ELGAS Knowledge Hub

How to connect and disconnect your appliance to LPG supply

30 Aug, 2023 | Residential LPG

In this article:

Quick bayonet guide to connect and disconnect your LPG appliance's gas supply
connecting and disconnecting LPG appliances

A gas bayonet is an outlet used to supply LPG to many appliances, such as gas heaters, without the need to use an additional gas cylinder. The bayonet outlet is plumbed into the gas supply from your existing LPG cylinder and is low-pressure, making LPG safe to use for homes and businesses.

Gas bayonet fitting – How it works.

A female gas bayonet fitting can be floor or wall mounted. These BSP thread fittings provide a quick connection from the gas supply to your indoor gas appliances. Using LPG or natural gas to fuel appliances such as a portable gas bayonet heater is generally more economical than resistance electric heating.

Popular gas heaters in Australia include makes such as the Rinnai Avenger gas heater. Portable gas heaters are also used in camper vans, motorhomes, and holiday homes.

In summary:

  •  A male gas bayonet hose fitting can connect your gas appliance, such as a gas bayonet heater, to a fixed female gas bayonet wall socket fitting that is attached to the gas supply.
  • The male gas heater bayonet fitting is attached to the end of the gas bayonet braided hose.
  • The female gas bayonet wall socket fitting is connected to the gas supply line and is affixed to the wall or floor.
  • A male gas bayonet hose makes the gas bayonet fitting connection by pushing in and twisting clockwise to lock it in place.
  • For gas bayonet fitting removal, you push in slightly, turn anti-clockwise and then pull the male gas bayonet fitting out.

Male gas bayonet fitting

The male bayonet fitting is affixed to the end of the stainless-steel braided bayonet hose, which is attached to the gas heater. It has two push-and-twist slots for engaging the two locking lugs on the female gas bayonet wall socket fitting. It also has a protrusion that pushes on and opens the automatic gas valve when the male gas bayonet fitting is inserted and interlinked. The on/off gas valve is shut off when the male fitting is disconnected.

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    Gas bayonet fitting installation

    The gas bayonet fitting installation must always be done by a licensed gas fitter. The female gas bayonet fitting installation is done either through a wall or the floor and connected to the gas cylinder piping. The male gas bayonet fitting installation is just a matter of attaching it to the end of a gas bayonet hose, which is typically done by the hose manufacturer. There are various components that may be required to complete the job of connecting a heater. These include:

    • Bayonet hose
    • Bayonet socket: angled or straight in brass, chrome or stainless steel
    • Bayonet adaptor (male)
    • Bayonet fitting (male)
    • Wall bayonet
    • Mounting bracket

     Inspect & clean gas bayonet fittings.

    It is important that gas bayonet fittings are clean and free of any dirt or debris before trying to connect them. Grit or debris can result in an inadequate connection and cause the gas heater bayonet fitting to leak. You should periodically inspect the gas bayonet hose for any damage or degradation. Call your gas fitter to make any needed repairs.

    Disconnecting the gas heater or cooker

    To disconnect a gas heater bayonet fitting you reverse the process used in connection. For gas bayonet fitting removal, you push the male fitting in slightly and turn it anti-clockwise to disengage the locking lugs and then pull the male fitting out. There may be a small whiff of gas during gas bayonet fitting removal. This is normal, as there may be a small amount of residual gas in the gas hose supply line.

     If you continue to smell gas

    If you detect a continuous or ongoing leak, you should turn off the gas and disconnect the gas heater. If you have an ongoing problem, you should always call your gas fitter. Never attempt your own gas repairs or allow an unqualified person to try to fix it for you.

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