Lochinvar & A.O. Smith 100073333 Kit 318973-401 Its durable brass body and

Its durable brass body and precision-machined internal components prevent bypass leakage

including the Evolution Series EV-2000 and EV-2000S

Optimized 120V performance delivers consistent ignition cycles in high-efficiency furnaces

Engineered to replace legacy components like the LH33WZ002

the flow should be directed from Port B to Port A to ensure the paddle closes against the direction of flow

Lochinvar & A.O. Smith 100073333 Kit 318973-401 Its durable brass body andThe Lochinvar & A. O. Smith 100073333 Kit is a specialized FTX HI LOW PRESSURE SWITCH KIT engineered for precise gas pressure monitoring in FTX600 850 heating systems. This OEM certified kit includes both high gas pressure switch and low gas pressure switch components, providing a critical failsafe to protect the boiler heat exchanger and combustion assembly from erratic supply pressures. Featuring a manual reset mechanism, the 100073333 ensures that