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GEMS SENSORS Liquid Flow Switch: Piston, Brass, 3/8 in NPT, 3/8 in Connection Size, NPT - High-Pressure-Rated Compact Flow Switches
GEMS SENSORSHigh-Pressure-Rated Compact Flow Switches

GEMS SENSORS Liquid Flow Switch: Piston, Brass, 3/8 in NPT, 3/8 in Connection Size, NPT

The GEMS SENSORS Liquid Flow Switch is a high-pressure-rated compact piston-type flow switch with a fixed set point and normally open SPST switch position. It features a brass body with 3/8 in NPT connections and a…

SKU 3G-OTH-90172

Brand
GEMS SENSORS
Item
Liquid Flow Switch: Piston, Brass, 3/8 in NPT, 3/8 in Connection Size, NPT
Category
High-Pressure-Rated Compact Flow Switches
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Technical Specifications

GEMS SENSORS
Manufacturer Part Number
FS-380, 168435
Type
Brass, NPT, SPST, Fixed
NPT
3/8 in
Set Point Type
Fixed
Connection Size
3/8 in
Switch Position
Normally Open
Contact Rating (DC)
20 V
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GEMS SENSORS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GEMS SENSORS Liquid Flow Switch is a high-pressure-rated compact piston-type flow switch with a fixed set point and normally open SPST switch position. It features a brass body with 3/8 in NPT connections and a 20 V DC contact rating. This model is identified by manufacturer part numbers FS-380 and 168435.

Frequently Asked Questions

What is the GEMS SENSORS FS-380 liquid flow switch used for?

The GEMS SENSORS FS-380 liquid flow switch is used to detect flow or no-flow conditions in high-pressure industrial fluid systems. It is commonly applied in water treatment, HVAC, and process control to protect pumps and equipment from dry running or insufficient flow.

What are the specifications of the GEMS SENSORS 168435 flow switch?

The GEMS SENSORS 168435 flow switch is a piston-type, brass-body unit with 3/8 in NPT connections. It has a fixed set point, normally open SPST switch position, and a 20 V DC contact rating. The manufacturer part numbers are FS-380 and 168435.

Where to buy GEMS SENSORS flow switch FS-380 worldwide?

You can source the GEMS SENSORS FS-380 flow switch worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install a GEMS SENSORS piston flow switch?

Install the GEMS SENSORS piston flow switch in a horizontal pipe section with the arrow on the body aligned to flow direction. Use thread sealant on the 3/8 in NPT connections and ensure electrical wiring matches the normally open SPST configuration. Consult the manufacturer manual for torque specs.

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 high-pressure-rated compact 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, Polypropylene, 3/8 in NPT, 3/8 in Connection Size, NPT (MPN FS-380P, 209876). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 10 V.
GEMS SENSORS Liquid Flow Switch: Piston, 316 Stainless Steel, 3/8 in NPT, 3/8 in Connection Size (MPN FS-380, 179995). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 20 V.
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GEMS SENSORS Liquid Flow Switch: Piston, 316 Stainless Steel, 3/8 in NPT, 3/8 in Connection Size (MPN FS-380, 179995). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 20 V.
GEMS SENSORS Liquid Flow Switch: Piston, 316 Stainless Steel, 3/8 in NPT, 3/8 in Connection Size (MPN FS-380, 179996). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 20 V.
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GEMS SENSORS Liquid Flow Switch: Piston, 316 Stainless Steel, 3/8 in NPT, 3/8 in Connection Size (MPN FS-380, 179996). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 20 V.
GEMS SENSORS Liquid Flow Switch: Piston, Polypropylene, 3/8 in NPT, 3/8 in Connection Size, NPT (MPN FS-380P, 197082). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 10 V.
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GEMS SENSORS Liquid Flow Switch: Piston, Polypropylene, 3/8 in NPT, 3/8 in Connection Size, NPT (MPN FS-380P, 197082). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 10 V.
GEMS SENSORS Liquid Flow Switch: Piston, Polypropylene, 3/8 in NPT, 3/8 in Connection Size, NPT (MPN FS-380P, 197081). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 10 V.
GEMS SENSORS
GEMS SENSORS Liquid Flow Switch: Piston, Polypropylene, 3/8 in NPT, 3/8 in Connection Size, NPT (MPN FS-380P, 197081). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 10 V.
GEMS SENSORS Liquid Flow Switch: Piston, Polypropylene, 3/8 in NPT, 3/8 in Connection Size, NPT (MPN FS-380P, 197083). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 10 V.
GEMS SENSORS
GEMS SENSORS Liquid Flow Switch: Piston, Polypropylene, 3/8 in NPT, 3/8 in Connection Size, NPT (MPN FS-380P, 197083). Key specifications — Brand: GEMS SENSORS; Set Point Type: Fixed; Switch Position: Normally Open; Contact Rating (DC): 10 V.