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Toxic Gas Valve Closure Systems
(Chlorine, SO2 and Ammonia)

Sheers are the exclusive agent for supply, distribution, service and support in the UK of Halogen Valve Systems, Inc. toxic gas emergency cylinder and drum shutdown and isolation systems

Sheers Limited are the exclusive authorised agent in the United Kingdom for supply, installation and ongoing service and technical support for Halogen Valve Systems, Inc Toxic Gas Emergency shutoff systems.

Halogen Valve Systems is the leading manufacturer of electrically actuated emergency valve shutoff systems for chlorine, sulphur dioxide and ammonia cylinders and drums.

If you feed Chlorine, Sulphur Dioxide, Ammonia or other potentially dangerous gases from cylinders or drums, Halogens’ Emergency Valve Shutoff Systems can provide you with a critical extra measure of safety.

The system will stop a leak within seconds of detection by automatically closing the gas drum or cylinder valve. Halogens’ actuators quickly mount to  valves without the use of any tools, and still allow the valve to be manually opened or closed while the actuator is in place. 

Halogen Valve Systems are the only electrically actuated shutoff systems that confirm that the valves are torqued closed to the recommended values.  

The Halogen Inc. fully automated and microprocessor controlled systems can respond to a leak immediately minimising risk to personnel and the environment. Valve closure times are typically 1 second per valve.

This page is currently being developed and expanded to provide further details and technical information on the product range.  Please feel free to contact us using the form below or by calling us on +44 (0)1325 353337 or emailing directly to halogen@sheers.co.uk .

903 Duplex II Controller

Product information for 903 Duplex II Controller.

  • Controls 1 or 2 Eclipse actuators
  • LED display and membrane keypad
  • Menu-driven user interface
  • Up to 3 days battery backup
  • Shuts valve in 1 to 2 seconds
  • Measures and confirms required valve torque
  • Diagnostic systems with up to 23 alarms & warnings
  • Individual test key for each valve actuator
  • IP67 enclosure
  • Over-torque protection
  • 3-year warranty

902 Hexacon III Controller

Product information for 902 Hexacon III Controller.

  • Controls up to 6 valve actuators
  • OLED Display and Membrane Keypad
  • Menu-driven user interface
  • Up to 3 days battery backup
  • Valve closure in approximately 1 second
  • Measures and confirms required valve torque
  • Diagnostic systems with up to 23 alarms & warnings
  • Individual test key for each valve actuator
  • Optional Second Battery for faster valve closure and increased backup
  • IP67 enclosure
  • Over-torque protection
  • 3-year warranty

803 Low Torque Eclipse XP Actuator

Product information for 803 Low Torque Eclipse XP Actuator

  • All electric / battery powered operation
  • Experience: Over 7000 shutdown systems installed since 1996
  • Torque Sense Technology: Knows when valve is closed
  • No Pneumatics: Maintenance free/very low power use
  • Simplifies Installation: No separate storage kiosk required
  • Closes valve in 1 second
  • Up to 3 days of built-in battery backup
  • Independent test buttons for each cylinder
  • Shutdown via gas detectors, emergency stop buttons or PLC/SCADA
  • Individual test key for each valve actuator
  • Optional Second Battery for faster valve closure and increased backup
  • 3-year warranty
  • Horizontal drum mounted systems available

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