Common classification of check valve

Common classification of check valve

The valve that opens closes by the force of the medium flow to prevent the backflow of the medium is called a check valve. The check valve belongs to the automatic valve category, which is mainly used in the pipeline the medium flows in one direction, only allows the medium to flow 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 butterfly check valve:

1. The lift check valve is divided into two types: vertical horizontal.

2. The swing check valve is divided into three types: single-lobe type, double-lobe type multi-lobe type.

3. The butterfly check valve is a straight-through type.

The above types of check valves can be divided into four types: threaded connection, flange connection, welded connection wafer 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

2.DRVG silent check valve

3.NRVR silent check valve

4.SFCV rubber flap check valve

5.DDCV double flap check valve