PQ64OHPneumatic eccentric hemispherical valve is a kind of right angle rotating control valve, which is composed of piston type double acting or single acting (spring return type) pneumatic actuator and eccentric hemisphere valve. It is used together with electric valve positioner or solenoid valve, which can realize the adjustment or cut-off control of fluid medium in process pipeline. There is shear effect between the ball of hemispherical notch and the valve seat, especially suitable for containing fiber, Small solid particles, pulp, coal ash and other media working conditions

1. Water loss is zero. After the valve is opened, the flow channel is completely unblocked and the head loss is zero. It can save a lot of energy.  
2. Reliable sealing mode. The soft sealing structure has self sealing performance, and the hard sealing structure has elastic compensation performance.  
3. Wear resistance and long service life. After the ball valve is opened, the ball crown is biased in the valve body and is not directly washed by the medium.  
4. Automatic cleaning function. The edge of the ball crown of the hard seal eccentric hemisphere valve adopts the blade shape, which can not only scrape off the dirt on the valve seat, but also cut off the debris.  
5. Fast opening and closing. The eccentric crankshaft can be opened and closed by 90 degrees, and the opening and closing time is short
6. Suitable for high flow rate. Through flow channel, solid eccentric crankshaft make it suitable for high flow rate without vibration.  
1. Applicable medium: clear water, raw water (including sediment), sewage, sea water, steam, gas, natural gas, oil, etc.  
2. Applicable temperature: soft seal eccentric hemisphere valve is - 40 ℃ - 135 ℃; hard seal hemisphere valve is from normal temperature to 600 ℃
3. Applicable pressure: pn6-pn64.  
4. Nominal diameter: dn50-1200