Pentair Sta-Rite System 3 21"/25" Drain Fitting (24900-0505Z) spafilters The 100166258 is a practical

The 100166258 is a practical service part when a compatible Lochinvar heater needs an air pressure switch to restore dependable monitoring support

The Waterway 310-3660 impeller is designed for compatible 1

The Nidec US Motors line is particularly useful for buyers who want a familiar replacement-motor platform with predictable frame compatibility

Useful when original cables are damaged or too worn to trust

Pentair Sta-Rite System 3 21"/25" Drain Fitting (24900-0505Z) spafilters The 100166258 is a practicalThis drain fitting supports Sta Rite System 3 21 inch and 25 inch filter models that require a reliable drain connection for service. Drain fittings are central to clean, controlled water removal during cartridge cleaning, pressure relief, and seasonal shutdown. A damaged fitting can lead to leaks or make filter maintenance more frustrating than it needs to be. Compatible with select 21 inch and 25 inch System 3 filters Provides a serviceable drain