Kenmore refrigerator filter replacement 9083

Dec 11, 2017 · To prevent a sudden change of pressure near the valve’s shut-off element, air and vacuum relief valves, or air vents, are installed just downstream of the valve to allow air to enter the line and prevent a vacuum from occurring. Therefore, the proper opening and closing of valves is fundamental to safe pipeline operation. An air/vacuum valve is the right fit for this application because it can rapidly expel large volumes of air and close when fluid fills the air valve. An air/vacuum valve can be piped to the top of the pump column so that when the pump is started, the air trapped in the pump column is expelled through the air/vacuum valve (Figure 4).