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, chemical processing, and HVAC equipment to protect pumps and other components from dry running or insufficient flow.

The GEMS SENSORS 170234 (FS-500) is a polypropylene piston flow switch with 3/4 in FNPT connections. It has a fixed set point, normally open switch position, and a DC contact rating of 20 V. The body material is polypropylene, making it suitable for a range of non-corrosive liquid media.

You can source the GEMS SENSORS FS-500 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 supply genuine GEMS SENSORS components for international procurement.

Install the GEMS SENSORS piston flow switch in a horizontal pipe section with the arrow on the body aligned to flow direction. Use PTFE tape on the 3/4 in FNPT threads to ensure a leak-free seal. Wire the normally open contacts to your control circuit; the switch closes when flow reaches the fixed set point. Always consult the manufacturer's manual for specific torque and electrical ratings.