By accurately signaling the defrost control board

Are there any cross-reference parts for the C340056P19

While humming is often caused by a faulty solenoid coil or debris

the ANSI 250 rating and stainless steel trim make this unit highly effective for saturated steam applications

it provides precise flow regulation without the need for a minimum pressure differential to operate

Hubbell Industrial Controls 69WH6 Pressure Switch 326058-758 By accurately signaling the defrostThe Hubbell Industrial Controls 69WH6 is a professional grade HI GARD pressure switch engineered for critical high pressure limit protection in commercial and industrial water systems. As a veteran preferred well pump pressure switch, this unit is designed to be wired in series with a standard control switch, acting as a failsafe that opens the contacts and cuts power to the motor once a preset maximum pressure is reached. Rated for heavy duty 5 HP at