These ball-type check valves are used forone-direction flow. They provide a simple, but effective, leak-Tight closure with minimum flow resistance. Checkvalves are available in brass, 316 stainless steel, and Monel metal. MAWP is 3000 psi for these check valves.The brass and stainless steel models are cleaned for allanalytical applications. The Monel models are available for corrosive gases.