... and sensitivity 2.switch for gas water heater 3.Customer-specified set-point range 4,global safety Air pressure switch for gas water heater ,Gas boiler and other gas ... spacing10Electric Appliance Lifespan100,000times11Machine Lifespan1000,000times12Install wayDiaphragm and horizontal plane verticalTest way13Contact point materialSilver alloy ... serial number Air pressure switch for gas water heater