Key Benefits for Technicians Direct OEM Compatibility: Specifically designed to replace the 040-0163-01

Is a vent limiter required when using this high-pressure spring

When performing a teardown or routine fluid service on York centrifugal chillers or industrial condensing units

For high-performance HVACR control

McDonnell & Miller FS1-J Switch 30067439-890 Key Benefits for Technicians DirectThe McDonnell & Miller FS1 J (Part Number 113550) is a high sensitivity in line liquid flow switch designed for precision monitoring in systems with low flow rates. Featuring a 1 2" BSPT connection, this model is engineered for applications where early detection of flow or no flow conditions is critical to protecting equipment like chillers or high efficiency boilers. The snap acting SPDT switch provides reliable electrical signaling, allowing for