºC~425ºC
Standard :
Design: API6D, BS1414/ASME B 16.34
Face to Face: ASME B 16.10
End Flange:ASME/ANSI B 16.5,
BW End: ASME B 16.25
Test :API598
Fire safe:API607/API6FA
Anti-static NACE MR-01-75.
Double block and bleed design(DBB)
- Double stem sealing.
- The ball can maintain pressure sealing of pipeline when it is closed or fully opened.
- Shorter upper sleeve reducces bearing load and operation torue
- Limit device ensures the accurate opening and closing position of the valve.
- The ball and stem are separated so as to reduce stem load.
- The stem adopts anti-blow-out design.
- The sealing surface is inserted into te metal seat by polymer or plastic
- The metalbacked self-lubricating PTFE bearing and PTFE thrust washers
- Reduce the opening torque and prolong the service life of the valve.
- Stem leakage can be prevented through the emergency grease fitting.
Application
Refinery
Chemical
Petrochemical
Power plant
Gas
Drive option:
Drive actuators offered for the knife gate valve include handwheel with rising or non-rising stem, or alternatively double or single-acting pneumatic cylinders, Bevel Gear, electric actuators.
Pneumatic Accessories:
Cylinder & Solenoid (FESTO,AirTAC,HERION,ASCO,UNIWO,SMC)/ Positioner(YTC,ABB, SIEMENS,AZBIL)/Filter/ Limit switch(OUMRON,FESTO,IFM,P+F)