Polypropylene cam and groove coupling are made according to standard A-A-59326(original standard Mil-C-27487), size from 1/2″ to 4″. Black Poly Camlock Fittings are made from polypropylene reinforced with 25%-30% acid-resistant fiberglass, which makes PP Camlock coupling has excellent tolerance to most corrosive acids, bases, fertilizers, solvents, and wastewater. As a result, it is widely used in inhalation/discharge hoses for agricultural or industrial applications.
