EXW Singapore — collect or forward from our Singapore office.

3G Electric
GEMS SENSORS RFS 156265 Liquid Flow Switch with Remote Output - Flow Sights with Remote Output
GEMS SENSORSFlow Sights with Remote Output

GEMS SENSORS RFS 156265 Liquid Flow Switch with Remote Output

The GEMS SENSORS Liquid Flow Switch: Brass (MPN RFS, 156265) is a flow sight with remote output featuring a 1/4 in FNPT connection, SPDT switch type, and normally open switch position. It is UL Listed, with Viton…

SKU 3G-OTH-90728

Also listed as: RFS156265 · RFS 156265 · RFS-156265

Brand
GEMS SENSORS
Item
RFS 156265 Liquid Flow Switch with Remote Output
Part Number
RFS, 156265
Category
Flow Sights with Remote Output
Available to Order
Also known as:RFS, 156265GEMS SENSORS
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Compliance & shipping

Hazardous material
Not classified as hazardous
California Prop 65 warning
No warning recorded
Licence required
No licence required
Safety Data Sheet
Not available
Special shipping
Ships under standard freight

Technical Specifications

GEMS SENSORS
Manufacturer Part Number
RFS, 156265
Type
FNPT, -20°F – 212°F
UNSPSC
39121538
Standards
CE Certified; UL Listed
Switch Type
SPDT
Catalog Page
N/A
Body Material
Brass
Filter Rating
150 micron
Overall Width
3 in
Max. Flow Rate
5 gpm
Min. Flow Rate
0.5 gpm
Overall Height
2.4 in
Overall Length
2.3 in
Connection Size
1/4 in Connection Size The compatible size for connecting a device to a system's pipe or line.
Connection Type
FNPT
Switch Position
Normally Closed Normally Open
Wetted Material
Brass; Ceramic; Polysulfone; Viton
Flow Switch Type
Hall Effect
Fluid Connection
1/4 in FNPT
Country of Origin
USA (subject to change)
Media Temp. Range
-20 °F – 212 °F
Contact Rating (AC)
45 mA @ 115V (No Load); 95 mA @ 115V (Load - Relay Energized)
Contact Rating (DC)
20 mA @ 24V
Max. Media Temperature
212 °F
Min. Media Temperature
-20 °F
Set Point Configuration
Adjustable
Max. Ambient Temperature
212 °F
Min. Ambient Temperature
-20 °F

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The GEMS SENSORS Liquid Flow Switch: Brass (MPN RFS, 156265) is a flow sight with remote output featuring a 1/4 in FNPT connection, SPDT switch type, and normally open switch position. It is UL Listed, with Viton wetted material, and operates within a temperature range of -20°F to 212°F.

Frequently Asked Questions

What is the GEMS SENSORS RFS 156265 liquid flow switch used for?

The GEMS SENSORS RFS 156265 liquid flow switch is used to detect flow or no-flow conditions in industrial piping systems. It provides a remote electrical output via its SPDT switch, making it suitable for process control, pump protection, and monitoring applications in water treatment, HVAC, and chemical processing.

What are the specifications of the GEMS SENSORS RFS 156265 flow switch?

The GEMS SENSORS RFS 156265 is a brass liquid flow switch with a 1/4 in FNPT connection. It features an SPDT switch type, normally open position, and Viton wetted material. It is UL Listed and operates from -20°F to 212°F. The manufacturer part number is RFS, 156265.

Where to buy the GEMS SENSORS RFS 156265 flow switch worldwide?

You can source the GEMS SENSORS RFS 156265 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; we supply genuine GEMS SENSORS components for international procurement.

How to install the GEMS SENSORS RFS 156265 liquid flow switch?

Install the GEMS SENSORS RFS 156265 flow switch in a horizontal pipe section with the flow arrow aligned to flow direction. Use thread sealant on the 1/4 in FNPT connection and ensure the Viton wetted material is compatible with your fluid. Wire the SPDT switch per your control circuit; consult the manufacturer's manual for torque and electrical ratings.

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.
Not sure this is the right part? Photo-identify it→

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from GEMS SENSORS

View all GEMS SENSORS parts →
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
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
GEMS SENSORS
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
Flow sight with remote output for detecting liquid flow in piping systems. Features a 1 in FNPT connection, SPDT switch (normally open), ceramic wetted material, and CE certification. Operating temperature range -20°F to 212°F. Suitable for industrial applications such as HVAC, water treatment, and process control to monitor flow conditions
GEMS SENSORS
Flow sight with remote output for detecting liquid flow in piping systems. Features a 1 in FNPT connection, SPDT switch (normally open), ceramic wetted material, and CE certification. Operating temperature range -20°F to 212°F. Suitable for industrial applications such as HVAC, water treatment, and process control to monitor flow conditions

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first