Lochinvar Water Pressure Switch Kit [EnergyRite Heater] (100166256) ozone The 5/16 inch cross-section gives

The 5/16 inch cross-section gives this O-ring practical value because very large assemblies often require more sealing mass than a standard profile can provide

Hayward O-ring

When the original cartridge becomes loaded

The Waterway 310-3660 impeller is designed for compatible 1

Lochinvar Water Pressure Switch Kit [EnergyRite Heater] (100166256) ozone The 5/16 inch cross-section givesThe Lochinvar water pressure switch kit is designed for compatible EnergyRite heater applications where water pressure monitoring and safety control need replacement. A pressure switch kit is useful because it helps verify proper water conditions, supporting safer heater operation and more dependable system performance. This replacement is especially useful when the original switch is inaccurate, damaged, unresponsive, or no longer activating