China plug valve manufacturer,factory and supplier-Plug valves

contact us



Address: NO.720, Suide Road, Jiading District,Shanghai, China.


Spring Return Pneumatic Plug Valve


  • Port size:DN15-DN600
  • Pressure:Class 150-Class 600,PN10-PN100
  • Medium:W.O.G.
  • Temperature :-29~180℃ or higher
  • Body material:WCB, CF8,CF8M,etc.
  • Description:Spring return Pneumatic plug valve manufacturer and supplier in China
Spring return Pneumatic plug valve manufacturer and supplier in China, Spring return pneumatic plug valve is componsed of lubricated or non-lubricated plug valve and sigle acting spring return pneumatic actuator. Spring return pneumatic plug valve is a quick switch through valve, due to the movement between the rotary sealing surface with wiping effect, and in full open can completely prevent contact with the flow of media. Spring return pneumatic plug valve can usually also be used with suspension of the medium.Another important feature is that it is easy to adapt to a multi-channel structure, Spring return pneumatic plug valve can have two, three, or even four different flow channels.This simplifies the design of the piping system and reduces the number of valves and connections required in the equipment.

Spring return pneumatic plug valve specification
Nominal pressure range: 150Lb-600lb or 1.00-10 Mpa
Nominal size: 1/2"--24" (DN15--DN600)
Applicable temperature: -29~ 180℃
Material: cast steel, 304, 304L, 316, 316L stainless steel, etc
Pipe connection: flange connection, welding
Form: two or three way
Seal structure: soft seal 
Operation mode: manual, turbine, pneumatic, hydraulic, electric (optional)
Applicable medium: petrochemical industry, chemical industry, gas, natural gas, liquefied petroleum gas and general industry.
Spring Return pneumatic plug valve advantages
1.Pneumatic plug valve for frequent operation, open and close quickly, light.
2.Pneumatic plug valve fluid resistance is small.
3.Pneumatic plug valve is simple structure, relatively small volume, light weight, easy to maintain.
4.Good sealing performance.
5.Not limited by the direction of installation, the flow of the media can be arbitrary.
6. No vibration and little noise.

Spring Return pneumatic plug valve structure feature
1. The inlet and outlet channel of the 
Spring return Pneumatic plug valve body is designed for the double-channel groove sealing ring structure, plug  in the process of rotation, the sealing pressure between the sealing pair changes gradually, until Pneumatic plug valve reaches the fully open or fully closed position, produce enough specific pressure of the sealing pair to reach zero leakage.
2. The double-channel groove sealing ring of plug valve can not only stabilize PTFE bushing in the plug valve body without displacement, but also absorb the trace deformation of bushing caused by the change of temperature difference. At the same time, a powerful wiping effect can be generated between bushing and cock, and the service life of sealing surface can be improved.
3. The upper part of the plug shaft of 
Spring return Pneumatic plug valve adopts a PTFE diaphragm, O-ring and adjusting gasket, which can adjust the specific pressure of sealing between the sealing surface, make the plug rotate flexibly, and ensure the sealing of the inlet and outlet ends and the connecting end of the middle flange.
4. The whole sealing process of the plug valve can be approximately considered to be independent of the pressure in the pipeline.
Spring return Pneumatic plug valve according to the use of temperature and working medium with different materials filling, good lubrication, long life.

Spring return pneumatic plug valve pneumatic actuator parameter

1). Pressure Range: Max. Working pressure 10bar 
2). Air pressure: 2.5bar~8bar 
3). Adjustment Range: 90° ± 5° 
4). Ambient temperature: -20 ~ +90° C 
5). Type: Double-acting, Single-acting (spring return)
6). Optional accessories: Solenoid valve, limite switch, electric position, air regulator
7). Lubrication: All the moving parts are coated with lubricants, extending their service life 
8). Life Time: One million time 
Spring return Pneumatic plug valve with single action type (spring return), pinion and rack drive, safe and reliable;Large diameter valve using series AW pneumatic actuator fork transmission, reasonable structure, large output torque, double action and single action.
1. Geared double piston with large output torque and small volume.
2. The cylinder is made of aluminum and gold, light in weight and beautiful in appearance.
3. Manual operation mechanism can be installed at the top and bottom.
4, rack type connection can adjust the opening Angle, rated flow.
5. The actuator can choose feedback indication of live signal and various accessories to realize automatic operation.
6. IS05211 standard connection provides convenience for product installation and replacement.
7. Pitch screws adjusted at both ends can provide ±4° adjustable range for standard products at 0° and 90°.Ensures synchronization accuracy with ball valve.

Spring Return Pneumatic plug valve accesories:
1 positioner (for regulating function)
2 solenoid valve
3 limited switch
4 handwheel
5 Air filter reducer