Tecmark Pressure Switch [3903-DF Adj SPST] (3903-DF) NuWhirl The Waterway 805-0000 main tank

The Waterway 805-0000 main tank body O-ring is designed for compatible Crystal Water system applications where sealing around the main tank body is critical

Useful when replacing a failed original motor while keeping the pump assembly

and this generic version is sized with a 5-7/8 inch inside diameter and 3/16 inch cross-section using the 360-VT75BR reference

Supports proper matching with S

Replacement trap body for select Speck pump and leaf trap assemblies

Tecmark Pressure Switch [3903-DF Adj SPST] (3903-DF) NuWhirl The Waterway 805-0000 main tankTecmark Pressure Switch [3903 DF Adj SPST] (3903 DF) 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