Check Valves: Controlling Flow Direction

As an authorized Hayward distributor since 2001, we have helped customers select the proper check valve style for thousands of chemical, water and industrial applications. Hayward offers four main check valve designs, each with distinct advantages.

What is a Check Valve?

A check valve enforces one-way flow. Common uses include maintaining pump prime, protecting equipment from backflow, reducing water hammer on pump startup, and preventing loss of fluid through spray nozzles when the pump stops.

Hayward Check Valve Types and Best Uses

1. Ball Check Valves (PVC, CPVC, PP, PVDF)
Best for clean, non-viscous fluids with at least 2 PSI of system backpressure. Simple, reliable and low cracking pressure.

2. Y Check Valves (PVC, CPVC, PVDF)
Preferred for dirtier or higher-viscosity liquids. Spring-assisted models allow adjustable cracking pressure (2–15 PSI) and can be serviced without removing the valve body from the line. True union versions are also available.

3. Swing Check Valves (PVC, CPVC, PP)
Ideal for larger pipe sizes and higher flow rates. Can be fitted with limit switches or counterweights for faster closure. Full-body style provides low pressure drop.

4. Wafer Check Valves (PVC)
Excellent choice when space is limited or when solids may be present. Optional stainless steel or Hastelloy springs assist closure. Very compact between flanges.

All Hayward check valves are non-alloy construction and offer excellent chemical resistance. They are designed for liquid service only.

Which style is right for your fluid and piping system? Call us at 908.362.9981 and we will help you choose the optimal design, material and cracking pressure.