Single acting pneumatic three eccentric butterfly valve hard seal 150LB

This pneumatic flanged metal-to-metal butterfly valve features hard alloy overlay sealing between disc and seat plus triple eccentric design for friction-free operation and self-tightening bidirectional zero leakage. With solid integrated flanged body and rack-and-pinion pneumatic actuator available in double or spring return type, it can be fitted with solenoid valves and positioners for remote automatic control. Its streamlined disc brings low flow resistance and large flow capacity, delivering outstanding resistance to high temperature and particle abrasion for severe service pipelines.

1.Durable sealing for harsh service

Metal-to-metal hard alloy seal resists high temperature and particle erosion, avoiding rubber aging and prolonging service life greatly.

2.Tight shutoff under high pressure

Triple eccentric friction-free design realizes self-tightening sealing, achieving reliable bidirectional zero leakage at high differential pressure.

3.Safe automatic & stable installation

Robust flanged connection is vibration-proof; pneumatic actuator provides explosion-proof quick operation and convenient remote control with low maintenance cost.

4.Fast Pneumatic Automatic Control

Rack & pinion actuator realizes 90° quick on/off within 1~5s; spring return(air fail close) or double acting available, fitted with solenoid/positioner for remote cut-off and modulating control.

Standard export wooden case packaging

The single acting pneumatic hard seal butterfly valve is mainly used for municipal heating steam, power plant flue gas & desulfurization duct, metallurgical furnace hot air pipe, petrochemical thermal oil & fuel gas line, industrial wastewater and exhaust treatment system.