Tecmark Universal Pressure Switch 3902 1A SPNO 1/8 Inch NPT 1-5 PSI

Tecmark 3902 universal pressure switch for almost any hot tub heater. 1A SPNO 1/8 Inch NPT 1-5PSI Pressure Switch 3902 or TEC3902.

This universal pressure switch works in almost any hot tub application.

This one is a low profile pressure switch to fit into most spa heaters. 

The exception is the Gecko style heater that has a black box on top and the pressure switch is under it.  These require an even smaller switch - see our Pressure Switch for Gecko black box style heaters.

This Series 3000 pressure switch is durable and rated at 1 amp.  Rated 1-5 psi with plastic thread/pan material.  SPNO means single pole normally open.  The connection is mpt (male pipe thread), mnpt (Male national pipe thread).

These universal pressure switches are made by Tridelta/Tecmark.

Also replaces models 34-0178 , 3902 , 47-319-1199 , 52686 , TEC3902 , 6200-170C.

• Elastomeric diaphragm eliminates the need for an oil barrier
• Insulators designed to protect against direct exposure to live parts
• Field adjustable pressure set points.

Width 2-2 1/4 inches, height 3 inches.

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.

This type of pressure switch found in numerous spa models including Hawkeye and replaces Caldera 71586 and WAT71586.
Universal switch can also replace 3903-DF or 3903.

Need a physically smaller switch? See 510AD0249