Fail-Safe, Multi-Voltage Motorised Valves with Spring Return

The FEL Valves range is a Rotary actuator with emergency control function (Fail-Safe) for 2-way and 3-way ball valves that are specifically designed for use with diesel, fuel, or Biofuels.

This is a great product with its 100% automatic shut off, which is widely used in generator fuel systems/diesel systems and similar systems.

Our diesel fail-safe actuator is integrated across many sectors –

  • Defence
  • Healthcare
  • Security
  • Energy
  • Environment and Agriculture
  • Construction

Predominantly used across many applications such as –

  • Fuel systems as a fail-safe shut off or opening for a generator set in the event of fire/mains failure.
  • Diesel transfer sets in conjunction with pumps as it allows to control the pump due to its status switches
  • Automated control (Open/Close) between bulk tanks and day tanks to allow isolation of fuel line.

Key Features of our Spring Return Fail-Safe Motorised Valve

  • This is a stock item with fast deliveries.
  • Assembled and tested at FEL Valves. Giving you greater peace of mind with 100% working functionality before goods are despatched.
  • “Normally Open” or “Normally Closed” when energised.
  • Spring return (Fail-Safe) NC – de-energised valve closed (This can also be de-energised valve open).
  • High functional reliability. The actuator is overload protected.
  • Requires no limit switches and automatically stops when the end stop is reached.
  • Mounting position in relation to the ball valve can be selected in 90 degrees steps.
  • Torque: Available options are 10 & 20 Nm @ nominal voltage on our fail-safe range.
  • The actuator is equipped with universal voltage: AC 24…240 V / DC 24…125 V (Multi Voltage Actuator).
  • FEL Valves can offer a 12V fail-safe option, which is suitable for diesel or biofuel systems.
  • Manual actuation of the valve with manual elevator crank, engagement with the locking switch at any position.
  • Unlocking is manual or automatic by applying the operating voltage.
  • Flexible signalisation. 2 x auxiliary switches (1 fixed setting and 1 adjustable).
  • Silicone-free lubricant on all seats.
  • 100% seal test in according to EN 1266-1 RATE A.
  • BSP and NPT threads available. Suitable with diesel, fuel, and biofuels.

Available Sizes Spring Return Motorised Valve

  • ½” (15mm)
  • ¾” (20mm)
  • 1” (25mm)
  • 1 ¼” (32mm)
  • 1 ½” (40mm)
  • 2" (50mm)
Nominal Voltage:
  • AC 24...240 V / DC 24...125 V
  • Diesel
  • Fuel
  • Biofuels
Valve Body:
  • Hot forged brass ball valve and cap sealed with Loctite
  • Flow: 100% full port for maximum flow
  • Stem: 2 O-rings for maximum safety with a blowout-proof nickel-plated brass stem
  • Sealing: Self lubricating seats with flexible-lip and wear compensation design
  • Threads: Female by Female. BSP and NPT threads are available/suitable for diesel
Nominal Voltage Frequency:
  • 50/60 Hz
Power Consumption:
  • Operation: 7 W @ nominal torque
  • In rest position: 3.5 W
  • Rating: 18 VA
  • Motor: cable 1 m, 2 x 0.75 mm squared
Direction of Rotation:
  • Motor: selectable with switch
  • Angle of rotation: max. 90 degrees
  • Manual override: via hand crank and interlocking switch
Running time:
  • Motor: 75 s
  • Spring return: ca. 20 s
Safety class:
  • II protective insulated
  • Degree of protection: IP54 (Weather shield is available to make the actuator weather resistant) See downloads for more information.
Safety Notes
  • Caution: Power supply Voltage!
  • Only authorised specialists may carry out installation.
  • All applicable legal or institutional installation regulations must be compiled during installation.
  • The device may only be opened at the manufacturer’s site.
  • It does not contain any parts that can be replaced or repaired by the user.
  • Cables must not be removed from the device.
  • The device contains electrical end electronic components and is not allowed to be disposed of as household refuse. All locally valid regulations and requirements must be observed.
  • The two switches integrated in the actuator are to be operated either on power supply voltage or at safety extra-low voltage. The combination power supply voltage/safety extra-low voltage is not permitted.
Installation of the Spring Return Motorised Valve The fail-safe actuator with a ball valve suitable for diesel can be installed upright to horizontal. *Important Information* The ball valve may not be installed in a hanging position i.e., with the stem pointing downwards. Electrical Installation of Motorised Valve