Cal Spa V4003P-DX replacement vacuum switch. The vacuum switch is to actuate at 300 inches of water in the Cal Spa system. Direct from manufacturer.

Presair’s V4003P-DX replacement switch makes electrical contact when a certain set vacuum has been reached on its input.

Our mechanical vacuum switches are available in multiple styles including adjustable vacuum switches or fixed set point vacuum.

By providing on/off switching from a pneumatic source, Presair vacuum switches deliver critical benefits:

• Safe and Convenient: Remote operation with complete electrical isolation. UL Recognized.
• Economical: Costs less than conventional controls
• Accurate: Highly stable with good repeat accuracy. All switches are 100% tested at high and low settings and at proof vacuum.
• Reliable: Minimal moisture absorption and maximal dimensional stability.