Lochinvar & A.O. Smith 100109951 Pressure Switch 340155-7026 its wrot copper construction is

its wrot copper construction is specifically designed for brazing in ACR applications and is compatible with standard silver-bearing alloys

This 1/2" backflow repair kit includes a complete second check assembly and a high-performance cover O-ring to facilitate a seamless field service without the need for specialized tools

Enhanced System Safety: The 250F manual reset prevents the furnace from cycling automatically after a high-heat event

The Danfoss 120Z0459 Crankcase Heater is a critical PTC crankcase heater designed to prevent refrigerant migration and ensure reliable compressor lubrication during off-cycles

67M53 is identical to 67M5301

Lochinvar & A.O. Smith 100109951 Pressure Switch 340155-7026 its wrot copper construction isWhen you are troubleshooting a pressure switch failure on a high efficiency hydronic system, the Lochinvar & A. O. Smith 100109951 is the specific OEM replacement part required to restore precise combustion air pressure monitoring. This air pressure switch is factory calibrated for the BTN 200 366 series water heaters and boilers, ensuring that the blower is moving sufficient air for safe ignition. As a normally open (NO) switch with a set point of 2.