Airline Couplings to BS AU 138b:2000

There is an Emergency Line and a Service Line between each truck and trailer. Additionally there can also be an Auxiliary Line.

---------------------------------Truck Fittings ------------------------------Trailer Fittings

drawing of Composite Female and Self Sealing Valve ------ drawing of Male Coupling facing Left

Emergency Line---Female 'C' with Self Sealing Valve ----------------------------------Male

drawing of Composite Male 'C' and Self Sealing Valve ----- drawing of Female 'C' Valve Lifter Composite

Service Line -------Male 'C' with Self Sealing valve---------------------Female 'C' with Valve Lifter

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General

This standard combines the components of the older standard. Reducing the need for assembly and eliminating potential assembly errors or leakage.
All couplings have colour coded labels - yellow for the service line and red for the emergency line.
The outer sleeves of the female couplings are anodised aluminium and use the same colour code.
All steel parts are zinc-iron plated to 12 micron and black passivated. This typically gives protection against 320-400 hours of salt spray. This is well in excess of the 96 hours required by BS AU 138b:2000. Zinc and trivalent chromate is available on request.
All assemblies are pressure tested before dispatch.
Metric Thread is indicated by a groove on the hexagon.
Available in M22, M16 and 1/2" BSP
Steel Sleeved Female couplings are available on request.

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Illston and Robson Ltd