Herga Air Switch [4 Function] [3PDT] [20A] [Ctr Spout] [Wht Cam] (59-345-3120) air switch Useful when original heater assemblies

Useful when original heater assemblies are worn or failing

When a relay no longer switches reliably

An impeller like this is useful because it serves as the pump’s primary water-moving component

or underperforming valves

Herga Air Switch [4 Function] [3PDT] [20A] [Ctr Spout] [Wht Cam] (59-345-3120) air switch Useful when original heater assembliesAn air switch helps translate pneumatic activation into electrical control changes in a compatible system, and this Herga Electric version is a 4 function 3PDT model rated at 20 amps with a center spout and white cam configuration using the 59 345 3120 reference. Switches like this are useful because they support multi function control without requiring direct electrical switching at the user button location. This part has practical value because the