| 摘要 |
A hydraulic loading valve 10 comprises a housing having an axial bore therethrough. A spring loaded valve member 16 is axially aligned within said bore and a check valve means 24 is located within the bore cooperating with the valve member such that flow from an outlet port 22 through the bore to an inlet port 20 is prevented when the spring loaded valve member is in a first position and permitted when the spring loaded valve member is in a second position. A relief valve means 46 is in communication with an internal bore of the spring loaded valve means. A pilot means 38 is in connection with the end of the central bore for moving the spring loaded valve member against the spring 50 and into the second position to permit fluid flow from the outlet port to the inlet port to release a load. <IMAGE> |
