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Pneumatic flange gate valve is a low-bracket open-stem pneumatic gate valve with pneumatic actuator (double-layer cylinder with buffer mechanism) and manual and its protection mechanism (manual and self-locking pneumatic-manual conversion device). Due to the double-cylinder structure of the valve, compared with the single-cylinder pneumatic gate valve, the lifting force is doubled. This fundamentally solves the shortcoming that certain valve bodies of the single-cylinder pneumatic gate valve cannot be opened due to wedging. Moreover, because the pneumatic gate valve has a buffer mechanism, it can effectively slow down and lighten the abrasion of the valve plate car sealing surface and valve body sealing surface due to the downward impact of the piston when the stainless steel pneumatic valve is closed. The phenomenon.
1. Pneumatic gate valve is equipped with pneumatic actuator and manual mechanism.
2. The gate valve actuator adopts a double-cylinder structure. Compared with a single-cylinder pneumatic gate valve, the lifting force is doubled.
3. It solves the shortcoming that certain valve plates of single-cylinder pneumatic gate valves are wedged in the valve body and cannot be opened.
4. Equipped with a buffer mechanism, which can effectively reduce the wear of the valve plate sealing surface and the valve body sealing surface caused by the downward impact of the piston when the valve is closed, and can also avoid the phenomenon of gate jamming.
5. The sealing performance is very good, and the allowable leakage can reach 10-8×KV.
6. Wide range of application, temperature can be -196ºC-600ºC, caliber 40mm-600mm. The valve seat has three types: parallel, 60°V-shaped incision and 90°V-shaped incision, which are suitable for different use occasions.
7. The valve body of the pneumatic gate valve can be insulated in the form of a jacket for use in occasions that are easy to block, condense or coke after the medium is cooled
Model:Double Acting DR type,single acting SC type
Specification:DR/SC0015-5000,angle:90º,120º,180º,customized
Structure:Double Piston Rack & Pinion
Port:universal,customized
Cylinder Material:Aluminum alloy(Surficial positive pole oxidized)
Cover Material:Pressure casting aluminum alloy(coated)
Sealing Material:nitrile rubber,silicon rubber(low temperature),Fluorine rubber(High temperature),customized
Largest pneumatic pressure:10bar
Operating Method:Double acting,Single acting(Spring Return)
Controlling Method:2 way cut off (on close),regulating
Accessory:Solenoid Valve,Positioner,Limit Switch,air resource treatment triple union fittings,manual operator,
Size Range: DN50to DN800mm
● Pressure Range: 16bar to 40bar;CLASS125~300LB
● Temperature Range: -196℃ to 400℃
● Material Options: Stainless Steel or Carbon Steel
● Actuator Typs: Spring return type or Double acting type
*Note:The main parts and seal ring materials of ball valve can be changed for practical working environment or user's special requirement
The actuator of the pneumatic gate valve has two functions, positive and negative, so the valve's opening and closing methods include air opening and air closing. Pneumatic gate valve adopts unique metal contact structure, reliable action, and extremely high shut-off performance, which is superior to conventional shut-off valves. Pneumatic gate valve has excellent shut-off performance and is widely used in industrial fields. Pneumatic gate valve has reliable performance, convenient operation switching and maintenance, and is widely used in petroleum, chemical, marine and other sectors to control various media.
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