Pn16 Cast Iron Air Cushion Swing Check Valve

PN16 Cast Iron Air Cushion Swing Check Valve

4. Structural characteristics of swing check valve

1. Short structural length, its structural length is only 1/4~1/8 of the traditional flange check valve 2. Small size and light weight, its weight is only 1/4~1/20 of the traditional flange check valve 3 . The valve disc closes quickly and the water hammer pressure is small. 4. It can be used in horizontal or vertical pipelines and is easy to install. 5. The flow channel is smooth and the fluid resistance is small.
6. Sensitive action and good sealing performance
7. The valve disc stroke is short and the valve closing impact is small.
8. Overall structure, simple and compact, beautiful appearance
9. Long service life and high reliability

Functional principle and structural description of swing check valve
1 Principle of action: Through the up and down movement of the cylinder plug, it assists the valve disc to open and close quickly to reach the sealing surface.
2 Structural Description A Structural form: swing single valve B Driving method: butt welding connection C Connection form: butt welding connection D The opening and closing of the valve are controlled by a pneumatic device to speed up the opening and closing of the valve. ​
6. Maintenance, maintenance, installation and use of swing check valve (1) Maintenance and maintenance 1. The swing check valve should be stored in a dry and ventilated room to prevent moisture, rain and rust. 2. The opening and closing parts should be in the closing device during storage and transportation, and the following work should be done at the same time: a. The valve disc should be fixed in the open position. b. The inner ports at both ends of the diameter should be blocked with foam boards, and the ports must be sealed with stuffy caps to prevent Dust and rust prevention, keep the channel clean and the end face smooth; c. The cylinder part should be properly packaged, protected, shock-proof and anti-collision; d. The valve should be placed stably, with the pneumatic driving device facing upwards, and not crowded with each other. ​
3. Regular inspections should be carried out when stored for a long time. Every three months, check the dirt and rust on the two channels and sealing surfaces, and the protection status of the welding joints. After wiping off the dirt and rust, re-apply anti-rust oil for protection.

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