| 摘要 |
<p>PURPOSE:To enable working fluid in a pump system to be completely collected by a remote control, by applying external force to a suction and a delivery valve in a pump so as to enable the valve to be opened. CONSTITUTION:A fluid passage, communicating with a pump chamber 32, arranges in a vertical relation a delivery valve mechanism and a suction valve mechanism. These valve mechanisms have each valve seat 48, 48 and ball valve 50, 50. An urging means of piston rod 52, 52 or the like, forcedly detaching this ball valve 50, 50 from the valve seat 48, 48, is provided. And this piston rod 52, 52 is longitudinally movably actuated by a remote control by urging force of pneumatic pressure, hydraulic pressure, solenoid, etc.</p> |
