2 psi DTEC-1 Pressure Switch suits most pressure switch applications that use a 1/8″ NPT thread. Very common switch. Original ones had a red bottom. New style has stainless steel nipple.
Replaces TP-8320, 34-0178C-K, 510AD0167, 510AD0173, 510AD0249, 510AD0250 and many other pressure switches that need 2psi or less to activate.