GEMS SENSORS Liquid Flow Switch: Piston, Polypropylene, 1/2 in NPT, 1/2 in Connection Size
The GEMS SENSORS Liquid Flow Switch is a low pressure drop piston flow switch with a fixed set point and normally closed switch position. It features a polypropylene body with 1/2 in NPT connections and a contact…
SKU 3G-OTH-90026
Need installation or engineering help?
Ask a question
Product Description
The GEMS SENSORS Liquid Flow Switch is a low pressure drop piston flow switch with a fixed set point and normally closed switch position. It features a polypropylene body with 1/2 in NPT connections and a contact rating of 20 V DC. The switch is designed for flow detection applications where a fixed 1.0 GPM set point is required.
Frequently Asked Questions
What is the GEMS SENSORS FS-150 liquid flow switch used for?
The GEMS SENSORS FS-150 is a low pressure drop piston flow switch used for flow detection in industrial piping systems. It is ideal for applications requiring a fixed 1.0 GPM set point, such as cooling water lines, lubrication systems, and process control loops where reliable flow/no-flow indication is needed.
What are the specifications of the GEMS SENSORS FS-150 flow switch?
The GEMS SENSORS FS-150 is a polypropylene piston flow switch with 1/2 in NPT connections. It has a fixed set point, normally closed switch position, and a contact rating of 20 V DC. The manufacturer part number is FS-150, NC, 1.0GPM. It is designed for low pressure drop flow detection at 1.0 GPM.
Where to buy the GEMS SENSORS FS-150 flow switch worldwide?
3G Electric supplies the GEMS SENSORS FS-150 liquid flow switch worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this fixed set point, normally closed piston flow switch globally.
How to install the GEMS SENSORS FS-150 piston flow switch?
Install the GEMS SENSORS FS-150 in a horizontal pipe section with the flow arrow aligned to flow direction. Use PTFE tape on the 1/2 in NPT threads to prevent leaks. Ensure the switch is wired to a 20 V DC circuit per the normally closed configuration. Test the set point at 1.0 GPM to verify proper flow detection.
Used in
Common applications for GEMS SENSORSGEMS SENSORS Products
3G Electric supplies GEMS SENSORS low pressure drop piston flow switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.












