ASTM A995 4A Check Valves are precision-engineered check valves meticulously crafted to meet the stringent specifications outlined in ASTM A995 Grade 4A. Constructed from cast duplex stainless steel components, these valves are specifically designed to allow fluid flow in one direction while effectively blocking backflow. They are highly regarded for their exceptional corrosion resistance, high strength, and toughness, making them indispensable in demanding industrial applications.