AIR RELIEF VALVE WTRCO MACHINE

Hayward IR Relief Valve WTRCO Machine (sometimes referred to more generally as an air-relief valve for a pool/spa filter) is a safety and maintenance component for a filtration system. Its main role is to release trapped air from the filter tank when the system is first filled or restarted, or whenever air accumulates during operation. By venting that air, it helps prevent airlocks — which can interfere with proper water flow — and reduces the risk of pressure buildup inside the filter housing that could damage the system or impair filtration performance. The valve is designed to seal tightly (usually with an O-ring) once water — instead of air — begins to discharge, ensuring a leak-free and stable seal during normal operation. Because trapped air can reduce filter efficiency and stress pumps/hoses, having a properly functioning air-relief valve is important for safe, efficient, and reliable pool or spa maintenance.