Air Maintenance Devices

Air Maintenance Devices

We manufacture a variety of Air Maintenance Devices, to be used to maintain sprinkler systems that run off the works main air supply or a separate compressor (with an air receiver; it’s not a good idea to use one on a compressor without receiver as it’s unlikely to quickly burn out), to automatically control air entering the system at the required volume and pressure.

When used alongside an air compressor with a receiver, the Air Maintenance Device regulates the incoming air and maintains the outgoing air accurately at the required pressure. The air supply is directed through an orifice plate so that when a sprinkler head is activated, the air supply will not interfere with the operation of the dry valve.

It is recommended that a low pressure alarm valve is installed on dry pipe systems or other air supervised piping systems to monitor the air pressure and signal an alarm if it falls below a predetermined level. The activation of a sprinkler head will cause the system pressure to drop to the point where the dry pipe valve will trip causing the system to fill with water.

Key Features

  • Norgren pressure regulator to suit application.
  • T-handle ball valves for test and isolation.
  • Glycerine filled pressure gauge to suit application.
  • Galvanised union with brass orifice plate.
  • Spring non return valve.
  • All galvanised fittings and pipe work, 15mm/½” standard, spray painted in protective hammer finish.

Additional Options

  • Lockable ball valves, with or without locks.
  • Air filter with drain.
  • Polypropylene mounting board.
  • Unistrut mounting frame.

Please state your pressure control requirements when ordering; all units are quickly built to order.

The photos illustrate only the most popular models; please contact us if you require something different – we pride ourselves on our responsiveness, flexibility and quality and are therefore happy to manufacture to your own requirements wherever possible.

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