Uflex US5-E Stainless Steel Fuel and Water Sender

The Uflex US5-E Stainless Steel Fuel and Water Sender is a tubular tank-level sensor for compatible Uflex fuel and water gauges. A float containing twin magnets moves along the sender shaft and operates enclosed internal switches, producing a 0Ω empty to 180Ω full European-resistance output.

The sender is manufactured from 316 stainless steel, uses an internationally standardised SAE five-hole mounting flange and is listed for 12V and 24V gauge systems. Uflex offers US5-E lengths from 150mm to 900mm, allowing the sender to be selected for the tank depth.

Product Identification

• Brand: Uflex
• Manufacturer group: Ultraflex Group
• Product family: US5-E
• Product name: Stainless Steel Fuel and Water Level Sender
• Sender type: Vertical tubular float sender
• Applications: Fuel and water tank level measurement
• Material: 316 stainless steel
• Float operation: Twin magnets within the float
• Switching system: Internal switches housed within the shaft
• Mounting flange: SAE five-hole flange
• Resistance range: 0Ω empty to 180Ω full
• Resistance standard: European rising resistance
• System compatibility: 12V and 24V Uflex gauge installations
• Official length range: 150-900mm
• Compatible gauges: European-resistance Uflex fuel and water gauges
• Compatible with Uflex 22463TK: No
• NMEA output: No
• Gauge included: No

What Is the Uflex US5-E Used For?

The sender converts the liquid level inside a compatible tank into a resistive signal for a dashboard gauge.

• Marine fuel tanks
• Boat fresh-water tanks
• Yacht domestic-water tanks
• Auxiliary fuel tanks
• Replacement SAE five-hole senders
• Uflex European-resistance gauge systems

How Does the Sender Work?

The float moves vertically with the liquid level. Twin magnets within the float operate enclosed switches inside the sender shaft, changing the electrical resistance supplied to the gauge.

What Does 0Ω Empty to 180Ω Full Mean?

• Empty tank: Approximately 0Ω
• Full tank: Approximately 180Ω
• Direction: Resistance increases as the tank fills
• Standard: European resistance

Matching Uflex gauges may be listed as 0-190Ω. Uflex groups these products within the same European rising-resistance fuel/water system, but the labels and instructions supplied with both components must be checked.

Which Gauges Are Compatible?

• Uflex 60518TK Ultra Black fuel gauge
• Uflex 60520LK Ultra Black water gauge
• Uflex 60542UK Ultra White fuel gauge
• Uflex 60544WK Ultra White tank gauge
• Other Uflex fuel/water gauges specified for European rising resistance

Can It Be Used with the Uflex Waste-Tank Gauge?

No. The Uflex 22463TK waste-tank gauge requires a 240-33Ω US3H holding-tank sender. The US5-E has a 0-180Ω rising-resistance output and is not electrically compatible.

How Do I Select the Correct Sender Length?

Measure the internal tank depth at the sender mounting position and select an approved US5-E length that allows correct float movement and installation clearance.

• Check the internal tank depth
• Check clearance from the tank bottom
• Check the position of baffles and pipework
• Confirm the five-hole flange pattern
• Allow access for wiring and maintenance
• Do not shorten the sender unless the instructions expressly permit it

Available Models and Lengths

• 20606C / US5-E150: 150mm
• 20607E / US5-E175: 175mm
• 20608G / US5-E200: 200mm
• 20609J / US5-E225: 225mm
• 20610T / US5-E250: 250mm
• 20611V / US5-E275: 275mm
• 20612X / US5-E300: 300mm
• 20613Z / US5-E350: 350mm
• 20614B / US5-E400: 400mm
• 20615D / US5-E450: 450mm
• 20616F / US5-E500: 500mm
• 20617H / US5-E550: 550mm
• 20618K / US5-E600: 600mm
• 20619M / US5-E650: 650mm
• 20620W / US5-E700: 700mm
• 20621Y / US5-E750: 750mm
• 20622A / US5-E800: 800mm
• 20623C / US5-E850: 850mm
• 20624E / US5-E900: 900mm

Is the Sender Suitable for 12V and 24V Systems?

Supplier data list the sender for 12V and 24V gauge installations. Voltage compatibility does not replace the need to match the gauge resistance range, wiring arrangement and grounding requirements.

What Is Included?

This listing is for 1 x selected Uflex US5-E sender. The dashboard gauge, tank, adaptor and installation wiring are not included.

The reviewed product data do not fully confirm whether every length includes a gasket, mounting screws, washers or electrical connectors. Check the selected product packaging before installation.

Construction and Design

• 316 stainless steel construction
• Vertical tubular sender
• Twin-magnet float
• Internal enclosed switches
• SAE five-hole mounting flange
• 0-180Ω European output
• Fuel and water applications
• 12V and 24V gauge-system compatibility
• Lengths from 150mm to 900mm
• Gauge sold separately

Installation and Safety

• Confirm the selected model and sender length
• Measure the tank depth accurately
• Verify the SAE five-hole flange pattern
• Check clearance from baffles and pipework
• Isolate electrical power
• Make the tank safe before opening it
• Eliminate ignition sources when working on a fuel tank
• Prevent drilling debris from entering the tank
• Use seals approved for the tank contents
• Do not shorten or modify the sender unless expressly permitted
• Tighten mounting fasteners evenly
• Check the completed installation for leaks
• Connect only to a compatible European-resistance gauge
• Test the system before returning it to service
• Follow the current Uflex, tank and vessel instructions

Key Features

• Uflex US5-E fuel and water sender family
• 316 stainless steel
• Twin-magnet float operation
• Internal switches enclosed in the shaft
• SAE five-hole mounting flange
• 0Ω empty to 180Ω full
• European rising resistance
• Compatible with Uflex fuel and water gauges
• Official lengths from 150mm to 900mm
• Gauge sold separately
• Not compatible with 240-33Ω holding-tank gauges