Shut=off valve for hot gas line e.g. for hot blast ducting - has arc-shaped perforated plates near gas inlet aperture to ensure uniform distribution of cooling gas as it passes through plate

摘要

Valve has a plate (1) through which cooling gas is passed. Uniform distribution of gas through the interior of the plate is ensured by several arc-shaped perforated plates (10, 11, 12) which are positioned at a distance from each other in front of the gas inlet aperture (8). The centre of the arc is an axis of the aperture. ADVANTAGE - Low cost, low pressure loss in cooling.