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GEMS SENSORS Air Flow Switch: Piston, 316 Stainless Steel, 1/2 in FNPT, 1/2 in Connection Size - Adjustable Set Point Flow Switches
GEMS SENSORSAdjustable Set Point Flow Switches

GEMS SENSORS Air Flow Switch: Piston, 316 Stainless Steel, 1/2 in FNPT, 1/2 in Connection Size

The GEMS SENSORS Air Flow Switch: Piston is an adjustable set point flow switch with a normally closed switch position and a 20 V DC contact rating. It is constructed with 316 stainless steel, features a 1/2 in FNPT…

SKU 3G-OTH-89411

Brand
GEMS SENSORS
Item
Air Flow Switch: Piston, 316 Stainless Steel, 1/2 in FNPT, 1/2 in Connection Size
Category
Adjustable Set Point Flow Switches
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Technical Specifications

GEMS SENSORS
Manufacturer Part Number
FS-10798, 25366
Type
FNPT
FNPT
1/2 in
Set Point Type
Adjustable
Connection Size
1/2 in
Stainless Steel
316
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 Air Flow Switch: Piston is an adjustable set point flow switch with a normally closed switch position and a 20 V DC contact rating. It is constructed with 316 stainless steel, features a 1/2 in FNPT connection, and is certified for hazardous locations per Class I, Div 2, Groups A, B, C, D. This product is available under manufacturer part numbers FS-10798 and 25366.

Frequently Asked Questions

What is the GEMS SENSORS FS-10798 air flow switch used for?

The GEMS SENSORS FS-10798 air flow switch monitors air or gas flow in industrial systems. Its adjustable set point and normally closed switch position make it suitable for alarm or shutdown circuits in hazardous locations classified Class I, Div 2, Groups A, B, C, D.

What are the specifications of the GEMS SENSORS 25366 flow switch?

The GEMS SENSORS 25366 flow switch features a 316 stainless steel piston, 1/2 in FNPT connection, adjustable set point, normally closed switch, and 20 V DC contact rating. It is certified for hazardous locations Class I, Div 2, Groups A, B, C, D.

Where to buy GEMS SENSORS flow switches worldwide?

3G Electric supplies GEMS SENSORS flow switches worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the FS-10798 or 25366 models.

How to install a GEMS SENSORS piston flow switch?

Install the GEMS SENSORS piston flow switch in a vertical pipe run with flow direction matching the arrow on the body. Use thread sealant on the 1/2 in FNPT connection. Adjust the set point per the manual. For hazardous locations, follow Class I, Div 2 wiring practices.

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, Brass, 1/4 in FNPT, 1/4 in Connection Size, FNPT, SPDT (MPN FS-926, 26938). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 20 V.
GEMS SENSORS Liquid Flow Switch: Piston, Brass, 1/4 in FNPT, 1/4 in Connection Size, FNPT, SPDT (MPN FS-926, 26941). Key specifications — Brand: GEMS SENSORS; Hazardous Location Specification: Class I, Div 2, Group A, B, C, D; Set Point Type: Fixed; Switch Position: Normally Closed; 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.
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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 Liquid Flow Switch: Piston, Bronze, 3/4 in FNPT, 3/4 in Connection Size, FNPT, SPDT (MPN FS-400, 26602). 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, 3/4 in FNPT, 3/4 in Connection Size, FNPT, SPDT (MPN FS-400, 26602). 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.