The vent valve comprises an air vent screw, a spring and a valve ball which leans against the channel under the acting force of the spring. 所述排气阀包括一排气螺钉、一弹簧、一钢球,阀球在弹簧作用力下抵靠通道上。
The function to dispel the odor is achieved by a deodorized pipeline and an outside vent channel, which is connected with a special vent device. 除臭功能是在坐便器内部增加了除臭通道及外部的排气通道连接至专用的排气装置。
Type And Property Evaluation Of Ordinary Vent-Channel 常用通风管道的种类及性能评价