Coates Heater 3P Contactor [40A] [208v] (21001000) watertestkits CMP generic slide valve piston

CMP generic slide valve piston assembly with handle

or no longer functioning dependably

and this Magic Plastics Smart Check version is a 1 inch slip model with a 1/2 pound water setting using the 0821-10C reference

A fresh replacement can improve both function and presentation

Coates Heater 3P Contactor [40A] [208v] (21001000) watertestkits CMP generic slide valve pistonA contactor helps switch electrical power to the heater in a controlled way, and this Coates 3 pole contactor is designed for compatible 40 amp, 208 volt applications where the original component has worn contacts, failed coil operation, or become unreliable. When a main switching device begins to fail, the heater can lose dependable power control. The 3 pole design, 40 amp rating, and 208 volt relationship give this part practical value because