API 6D Swing Check Valve

An API 6D Swing Check Valve is a type of check valve designed and manufactured in accordance with the American Petroleum Institute's specification API 6D, which pertains to pipeline and pipeline valves within the petroleum and natural gas industries. These valves comply with requirements for design, manufacture, assembly, documentation, and testing. Swing Check Valves, as specified by API 6D, feature a hinged disc or "swing" that permits fluid flow in one direction while preventing backflow. They are commonly used in pipelines to ensure unidirectional flow, thereby preventing reverse flow and providing essential protection for pumps and other equipment.