McDonnell & Miller FS7-4W Snap Switch THPU32HP7Y Manual Override Control: The concealed

Manual Override Control: The concealed HOA switch provides local "Hand" or "Off" operation for testing fans and pumps

180 BTU/hr

Most failures result from a secondary short circuit

normally closed body is constructed from forged brass to withstand the rigors of commercial and residential heating systems

mechanical joints in refrigerant lines

McDonnell & Miller FS7-4W Snap Switch THPU32HP7Y Manual Override Control: The concealedThe 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