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GEMS SENSORS FS-500 General Purpose Piston Flow Switch - General Purpose Piston Flow Switches
GEMS SENSORSGeneral Purpose Piston Flow Switches

GEMS SENSORS FS-500 General Purpose Piston Flow Switch

The GEMS SENSORS Liquid Flow Switch: Piston is a general purpose piston flow switch with a fixed set point and normally open switch position. It features a polypropylene body with 3/4 in FNPT connections and a…

SKU 3G-OTH-89123

Also listed as: FS500170231 · FS 500 170231 · FS-500-170231

Brand
GEMS SENSORS
Item
FS-500 General Purpose Piston Flow Switch
Part Number
FS-500, 170231
Category
General Purpose Piston Flow Switches
Available to Order
Also known as:FS-500, 170231GEMS SENSORS
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

GEMS SENSORS
Manufacturer Part Number
FS-500, 170231
Type
Polypropylene, FNPT
FNPT
3/4 in
Set Point Type
Fixed
Connection Size
3/4 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: Piston is a general purpose piston flow switch with a fixed set point and normally open switch position. It features a polypropylene body with 3/4 in FNPT connections and a contact rating of 20 V DC. This model is identified by manufacturer part numbers FS-500 and 170231.

Frequently Asked Questions

What is the GEMS SENSORS FS-500 liquid flow switch used for?

The GEMS SENSORS FS-500 is a general purpose piston flow switch used to detect liquid flow or no-flow conditions in industrial piping systems. It is commonly applied in water treatment, chemical processing, and HVAC equipment to protect pumps and other components from dry running or insufficient flow.

What are the specifications of the GEMS SENSORS 170231 flow switch?

The GEMS SENSORS 170231 (MPN FS-500) is a fixed set point, normally open piston flow switch. It has a polypropylene body with 3/4 in FNPT connections and a contact rating of 20 V DC. It is designed for general purpose liquid flow monitoring in industrial environments.

Where to buy GEMS SENSORS flow switches worldwide?

GEMS SENSORS flow switches are available to order through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact 3G Electric for pricing and lead time on the FS-500 or 170231 model.

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 PTFE tape on the 3/4 in FNPT threads to prevent leaks. Wire the normally open contacts to your control circuit rated for 20 V DC. Always verify flow direction and pressure rating before operation.

Used in

Common applications for GEMS SENSORS
Cooling water systems — Gems Sensors flow sights with remote output (e.g., 1AMB2) monitor flow to critical equipment and signal alarms.
Lubrication lines — Gems Sensors flow indicators (e.g., 1AMD3) provide visual confirmation of oil flow to bearings and gears.
Process water monitoring — Gems Sensors flow sights (e.g., 1AMB9) verify flow in water treatment and chemical dosing systems.
HVAC systems — Gems Sensors flow switches (e.g., 1AMB5) detect flow in chilled water and condenser loops for pump control.
Food and beverage — Gems Sensors flow sights with stainless steel bodies (e.g., 1AMD4) are used in clean-in-place (CIP) systems for flow verification.
Power generation — Gems Sensors flow sights (e.g., 1AMB6) monitor cooling water and lube oil flow in turbines and generators.
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GEMS SENSORS Products

3G Electric supplies GEMS SENSORS general purpose 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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