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63" WC Pressure Switch designed specifically to monitor the pressure differential across the heat exchanger
this assembly is strictly for natural gas water heaters
Whether you are performing a field replacement or a new system calibration
Its robust internal pilot construction facilitates rapid response times
To ensure the longevity of the fan condenser motor 1172162
McDonnell & Miller 69 Cut Off Refrigerant 63" WC Pressure Switch designedThe McDonnell & Miller 153900 (Series 69) is a professional grade mechanical low water cut off designed for reliability in low pressure steam boiler applications. This auto reset unit features a 4 1 8" insertion length and is engineered for mounting directly into 2 1 2" NPT boiler side tappings, making it compatible with residential and commercial boilers of any steaming capacity. By utilizing a packless bellows and a dual switch assembly, this