In seconds, these polypropylene Quick-disconnect couplings provide fast, positive, leakproof connections for hose and pipe without threading, tools, or strain. For use when handling chemicals, other liquids, or dry chemicals. With adapter and coupler secured to the end connections, simply insert adapter into coupler and pull down cam arms to lock assembly. Made of glass filled polypropylene with EPDM gaskets, and 304 stainless steel handles. Not UV resistant and has a temp range of 0 to 150 deg F. Recommended pressure to 70 deg F Size 1/2-2 psi 100; to 70 deg F size 3 psi 50; to 100 deg F size 1-1/2 - 2 psi 50.