A BS EN 1984 Gate Valve is a type of valve designed to meet the specifications outlined in the BS EN 1984 standard. This standard specifies the requirements for steel gate valves that are wrought, cast, or fabricated, and are equipped with various end connections such as flanged, butt welding, socket welding, or threaded. Gate valves are mechanical devices used to control the flow of liquids or gases by either fully opening, fully closing, or partially obstructing passageways within a system.