The air tank includes the body, safety valve, blow-offvalve, pressure meter and manhole, etc.
储气罐包括本体，安全阀，排污阀，压力表，人孔等。
2
Pig valve broken rear foot with a knife, and then every 1 cm bone Hengkan to blowoff even the skin.
将猪后脚用刀破瓣，再每隔1厘米横砍一刀至骨断皮连。
3
The manual withdrawal device realizes the withdrawal and discharging on the withdrawal objects by driving the bottom frame and the blowoffvalve to move up and down through the pull rod.