| 摘要 |
PROBLEM TO BE SOLVED: To decrease a feed flow rate to a gear during low pressure operation, to save energy, and to reduce a cost through reduction of the number of the processing equipment of a pump housing. SOLUTION: A relieve valve 21 to be operated when a load pressure exceeds a set pressure and bleed a pressure to the low pressure side is incorporated in the spool valve 22 of a load pressure-sensitive valve 20. |
