Pneumatic check valve,check valve

Product Features

The design, manufacture and acceptance standards are ANSIB16.34, E101 or JB/T3595

2. For different temperatures, the main material is carbon steel or high-temperature steel, and the sealing surface is surfacing with hard alloy

3. The valve disc is designed to be movably connected to the valve stem via a rocker, allowing it to self-align with the valve's sealing surface to ensure a good fit

4. The sealing surface of the valve seat is inclined at a certain Angle to reduce the closing time, alleviate the impact, and protect the safety of the equipment itself and the pipeline

5. The valve is equipped with a damping counterweight, which can balance the dynamic torque of the closing member and prevent the occurrence of hammer failure

6. The streamlined design of the inner cavity of the valve body ensures a large flow capacity and reduces valve resistance

7. The actuator is a spring-return type cylinder or hydraulic cylinder, and it operates relatively independently from the valve closing member. The failure of the actuator does not affect the operation of the closing member

8. The inner wall of the cylinder ring hydraulic cylinder is coated with a wear-resistant and corrosion-resistant layer, which can increase the service life, reduce the operating resistance, and make the valve flexible and reliable

9. The closing part is equipped with a limit mechanism for opening to prevent damage caused by over-opening

10. The actuator is equipped with valve opening position signal output and local indication of valve opening position

11. Targeted design can also be carried out according to the specific requirements of users

enforce standards

Design and manufacturing standards: ASME/ANSIB16.34, E101, JB/T3595

Structural length standards: JB/T3595, ASME/ANSIB16.10, GB/T12221

Welding end or flange standards: GB/T12224, ASME/ANSIB16.25, GB/T9113, JB/T79 to JB/T82

Test acceptance criteria: JB/T9092, JB/T3595, ASME/ANSIB16.34, E101

Pneumatic check valves are used in the exhaust systems of power plants or thermal power plants, or on pipelines carrying non-corrosive media such as water in other systems, serving as emergency shut-off valves. When the air source enters the upper cylinder, it pushes the piston, causing the shaft to rotate and drive the valve disc, that is, the valve disc opens, and the medium passes through the valve. When the air enters the lower cylinder, the air source pushes the piston, causing the shaft to rotate and drive the valve disc, that is, the valve disc closes and the medium stops passing through the valve

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.