Len Gordon Genuine Universal 21Amp 1/8 Inch NPT SPDT Pressure Switch 800120-3

Universal 21 Amp 1/8 Inch NPT connection SPDT 1-5PSI pressure switch 800120-3. 

This switch can even carry the full heater load up to 21 amps.

This universal pressure switch replaces most any standard hot tub pressure switch for all the way up to 5.5kw heaters.

Need compression fittings? get the other universal pressure switch 800120-0 that comes with pressure fittings.

Pilot duty heater contactor control or full heater load operation.

Need teflon tape? Best to wrap the threads of the pressure switch with teflon tape to assure a good seal at the pressure switch tap on the heater manifold.