Is this gauge compatible with hot water boilers

Constructed with a rugged bronze body

ensuring structural rigidity during high-torque spring return cycles

Engineered as a high-durability OEM replacement part

Precision Calibration: High-visibility chemical element provides accurate color transition even at elevated temperatures and low moisture concentrations

Schneider Electric (Square D) 9013FHG2J27M1XZ22 Pressure Switch Els PW 17895 Is this gauge compatible withThe Schneider Electric (Square D) 9013FHG2J27M1XZ22 Pressure Switch is a heavy duty electromechanical solution engineered for controlling small electrically driven air compressors. This Pumptrol pressure switch operates with a fixed differential, factory set for a cut in at 80 PSI and a cut out at 100 PSI. Built for long term reliability in industrial environments, it features a 2 pole DPST (Double Pole Single Throw) contact configuration with 2 NC