| 摘要 |
<p>The single acting piston pump (18) having a barrel (36) including a bore (38), an inlet (42) and an outlet (44) Check valves (70, 80) control the flow of fluid from the inlet to the outlet during reciprocation of a piston (50) within the bore (38). The piston (50) is driven by a cam (30) having a special profile cam surface. </p> |
