Penglai Huande Steel Valve CO., LTD.

The Brief Introduction of Single Swing Check Valve

Single swing check valves, also known as check valves or check valves, are designed to prevent backflow of media in the line. The opening and closing parts are opened or closed by the medium flow and force. A valve that prevents backflow of the medium is called a check valve. The check valve is an automatic valve type, mainly used for the one-way flow of the medium, only allowing the medium to flow in one direction to prevent accidents. This type of valve should generally be installed horizontally in the pipeline.


1 The single swing check valve should be stored in a dry and ventilated room to prevent moisture, rain and rust.

2 When the monthly transportation is carried out, the opening and closing parts should be in the closing device, and the following work should be done:
a. The valve flap should be fixed in the open position
b. The inner mouth of both ends of the path is blocked by the foam board, and the port must be tightly closed with a smothering cover to protect it from dust and rust, to keep the channel clean and the end surface flat;
c. Appropriate packaging protection, shockproof and anti-collision;
d. The valve should be placed in a stable position with the pneumatic drive facing up and not subject to each other.

3 Regularly check when standing for a long time. Every three months, check the dirt and rust on the two channels, the sealing surface, and the protection status of the welded joint. After wiping the dirt and rust, re-apply the anti-rust oil to protect it.

Installation and use

1 The extraction check valve is installed vertically on the horizontal pipe, and its use is generally in the fully open state.

2 The single swing check valve should be installed on the horizontal pipe preferentially, or on the vertical pipe moving from the bottom to the top of the pipe.

3 The following work should be done before installation.
A. Remove the cover and foam board at both ends of the valve passage to clean the inner cavity and remove grease.
B. Peel off the oil paper on the surface of the valve flap to remove grease on the valve surface;

4 The flow direction of the media must be limited during installation.

5 The medium passing through the pipeline should not have hard particles to avoid damage to the sealing surface.

6 The valve is inspected and tested one by one before leaving the factory. The installation unit can be directly tested by pressure or installed.

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