Rainbird Drainage Pop-up Valve with PVC Elbow, 4"
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<b>[Product Information]</b><br>
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<li>4" S & D Pipe (ASTM D2729 & D3034) - 4" Triple Wall Pipe</li>
<li>A pop-up water relief valve that is normally closed except when there is a build up of hydrostatic pressure</li>
<li>Manufactured from a structurally foamed High Density Polyethylene (HDPE)</li>
<li>Can be installed in either a vertical or horizontal position</li>
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