Apparatus for centralized pressurization and depressurization of aircraft hydraulic reservoirs

摘要

A single manifold assembly is located in an easily accessible hydraulic servicing bay. The assembly includes a manifold (2) with an inlet port (4) having an integral check valve (8). A plurality of branch conduits (18), one for each reservoir, communicate with manifold (2). A two-way shut-off valve (20) is located in each conduit (18). Each valve (20) has a handle (22) for manually moving it between an open and a closed position. Each conduit (18) communicates with its corresponding reservoir. Manifold (2) includes a manual bleed valve (12) and an automatic relief valve (16). By selective positioning of the shut-off valves (20) and operation of bleed valve (12) and inlet port (4), any or all of the reservoirs may be depressurized or pressurized. Preferably, an automatic bleed valve (26) is provided for each individual reservoir. A single gauge (30) mounted on manifold (2) provides pressure readings for any one of the individual reservoirs by selective positioning of valves (20 ).