McDonnell & Miller FS7-4W Snap Switch THPU32HP7Y normally closed body is constructed

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

mechanical joints in refrigerant lines

it eliminates the mounting and shaft alignment issues common with generic HVAC blower motors

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

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