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GEMS SENSORS FS-150 Low Pressure Drop Piston Flow Switch, Normally Open, 0.5 GPM - Low Pressure Drop Piston Flow Switches
GEMS SENSORSLow Pressure Drop Piston Flow Switches

GEMS SENSORS FS-150 Low Pressure Drop Piston Flow Switch, Normally Open, 0.5 GPM

The GEMS SENSORS Liquid Flow Switch is a low pressure drop piston flow switch with a fixed set point and normally open switch position. It features a polypropylene body, 1/2 in NPT connection, and a contact rating of…

SKU 3G-OTH-89108

Also listed as: FS150NO05GPM · FS 150 NO 0 5GPM · FS-150-NO-0-5GPM

Brand
GEMS SENSORS
Item
FS-150 Low Pressure Drop Piston Flow Switch, Normally Open, 0.5 GPM
Category
Low Pressure Drop Piston Flow Switches
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

GEMS SENSORS
Manufacturer Part Number
FS-150, NO, 0.5GPM
Type
Polypropylene, NPT
NPT
1/2 in
Set Point Type
Fixed
Connection Size
1/2 in
Switch Position
Normally Open
Contact Rating (DC)
20 V

Technical Documents

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GEMS SENSORS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GEMS SENSORS Liquid Flow Switch is a low pressure drop piston flow switch with a fixed set point and normally open switch position. It features a polypropylene body, 1/2 in NPT connection, and a contact rating of 20 V DC. The manufacturer part number is FS-150, NO, 0.5GPM.

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 to detect liquid flow in industrial piping systems. It is commonly applied in water treatment, chemical processing, and cooling circuits to trigger an alarm or control action when flow reaches 0.5 GPM.

What are the specifications of the GEMS SENSORS FS-150 flow switch?

The GEMS SENSORS FS-150 is a fixed set point, normally open piston flow switch with a polypropylene body and 1/2 in NPT connections. Its contact rating is 20 V DC, and the switch activates at 0.5 GPM. The manufacturer part number is FS-150, NO, 0.5GPM.

Where to buy the GEMS SENSORS FS-150 flow switch worldwide?

You can source the GEMS SENSORS FS-150 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 on this GEMS SENSORS part.

How to install a GEMS SENSORS piston flow switch?

Install the GEMS SENSORS FS-150 in a horizontal pipe section with the arrow on the body aligned to flow direction. Use PTFE tape on the 1/2 in NPT threads to prevent leaks. Wire the normally open contacts to your control circuit rated for 20 V DC. Test flow activation at 0.5 GPM.

Used in

Common applications for GEMS SENSORS
Burner management — GEMS SENSORS FS-4 piston flow switch for monitoring cooling water flow in industrial burners
Pump protection — GEMS SENSORS FS-380 high-pressure flow switch to detect loss of flow in pump systems
Process control — GEMS SENSORS 230500 thermal-dispersion flow switch for low-flow detection in chemical processes
Cooling systems — GEMS SENSORS RFS flow sight with remote output for visual and electrical flow indication in heat exchangers
Water treatment — GEMS SENSORS FT-110 turbine flow sensor for measuring flow rates in filtration systems
Hydraulic systems — GEMS SENSORS FS-500 polypropylene piston flow switch for corrosive fluid monitoring in hydraulic circuits
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GEMS 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.

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Compatible alternatives & equivalents

