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normally closed body is constructed from forged brass to withstand the rigors of commercial and residential heating systems
mechanical joints in refrigerant lines
180 BTU/hr
Its compact footprint allows for easy installation in tight mechanical headers and cabinet enclosures
Most failures result from a secondary short circuit
McDonnell & Miller FS7-4W Snap Switch THPU32HP7Y normally closed body is constructedThe McDonnell & Miller FS7 4W (Part Number 120201) is a heavy duty industrial liquid flow switch engineered for high demand hydronic and process applications requiring a NEMA 4X enclosure. This unit features a 1 1 4" NPT connection and is designed with a brass body and sealed tube construction to isolate the SPDT snap switch from the process fluid. Rated for a maximum pressure of 300 PSI and fluid temperatures up to 300F, it provides high reliability