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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
this mechanical expansion valve regulates flow by monitorng suction line temperature and pressure via a factory-calibrated sensing bulb
this unit is specifically designed for Burnham boiler wiring harnesses
Featuring a 7/8" ODF connection
making it an essential diagnostic replacement for sticking contacts or failed start-cycle regulation
Standard 1/2-inch hub allows for direct mounting to most residential condenser motors
Watts F274751 Valve 318973-401 this mechanical expansion valve regulatesThe Watts F274751 174A flow switch is a 3 4" liquid flow control device designed for HVAC, boiler, hydronic heating, chilled water, and industrial fluid system applications. Commonly referenced as the Watts 174A flow switch, this unit is used to monitor fluid movement and activate or deactivate connected equipment based on system flow conditions. The 125 FS configuration is widely applied in circulation systems where dependable flow proving is
US$ 61.95
US$ 55.00
US$ 1549.99