Hayward Jandy Valve Neverlube, 1-1/2"s/2"spg Pos Seal, 3 Port (4715) waterlevelers Relays are useful because they

Relays are useful because they support dependable electrical switching in control systems where direct manual switching is not the intended solution

Useful for serviceable threaded plumbing transitions

and this Flo Control valve is designed with 2 inch slip connections and a 1/2 pound spring rating using the 1700C20 reference

Useful for rebuilding a serviceable valve body

A gasket in this position is useful because it helps maintain the seal between the sump body and surrounding components

Hayward Jandy Valve Neverlube, 1-1/2"s/2"spg Pos Seal, 3 Port (4715) waterlevelers Relays are useful because theyThe Hayward Jandy NeverLube positive seal 3 port valve is designed for compatible pool and spa plumbing applications where controlled water diversion is needed. A 3 port valve is useful because it helps direct water flow between multiple plumbing paths, supporting system control for filtration, heating, features, or spa and pool circulation. This replacement is especially useful when the original valve is cracked, leaking, stiff, or no longer turning