五月婷婷中文_总裁与秘书啪啪日常H_精品视频国产香蕉尹_亚洲图片日本视频免费_男女乱滛免费视频网站_藏经阁91福利私人试看_99久久国产综合精品一级_国产精品午夜福利电影_另类福利亚洲丝袜激情在线_免费在线观看最新理论片

If the exhaust valve of vacuum pump works abnormally, the vacuum degree will be greatly affected. Therefore, it is very important to disassemble and repair the exhaust valve of vacuum pump. Today, I'd like to sort out the procedures for disassembling and repairing the exhaust valve of vacuum pump.

1. When disassembling and repairing, drain part of the pump oil to make the oil level lower than the oil window.

2. Remove the oil window, take off the valve piece (or valve bowl, ball ball), check whether they are in good condition, flat and elastic, whether the assembly is firm and appropriate, and whether the bullet cover is perforated.

3. In general, the valve plate should cover the vent hole smoothly.

4. The valve plate of large pump is mostly made of steel, which is pressed by spring. Check whether the valve plate is damaged and whether the spring is too hard, which makes it difficult to jump.

5. Oil resistant rubber valve piece class should check whether they are deformed.