Male thread with closure

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The Guillemin or symmetrical fitting is of French origin. It is a quick coupling for transfer of fluids and pulverulent in pressures of up to 16 bar.
Checks the standard NF E29-572.
The fitting has 2 pieces in which one closes on the other making a sealed and fast coupling.
The female and male threads are of type BSPP (parallel gas thread).
They are used in 3 main materials: aluminum, AISI316 stainless steel and polypropylene with 30% glass fiber. The joints are usually NBR.

Common system in the petrochemical and food sector.