A type of valve in which the closing element (the gate) is a disc that moves across the stream in a groove or slot for support against pressure A gate valve has relatively large full ports and a straight line flow pattern Very little pressure drop however subject to leakage if sealing surfaces are scored or marred or if debris becomes lodged in grove (081)
A valve which employs a sliding gate to open or close the flow passage The valve may or may not be full-opening
A valve with the closing element that is a disc which is moved across the stream, often in a groove or slot, for support against pressure