Check valve type

- Oct 31, 2018-

The opening and closing parts open or close by themselves with the force of the medium flow to prevent the medium from flowing backward is called a check valve. Check valves belong to automatic valves, mainly used for one-way flow of media on the pipeline, only allowing the flow of media in one direction to prevent accidents.

Structural classification

According to the structure, it can be divided into three types: lift check valve, swing check valve and butterfly check valve.

1. lift check valves are divided into two types: vertical and horizontal.

2. swing check valve is divided into three single valve, double valve and multi valve type.

3. butterfly check valve is straight through.

The above several kinds of check valves can be divided into thread connection, flange connection, welding connection and clamp connection.

Material classification

1. cast iron check valve

2. brass check valve

3. stainless steel check valve

4. carbon steel check valve

5. forged steel check valve

Functional classification

1.DRVZ silent check valve


Stainless steel check valve

Stainless steel check valve

Silent check valve

3.NRVR silent check valve

4.SFCV rubber flap check valve

5.DDCV double valve check valve