valve pot type piston pump

例句：

1. 1.The valve pot type piston pump is used to control the flow of oil in the engine.
   阀门式活塞泵用于控制发动机中油的流动。
2. 2. The piston pump is a crucial component in the oil filtration system.
   活塞泵是油过滤系统中的关键部件。
3. 3.The valve pot type piston pump has been proven to be more efficient than traditional pumps.
   阀门式活塞泵已被证明比传统泵更高效。