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

The GEMS SENSORS FS-500 (MPN 170235) 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 trigger alarms or control pumps when flow stops or starts.

The FS-500 has a polypropylene body with 3/4 in FNPT connections, a fixed set point, and a normally open switch position. Its DC contact rating is 20 V. This GEMS SENSORS model (part number FS-500, 170235) is designed for general purpose liquid flow monitoring in industrial environments.

3G Electric supplies the GEMS SENSORS FS-500 (170235) flow switch to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact our team for a quote and lead time on this polypropylene piston flow switch with 3/4 in FNPT connections.

Install the FS-500 in a vertical or horizontal pipe section with flow direction matching the arrow on the body. Use PTFE tape on the 3/4 in FNPT threads and ensure the piston moves freely. Wire the normally open contacts to your control circuit rated for 20 V DC. Test flow activation before finalizing.