Weathermatic 1" Nitro Valve 110-603SA

Weathermatic 110-603SA 1" Nitro Valve

Weathermatic 110-603SA Nitro valve diaphragm Part 110-603SA is the replacement diaphragm for the 1 in. Weathermatic Nitro valve. It is the rubber part, not a whole valve. Swap it when a valve weeps, will not seal, or passes water with the solenoid off. Specifications Part type Replacement diaphragm (not a complete valve) Fits 1 in. FIPT Weathermatic Nitro / Silver Bullet valve Pressure Leak-free to 150 psi (parent Nitro valve rating) Ports Self-cleaning, resist sand and silt clogging How to replace it Shut off water and cut controller power to the zone. Unscrew the bonnet and lift the old diaphragm out. Seat the 110-603SA with the spring and vent hole in place. Hand-tighten the bonnet, then power up and test the zone. Bad coil instead of a torn diaphragm? Replace the Weathermatic S20PSA solenoid instead.