Pres Air Trol TinyTrol SPDT Momentary Air Switch (ATM111A) inletoutlet An impeller is useful because

An impeller is useful because it is one of the core working parts that drives water movement through the pump

Replacement ready

That helps restore the safety function with a direct replacement

Supports more complete assembly replacement

A jet internal is useful because it helps shape the water delivery pattern inside the spa jet assembly

Pres Air Trol TinyTrol SPDT Momentary Air Switch (ATM111A) inletoutlet An impeller is useful becauseThe PresAir Trol TinyTrol SPDT momentary air switch is intended for compatible pneumatic systems that depend on a brief, non latching single pole switching response. In applications like these, the right switch helps preserve both the timing and feel of the control function. This replacement is especially useful when the original switch has failed, become sluggish, or no longer returns properly after receiving an air signal. Replacing it with the