China Plastic Check Valve Manufacturer

PVC swing check valve

Size:25-200mm or 3/4″-6″



Working Pressure:150PSI

Lead time: 30 days around

Package: Cartons Box

Seal: EPDM

Port: Ningbo or Shanghai

Place of origin: China

Products Description

The PVC swing check valve is considered an automatic valve.A PVC swing check valve automatically operates based on the pressure differential between the upstream and downstream sides of the pipeline. It is designed with a swinging disc or flap that pivots to open when the fluid pressure on the upstream side is high enough and naturally closes when this pressure drops or when flow reverses. This pressure-driven mechanism is essential for preventing backflow in systems like swimming pools, water treatment facilities, and irrigation setups. By doing so, it helps to avoid potential contamination or damage that could occur if water were allowed to flow backward through the system.

PVC swing check valve Features

PVC Material: Constructed from polyvinyl chloride (PVC), these valves are particularly resistant to corrosion and chemical degradation. PVC’s durability makes it an ideal choice for environments exposed to chlorine, such as swimming pools, and other chemicals found in industrial or municipal water treatment processes.

Swing mechanism: The PVC swing check valve uses a swing disc or baffle that rotates around a hinge or pin in the valve housing. The disc opens during forward flow and swings closed when the flow stops or reverses, effectively preventing backflow.

Easy to install: Valves are designed for easy installation, often with sockets or threaded connections that match standard PVC piping systems. Their lightweight nature allows for quick and straightforward installation without the need for heavy equipment. There is an arrow indicating the direction of fluid flow on the valve. Please install it according to the direction of the arrow when installing, otherwise the valve will not work properly.

Automatic operation: The valve operates automatically based on the pressure differential across it. It opens under the pressure of forward flow and closes when flow stops or reverses, using gravity and back pressure to seal backflow.

Specification of Material

PVC swing check valve Structure diagram
NO. Part Material
1 Bottom Body UPVC
2 Shaft M-PVC
3 Body Seal EPDM
4 Flapper M-PVC
5 Inside Steel 45# Steel
6 Cap UPVC
7 Seat Seal EPDM
8 Upper Body UPVC
9 Flow Arrow UPVC
10 Bolt Sets SUS304/316 Stainless steel

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