Valve disc(valve plug, valve needle)

活门（阀芯）

And the poking bar is inserted in the end of the valve plug and is communicated in the hopper.

所述搅拌棍插装在阀芯的端部，并通向料斗内。

Turns Check Valve Plug. Use a spoon or other tool through slot for more leverage when removing Jet.

旋转止回阀活塞。当移动喷嘴时，用勺子或其它工具穿过狭缝以产生更大的杠杆力。