Mental-to-mental seal is used between bonnet and body, gate and seat, seat and body PFF Series Gate Valve

 PFF Series Gate Valve

• Full bore design eliminates efficiently pressure drop and vortex, eliminates washing by solids in fluid.

• Mental-to-mental seal is used between bonnet and body, gate and seat, seat and body.

• The surface of gate and seat is welding overlay with hard alloy, which has feature of corrosion resistance and washing resistance.

• The balanced stem can balance the stem load, reduce load of stem thread and bearing to decrease operating torque.

• The bonnet and stem are designed with back seal, which can replace stem sealing under pressure.

• One side of bonnet is designed with sealant injection valve.

• Rising stem structure can indicate open and close of valve.

• Complete with different pneumatic (hydraulic) actuator upon user’s requirements.

• Working Pressure: 2000PSI~20000PSI

• Nominal Bore: 1.13/16"~9" (46mm~230mm)

• Working Medium: oil,natural gas,mud and gas containing H2S,CO2

• Working Temperature: -46°C~121°C(Class LU)

• Material Class: AA,BB,CC,DD,EE,FF,HH

• Specification level: PSL1-4

• Performance Requirement: PR1-2