国产公开人成免费_在线A一级毛片免费完整视频_亚洲欧洲日本视频在线_八戒八戒神马影院www_欧美亚洲另类丝袜综合网_99精品無碼人妻一區二區三區_一级做人爰全程视频在线看_精品一区国产VR_欧洲美熟女乱又伦视频免费_黄页免费在线播放

Complex air valve body is barrel shape, the inner parts of the valve include stainless steel float ball, lever and disc.This valve is installed in the pump outlet or water distribution line, used to remove the air collection in the pipe, in order to improve the efficiency of the pipeline and water pump, when the pipe once produced steel pressure, the valve quickly inhaled outside air, to prevent the pipeline due to negative pressure and damage.When the pipe begins to fill with water, the valve disc in the open position, for a large amount of exhaust, when the air exhaust valve filled with water, float ball rise and drive the valve disc close, stop exhaust, when the water in the pipe is normally transported, if there is a small amount of air gathered in the valve to a considerable degree, the water level in the valve drops, the air is discharged by the hole.When the pump is stopped, the water in the pipe is empty or negative pressure is generated in the pipe. At this time, the plug head is quickly opened and air is inhaled to ensure the safety of the pipeline.

Product model: CARX
Nominal diameter: DN25~200mm
Nominal pressure: PN1.0~ 2.5mpa
Applicable temperature: 0~80℃
Suitable medium: water
Main material: cast iron, ductile iron, carbon steel, etc