Classification Of Check Valves
Sep 13, 2023
The opening and closing parts open or close on their own by the force of medium flow to prevent the medium from flowing back. The valve is called a check valve. Check valves are automatic valves and are mainly used on pipelines with one-way flow of media. They 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 valves are divided into two types: vertical and horizontal.
2. Swing check valves are divided into three types: single-disc type, double-disc type and multi-disc type.
3. The butterfly check valve is straight-through.
The above check valves can be divided into four types of connection forms: threaded connection, flange connection, welded connection and clamping 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-disc check valve
