Tecmark Vacuum Switch [Cal Spas] [Replaces V4001P-DX] (V4003P-DX) waterlevelers That approach often improves both

That approach often improves both confidence and overall service quality

The 600889B is a practical service part when a compatible Raypak heater needs an auto reset 13-B thermostat to restore dependable thermal-control support

The white finish helps the visible side of the repair stay bright and easy to blend into many spa interiors

A properly selected topside helps support cleaner replacement fit

Designed for compatible inlet fitting flow control

Tecmark Vacuum Switch [Cal Spas] [Replaces V4001P-DX] (V4003P-DX) waterlevelers That approach often improves bothThe 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