| 摘要 |
<p>PURPOSE:To build a load check valve into a valve body as integral part thereof, and reduce the number of parts items. CONSTITUTION:A pair of valve ports 69 and 70 are formed in a valve body H3, and load check valves 49 and 50 are built into the the ports 69 and 70. In addition, the springs 71 and 72 of the load check valves 49 and 50 are pressed with another valve body H2.</p> |
