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upgraded equivalent to the M122A01
The P74AA-1 functions as an SPST switch that opens on a rise in pressure difference
head pressure management
the 803005073 relay board features a 24VDC coil with contact ratings of 3A at 300VAC/30VDC
Field Adjustability: Features an adjustable start point (zero) and operating range (span) to match specific controller outputs
Lochinvar & A.O. Smith 100111921 Relief Valve 319825-402 upgraded equivalent to the M122A01The Lochinvar and A. O. Smith 100111921 Relief Valve is a critical safety component designed for high efficiency commercial boilers and water heaters. Engineered to meet strict ASME Section IV requirements, this pressure relief valve protects the heat exchanger and plumbing system from over pressurization by opening at its specific factory set PSI. This genuine OEM replacement part replaces older part numbers including 100111921 and RLVAL2409,
US$ 179.99
US$ 138.99
US$ 194.99
US$ 10.00
US$ 11.96
US$ 30.99
US$ 29.95
US$ 12.50
US$ 37.99
