Hayward Ball Check Valves

Hayward ball check valves are a simple and effective solution for preventing backflow in piping systems. They feature a free-moving ball that seals against an elastomeric seat when reverse flow occurs.

How Ball Check Valves Work

When flow enters the valve, it pushes the ball off the elastomeric seat, allowing fluid to pass around the ball and through the outlet with very low differential pressure. When the pressure on the outlet side exceeds the inlet pressure, the ball is forced back against the seat, sealing the valve and preventing reverse flow.

Key Advantages

• Very low cracking pressure (minimal pressure needed to open the valve)
• No spring — simple and reliable design
• Effective in vertical piping installations
• Helps keep centrifugal pumps primed by preventing backflow into tanks
• Minimal maintenance required

Common Applications

• Preventing backflow when centrifugal pumps shut down
• Keeping pump suction lines primed when drawing from tanks
• Vertical piping runs where gravity could cause reverse flow
• General backflow prevention in water and chemical systems

Materials

Hayward ball check valves are typically available in PVC and CPVC bodies with EPDM or FPM (Fluorocarbon) seats and seals, offering good chemical compatibility for many water, wastewater, and light chemical applications.