Tecmark Vacuum Switch [Cal Spas] [Replaces V4001P-DX] (V4003P-DX) waterlevelers Supports cleaner replacement fit in

Supports cleaner replacement fit in single-pump systems

That approach often improves both confidence and overall service quality

A properly selected topside helps support cleaner replacement fit

The Hayward exhaust-side gasket kit is designed for compatible Low NOx heater applications where the sealing components on the exhaust side need renewal

Replacement may be needed when the original valve assembly is worn

Tecmark Vacuum Switch [Cal Spas] [Replaces V4001P-DX] (V4003P-DX) waterlevelers Supports cleaner replacement fit inThe Tecmark vacuum switch is designed for compatible Cal Spas applications and serves as a replacement for V4001P DX. Vacuum switches are useful because they help the system respond appropriately to vacuum conditions that are part of normal operating or protection logic. This replacement is especially useful when the original switch is no longer sensing vacuum correctly, becomes intermittent, or has failed entirely. Using the designated replacement