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General purpose piston flow switch with fixed set point and normally open switch position. Polypropylene body with 3/4 in FNPT connections. Contact rating: 20 V DC. Used to detect liquid flow or no-flow conditions in industrial piping systems, such as water treatment, HVAC, and process control
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General purpose piston flow switch with fixed set point and normally open switch position. Polypropylene body with 3/4 in FNPT connections. Contact rating: 20 V DC. Used to detect liquid flow or no-flow conditions in industrial piping systems, such as water treatment, HVAC, and process control
General purpose piston flow switch with a fixed set point and normally open switch position. Features a polypropylene body with 3/4 in FNPT connections and a DC contact rating of 20 V. Used to detect liquid flow or no-flow conditions in industrial piping systems, such as water treatment, chemical processing, and HVAC equipment
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General purpose piston flow switch with a fixed set point and normally open switch position. Features a polypropylene body with 3/4 in FNPT connections and a DC contact rating of 20 V. Used to detect liquid flow or no-flow conditions in industrial piping systems, such as water treatment, chemical processing, and HVAC equipment
Polypropylene-bodied piston flow switch with 3/4 in FNPT connections. Fixed set point, normally open switch position, 20 V DC contact rating. Used to detect liquid flow or no-flow conditions in industrial piping systems
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Polypropylene-bodied piston flow switch with 3/4 in FNPT connections. Fixed set point, normally open switch position, 20 V DC contact rating. Used to detect liquid flow or no-flow conditions in industrial piping systems
General purpose piston flow switch with a polypropylene body and 3/4 in FNPT connections. Features a fixed set point and normally open switch position with a DC contact rating of 20 V. Used for flow detection in industrial applications such as pump protection, cooling systems, and process control
GEMS SENSORS
General purpose piston flow switch with a polypropylene body and 3/4 in FNPT connections. Features a fixed set point and normally open switch position with a DC contact rating of 20 V. Used for flow detection in industrial applications such as pump protection, cooling systems, and process control
General purpose piston flow switch with fixed set point for detecting liquid flow or no-flow conditions in piping systems. Polypropylene body with 3/4 in FNPT connections, normally open switch, and 20 V DC contact rating
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General purpose piston flow switch with fixed set point for detecting liquid flow or no-flow conditions in piping systems. Polypropylene body with 3/4 in FNPT connections, normally open switch, and 20 V DC contact rating
This general purpose piston flow switch detects liquid flow or no-flow conditions in piping systems. It features a polypropylene body with 3/4 in FNPT connections, a fixed set point, and a normally open switch position with a 20 V DC contact rating. Suitable for use in water treatment, chemical processing, and HVAC applications to protect equipment from dry running or insufficient flow
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This general purpose piston flow switch detects liquid flow or no-flow conditions in piping systems. It features a polypropylene body with 3/4 in FNPT connections, a fixed set point, and a normally open switch position with a 20 V DC contact rating. Suitable for use in water treatment, chemical processing, and HVAC applications to protect equipment from dry running or insufficient flow

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This low pressure drop piston flow switch from GEMS SENSORS features a fixed set point of 0.5 GPM and a normally closed switch position. Constructed with polypropylene and a 1/2 in NPT connection, it is suited for flow detection in industrial piping systems, such as pump protection and cooling water monitoring. The contact rating is 20 V DC
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This low pressure drop piston flow switch from GEMS SENSORS features a fixed set point of 0.5 GPM and a normally closed switch position. Constructed with polypropylene and a 1/2 in NPT connection, it is suited for flow detection in industrial piping systems, such as pump protection and cooling water monitoring. The contact rating is 20 V DC
Polypropylene-bodied piston flow switch with 1/2 in NPT connections and fixed set point. Normally open switch position with 20 V DC contact rating. Used to detect liquid flow or no-flow conditions in piping systems for pump and equipment protection
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Polypropylene-bodied piston flow switch with 1/2 in NPT connections and fixed set point. Normally open switch position with 20 V DC contact rating. Used to detect liquid flow or no-flow conditions in piping systems for pump and equipment protection
Polypropylene body flow switch with 1/2 in NPT connections, fixed set point, and normally open switch position. Rated for 20 V DC. Used to detect liquid flow in piping systems for alarm or pump control
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Polypropylene body flow switch with 1/2 in NPT connections, fixed set point, and normally open switch position. Rated for 20 V DC. Used to detect liquid flow in piping systems for alarm or pump control
This low pressure drop piston flow switch from GEMS SENSORS features a polypropylene body with 1/2 in NPT connections. It has a fixed set point of 1.0 GPM and a normally closed switch position with a contact rating of 20 V DC. Suitable for flow detection in industrial piping systems such as cooling water lines, lubrication systems, and process control loops
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This low pressure drop piston flow switch from GEMS SENSORS features a polypropylene body with 1/2 in NPT connections. It has a fixed set point of 1.0 GPM and a normally closed switch position with a contact rating of 20 V DC. Suitable for flow detection in industrial piping systems such as cooling water lines, lubrication systems, and process control loops
Polypropylene-bodied piston flow switch with 1/2 in NPT connections and fixed set point. Normally open switch position, 20 V DC contact rating. Used to detect liquid flow in piping systems for process control or alarm triggering
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Polypropylene-bodied piston flow switch with 1/2 in NPT connections and fixed set point. Normally open switch position, 20 V DC contact rating. Used to detect liquid flow in piping systems for process control or alarm triggering