Waterway 1" air control valve plunger

This small piece is the internal plunger component of the Waterway 1" air control valves, like the 6-Spoke style and the Classic, among others.

It will only fit the Waterway 1" air control valve and no other valves.

Waterway part numbers
Complete assembly : 665-4390, 665-4398
Black part : 662-2140