• Designed for Airline Ring Main applications
• Safe Secure and leakproof
• Easy to install
• Easy to disconnect and reconfigure the system
• Fittings also suitable for copper or aluminium pipe
• Many millions of fittings in use
• Collet cover makes fitting tamperproof
• Working Pressures 0 - 10 bar

Threaded steel tube
A time consuming and difficult process.

Solvent Weld
Long installation time, system needs to be shut down for drying.

The John Guest Way
One simple movement provides a secure connection system immediately ready for use.
Also suitable for copper or aluminium pipe.

Easy to use push-in system for Air Line Ring Mains
The John Guest range of push-in fittings and pipe provide the ideal  connection from compressor receiver to air line service components through to complete ring main and take off points. Using the John Guest system a compressed air ring main can be installed quickly and easily, considerably reducing the the need for specialist staff and providing much reduced production down time.
No need to prepare threaded pipe or apply solvent, all the connections can be made with a simple push-in action. The system is then immediately ready for use. Complex systems can be assembled much more rapidly than with traditional methods and because they are also easy to disconnect, systems are easy to alter or extend.
The fittings are produced in either a tough engineering plastics material or in brass in sizes 12mm to 28mm. They are intended for use with John Guest nylon pipe but can also be used with copper or aluminium pipe.

Rigid Nylon Pipe
John Guest's new rigid unplasticised nylon 12 pipe is especially suitable for Air Ring Main situations. It is offered in BLUE with BLACK available on special request, (in packs of 20 x 3 metre lengths) (28mm in packs of 10 lengths).
It can easily be cut to length using the John Guest pipe cutters and is capable of withstanding temperatures and pressures well in excess of normal working conditions.

Installation has never been easier
To make a connection, the tube is simply pushed in by hand: the unique patented John Guest collet locking system then holds the tube firmly in place without deforming it or restricting flow.

Cut pipe square
Cut the pipe square ensuring it is free of score marks. For Speedfit plastic pipe we recommend use of one of the John Guest pipe cutters. Do not use a hacksaw. To avoid damage to the 'O' ring, make sure burrs and sharp edges are removed.

Do Not use a hacksaw

Making a connection
Fittings and pipe should be kept clean and undamaged before use.

With the fitting clean and undamaged and the pipe cut square as described on the opposite page, you are now ready to make the connection.

Push up to pipe stop

Push the pipe into the fitting, to the pipe stop. The collet (gripper) has stainless steel teeth which hold the pipe firmly in position whilst the 'O' ring provides a permanent leak proof seal.

Pull to check secure

Pull on the pipe to check it is secure. It is good practice to test the system prior to leaving site and/or before use.

Disconnecting
Push in collet and remove pipe

To disconnect ensure the system is depressurised before removing fitting. Push in collet squarely against face of fitting. With the collet held in this position, the pipe can be removed. The fitting can then be re-used.

New 28mm Fittings
The connection could not be easier to make.

The range has now been extended to include 28mm.
Like all smaller size fittings, the new larger size has a collet with stainless steel teeth and an 'O' ring to provide the unique grip and seal connection. The fitting can also be demounted and used again without the need for replacement parts.

As with other sizes, the pipe should be properly prepared and inserted fully into the fitting (to the end of the internal tube stop). By turning the screw cap by approximately a 1/4 turn (2 clicks can be heard) the collet is locked in place and further compression of the 'O' ring on the pipe is achieved. It will be noticed that by locking the collet in place there is reduced lateral and sideways movement of the pipe.

And just as easy to disconnect

To release the pipe from the locked position, turn the screw cap anti-clockwise approximately 1/4 turn. Now it can be released like a normal Speedfit connection by pushing in the collet and pulling the pipe out.