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this differential air switch is designed to sense positive
The MARS 12166 is manufactured to a +/- 6% tolerance
the governor likely needs replacement
a short in the 24V control circuit or a seized contactor coil causes excessive current draw
maintaining the manufacturer's original safety ratings
Watts 0556032 Valve Els PW 17895 this differential air switch isThe Watts 0556032 (Series LF3L) is a high performance lead free pressure relief valve designed specifically for the protection of domestic storage tanks and tankless water heaters. This 3 4 inch poppet type relief valve serves as the direct updated replacement for the Watts 0011086, ensuring modern compliance with lead free mandates. Constructed with a lead free copper alloy body and a corrosion resistant stainless steel spring, it is factory set to