The utility model is composed of a handle, a pull rod, a barrel body, a piston, a bottom plate, an oil inlet valve, an oiloutletvalve, etc.
本实用新型由手柄、拉杆、筒体、活塞、底板、进油阀、出油阀、等部件所构成。
2
This oiloutlet passage feeds oil from the outlet of the orifice to a space defined under the bottom of the valve housing.
石油出口通道，这饲料从口出口石油根据阀门的房屋底部定义的空间。
3
A one-way valve is installed on the oiloutlet pipe, and the utility model has the advantages of simple structure, rapid discharge and suction, convenient operation and low cost.