Selection of Fluid Fittings

When selecting fluid fittings for flammable liquids, it is important to utilise Parallel Thread Fittings with Sealing Rings as a priority.

 

Marine Classification Societies and The Royal Australian Navy mandate the use of such fittings.

 

Tapered Thread Fittings are to be avoided due to the inability to specify a tightening torque, the reliance on a sealing agent or thread tape needed to seal the threads, and the reduced thread engagement as the fittings are disassembled.

 

An example of each is shown in the attached image.

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