Couplings are used to connect the hoses. The coupling set consists of two halves inserted into the soft hose of the pipeline, connected with collars and bushings. Couplings manufactured by the American company US Couplings and are made of anodized aluminum alloy.
They are lightweight, and due to the special coating are not the subject to wear and corrosion. Able to withstand the required load up to 18 atmospheres. Due to the design features, couplings could rotate by 360 degrees, that prevents the hoses from twisting.