Tecmark Pressure Switch [3010P 1/8" MPT SPNO] (3010P) productsunlimited Useful when the original O-ring

Useful when the original O-ring is flattened

and this Perma Cast version is designed for rope sizes from 1/4 inch to 1/2 inch using the PH-55 reference

A straight-body check valve is useful where the system needs reliable one-way flow control without introducing an unnecessary turn in the line

1-1/2 inch insider fit with 2-3/8 inch face diameter

Tecmark Pressure Switch [3010P 1/8" MPT SPNO] (3010P) productsunlimited Useful when the original O-ringTecmark Pressure Switch [3010P 1 8" MPT SPNO] (3010P) is a Tecmark replacement pressure switch used in compatible spa and hot tub control systems. Pressure switches help monitor water flow or pressure conditions so equipment can operate with the intended safety logic and control response. A failing or mismatched pressure switch can contribute to heating errors, equipment interruptions, or unreliable system operation. This replacement is intended for