Classification Of Check Valves

The opening and closing parts are opened or closed by the force of the medium flow to prevent the backflow of the medium. The valve is called a check valve. Check valves belong to the category of automatic valves, and are mainly used on pipelines with one-way flow of medium, and only allow 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 and butterfly check valve:
1. Lift check valve is divided into two types: vertical and horizontal.
2. Swing check valves are divided into three types: single flap, double flap and multi flap.
3. The butterfly check valve is a straight-through type.
The connection forms of the above check valves can be divided into four types: threaded connection, flange connection, welding connection and 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 disc check valve
5. DDCV double disc check valve