PRESSURE REGULATING AND DISTRIBUTION DE-ICING VALVE ASSEMBLY FOR AIRCRAFT

摘要

The preferred embodiment relates in particular to pneumatic valves for de-icing aircraft surfaces, including, wings, struts, stabilizers, and engine nacelle. One embodiment is a pressure regulating and distribution valve (PRDY) that ensures proper inflation pressure levels and evacuation pressure levels are maintained at de-icing boots. One unique feature of this embodiment is that it can regulate both the de-icing boot's inflation pressure and deflation pressure by directly tapping into the engine bleed air compressor. This is an improvement over the prior art where valve manifolds use independently operating pressure regulators and vacuum ejectors to achieve the same result.