所以阀门能完全关闭，气门间隙在操作机构内是必须的。
So that the valves can close fully some clearance is needed in the operating mechanism.
吹灰器的阀门内装有调整盘，改变调整盘与阀阀座环的间隙，可以改变吹灰介质的工作压力。请在吹灰之前现场调节。
There is adjusting disc in the valve. Change the distance between disc and seat ring can change the blowing pressure.
把白色的导气盖压入硅胶导气阀门。请确保导气盖和导气阀门之间没有间隙，在喂养前导气管的切口是翻开的。
Push the white vent cover onto the silicone vent as shown. Make sure: There is no gap between cover and vent, the slit si open before feeding.
请确保导气盖和导气阀门之间没有间隙，在喂养前导气管的切口是打开的。
Make sure: There is no gap between cover and vent, the slit si open before feeding.
请确保导气盖和导气阀门之间没有间隙，在喂养前导气管的切口是打开的。
Make sure: There is no gap between cover and vent, the slit si open before feeding.
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