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GEMS SENSORS Liquid Flow Switch: Piston, Bronze, 3/4 in FNPT, 3/4 in Connection Size - Adjustable Set Point Flow Switches
GEMS SENSORSAdjustable Set Point Flow Switches

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

The GEMS SENSORS Liquid Flow Switch: Piston is an adjustable set point flow switch with a bronze body and 3/4 in FNPT connections. It features a normally closed SPDT switch with a 20 V DC contact rating and is rated…

SKU 3G-OTH-89352

Brand
GEMS SENSORS
Item
Liquid Flow Switch: Piston, Bronze, 3/4 in FNPT, 3/4 in Connection Size
Category
Adjustable Set Point Flow Switches
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Technical Specifications

GEMS SENSORS
Manufacturer Part Number
FS-400, 26602
Type
Bronze, FNPT, SPDT
FNPT
3/4 in
Set Point Type
Adjustable
Connection Size
3/4 in
Switch Position
Normally Closed
Contact Rating (DC)
20 V
Hazardous Location Specification
Class I, Div 2, Group A, B, C, D
View Full Spec Sheet

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

Product Description

The GEMS SENSORS Liquid Flow Switch: Piston is an adjustable set point flow switch with a bronze body and 3/4 in FNPT connections. It features a normally closed SPDT switch with a 20 V DC contact rating and is rated for hazardous locations Class I, Div 2, Groups A, B, C, D (MPN FS-400, 26602).

Frequently Asked Questions

What is the GEMS SENSORS FS-400 liquid flow switch used for?

The GEMS SENSORS FS-400 liquid flow switch is used to detect and control liquid flow in industrial piping systems. It is suitable for hazardous locations classified as Class I, Div 2, Groups A, B, C, D, making it ideal for oil and gas, chemical, and processing plants where safety-rated equipment is required.

What are the specifications of the GEMS SENSORS FS-400 flow switch?

The GEMS SENSORS FS-400 (MPN 26602) is a piston-type liquid flow switch with a bronze body and 3/4 in FNPT connections. It features an adjustable set point, a normally closed SPDT switch, and a 20 V DC contact rating. It is rated for hazardous locations Class I, Div 2, Groups A, B, C, D.

Where to buy the GEMS SENSORS FS-400 flow switch worldwide?

You can source the GEMS SENSORS FS-400 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 adjustable set point flow switch.

How to install the GEMS SENSORS FS-400 flow switch?

Install the GEMS SENSORS FS-400 flow switch in a horizontal pipe section with the arrow on the body aligned with flow direction. Use thread sealant on the 3/4 in FNPT connections and ensure electrical wiring matches the normally closed SPDT configuration. Always follow hazardous location wiring practices for Class I, Div 2 environments.

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

GEMS SENSORS Products

3G Electric supplies GEMS SENSORS adjustable set point 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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GEMS SENSORS Liquid Flow Switch: Piston, Bronze, 1 in FNPT, 1 in Connection Size, FNPT, SPDT, Adj (MPN FS-200, 26838). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Adjustable; Switch Position: Normally Open; Contact Rating (DC): 20 V.
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GEMS SENSORS Liquid Flow Switch: Piston, Bronze, 1 in FNPT, 1 in Connection Size, FNPT, SPDT, Adj (MPN FS-200, 26615). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Adjustable; Switch Position: Normally Closed; Contact Rating (DC): 20 V.
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GEMS SENSORS Liquid Flow Switch: Piston, 316 Stainless Steel, 1/2 in FNPT, 1/2 in Connection Size (MPN FS-10798, 25364). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Adjustable; Switch Position: Normally Closed; Contact Rating (DC): 20 V.
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GEMS SENSORS Liquid Flow Switch: Piston, Bronze, 3/4 in FNPT, 3/4 in Connection Size, FNPT, SPDT (MPN FS-400, 26601). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Adjustable; Switch Position: Normally Open; Contact Rating (DC): 20 V.
GEMS SENSORS Liquid Flow Switch: Piston, Bronze, 1 in FNPT, 1 in Connection Size, FNPT, SPDT, Adj (MPN FS-200, 26616). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Adjustable; Switch Position: Normally Closed; Contact Rating (DC): 20 V.
GEMS SENSORS
GEMS SENSORS Liquid Flow Switch: Piston, Bronze, 1 in FNPT, 1 in Connection Size, FNPT, SPDT, Adj (MPN FS-200, 26616). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Adjustable; Switch Position: Normally Closed; Contact Rating (DC): 20 V.
GEMS SENSORS Air Flow Switch: Piston, Brass, 1/2 in FNPT, 1/2 in Connection Size, FNPT, SPDT, Adj (MPN FS-10798, 25365). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Adjustable; Switch Position: Normally Closed; Contact Rating (DC): 20 V.
GEMS SENSORS
GEMS SENSORS Air Flow Switch: Piston, Brass, 1/2 in FNPT, 1/2 in Connection Size, FNPT, SPDT, Adj (MPN FS-10798, 25365). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Adjustable; Switch Position: Normally Closed; Contact Rating (DC): 20 V.