GEMS SENSORS Liquid Flow Switch: Piston, Polypropylene, 3/4 in FNPT, 3/4 in Connection Size

The GEMS SENSORS FS-500 is a general purpose piston flow switch used to detect liquid flow or no-flow conditions in industrial piping systems. It is commonly applied in water treatment, HVAC, and process control to protect pumps and equipment from dry running or low flow.

The GEMS SENSORS FS-500 is a fixed set point, normally open piston flow switch with a polypropylene body and 3/4 in FNPT connections. Its DC contact rating is 20 V. The manufacturer part numbers are FS-500 and 175117. It is designed for general purpose liquid flow monitoring.

3G Electric supplies the GEMS SENSORS FS-500 flow switch worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this model globally.

Install the GEMS SENSORS piston flow switch in a horizontal pipe section with the arrow on the body aligned with flow direction. Use PTFE tape on the 3/4 in FNPT threads to prevent leaks. Wire the normally open contacts to your control circuit. Always verify the set point and test operation before commissioning.