Tecmark Low Volume Switch (TBS311A) aquacal A tube like this is

A tube like this is useful because it helps communicate system pressure conditions to the switch

the filtration system can no longer perform as steadily as it should

and 183A heater applications using LP gas in an MV configuration

Supports a cleaner repair than replacing the full pump

Tecmark Low Volume Switch (TBS311A) aquacal A tube like this isTecmark Low Volume Switch (TBS311A) is a Tecmark replacement air switch or control switch component for compatible spa, bath, and equipment control applications. These switches are commonly used where pneumatic control, latching action, momentary operation, or sequencing functions are part of the system design. Replacing a worn or failed switch can help restore dependable response from pumps, blowers, lights, or other connected equipment when the