GEMS SENSORS Liquid Flow Switch: Piston, PPS, 9/16 in UNF, 9/16 in Connection Size, UNF

The GEMS SENSORS FS-4 liquid flow switch is used to detect flow or no-flow conditions in industrial piping systems. It is commonly applied in water treatment, cooling systems, and process control to trigger alarms or shut down equipment when flow stops, protecting pumps and other assets.

The GEMS SENSORS FS-4 is a general purpose piston flow switch with a fixed set point and normally closed switch position. It has a 20 V DC contact rating, SPDT switching, a PPS body, and a 9/16 in UNF connection size. The manufacturer part number is FS-4, 122352.

You can source the GEMS SENSORS FS-4 flow switch through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide reliable sourcing for this GEMS SENSORS model.

Install the GEMS SENSORS piston flow switch in a vertical or horizontal pipe section with flow in the direction indicated on the body. Ensure the 9/16 in UNF connection is properly sealed with thread tape. Wire the SPDT contacts according to your control circuit, and verify the fixed set point matches your system requirements.