Tecmark Vacuum Switch [Cal Spas] [Replaces V4001P-DX] (V4003P-DX) cords A spring like this is

A spring like this is useful because it helps the bypass mechanism move and respond the way the heater was designed to operate

The 005305F is a practical service part when a compatible Raypak heater needs a louvered jacket top to restore cabinet protection and appearance

Supports flow alignment

Union design supports easier removal and service

but it often stops feeling dependable as a complete system

Tecmark Vacuum Switch [Cal Spas] [Replaces V4001P-DX] (V4003P-DX) cords A spring like this isThe 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