Tecmark Pressure Switch [4037P SPST 1/8" MPT] (4037P) NuWhirl A well-selected unit should preserve

A well-selected unit should preserve the original operating feel of the system rather than forcing a compromise that only partly fits the application

A four-button topside panel is often the right balance between simplicity and everyday control

Installing the correct Pentair/Sta-Rite basket can help restore dependable trap function and improve routine maintenance at the pump

In a VS520SZ system

Tecmark Pressure Switch [4037P SPST 1/8" MPT] (4037P) NuWhirl A well-selected unit should preserveTecmark Pressure Switch [4037P SPST 1 8" MPT] (4037P) 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