The ASME B16.5 Swing Check Valve is a check valve designed in accordance with the ASME B16.5 standard, which is the most common specification for manufacturing cast and forged steel pipe flange and flanged fittings. These valves feature a hinged disc or "swing" mechanism that permits fluid flow in one direction while preventing backflow. Typically used in pipelines, they ensure unidirectional flow, preventing reverse flow and safeguarding pumps and other equipment from damage.