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GEMS SENSORS RFS Flow Sight with Remote Output - Flow Sights with Remote Output
GEMS SENSORSFlow Sights with Remote Output

GEMS SENSORS RFS Flow Sight with Remote Output

The GEMS SENSORS Liquid Flow Switch: Brass is a flow sight with remote output, featuring a 1 in FNPT connection and SPDT switch type. It is normally open, CE Certified, and has a wetted material of ceramic. The…

SKU 3G-OTH-90864

Also listed as: RFS181688 · RFS 181688 · RFS-181688

Brand
GEMS SENSORS
Item
RFS Flow Sight with Remote Output
Part Number
RFS, 181688
Category
Flow Sights with Remote Output
Available to Order
Also known as:RFS, 181688GEMS SENSORS
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

GEMS SENSORS
Manufacturer Part Number
RFS, 181688
Type
FNPT, -20°F – 212°F, SPDT
Standards
CE Certified
Switch Type
SPDT
Connection Size
1 in
Switch Position
Normally Open
Wetted Material
Ceramic

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

Product Description

The GEMS SENSORS Liquid Flow Switch: Brass is a flow sight with remote output, featuring a 1 in FNPT connection and SPDT switch type. It is normally open, CE Certified, and has a wetted material of ceramic. The operating temperature range is -20°F to 212°F, with the manufacturer part number RFS, 181688.

Frequently Asked Questions

What is the GEMS SENSORS RFS liquid flow switch used for?

The GEMS SENSORS RFS liquid flow switch is used to detect and signal the presence or absence of liquid flow in industrial piping systems. It is commonly applied in HVAC, water treatment, and process control to protect pumps and equipment from dry-run or low-flow conditions.

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

The GEMS SENSORS RFS flow switch has a 1 in FNPT brass body, SPDT switch type, normally open position, and ceramic wetted material. It is CE Certified, operates from -20°F to 212°F, and carries manufacturer part number RFS, 181688.

Where to buy the GEMS SENSORS RFS flow switch worldwide?

3G Electric supplies the GEMS SENSORS RFS flow switch worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this CE Certified SPDT flow switch.

How to install a GEMS SENSORS RFS liquid flow switch?

Install the GEMS SENSORS RFS flow switch in a horizontal pipe section with the arrow aligned to flow direction. Use PTFE tape on the 1 in FNPT threads, ensure the ceramic wetted material is compatible with the fluid, and wire the SPDT contacts per your control circuit. Test for proper actuation at the set point.

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 flow sights with remote output. 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
This flow sight with remote output from GEMS SENSORS is designed for detecting flow or no-flow conditions in industrial piping systems. It features a polypropylene body, 1/4 in FNPT connection, SPDT switch type, and normally closed switch position. The wetted material is Buna-N, and the unit is UL Listed. Typical applications include process control, pump protection, and monitoring in water treatment, chemical processing, and HVAC systems
This flow sight with remote output allows visual verification and remote monitoring of liquid flow in industrial piping systems. It features a polysulfone sight window, polypropylene wetted parts, and a Buna-N seal. The 1/4 in FNPT connection is designed for horizontal right flow direction. Typical applications include water treatment and chemical processing where flow indication and remote output are required
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This flow sight with remote output allows visual verification and remote monitoring of liquid flow in industrial piping systems. It features a polysulfone sight window, polypropylene wetted parts, and a Buna-N seal. The 1/4 in FNPT connection is designed for horizontal right flow direction. Typical applications include water treatment and chemical processing where flow indication and remote output are required

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