The screening device is oriented below the distribution header vent so that floating hard body cleaning elements which impact the screen, float upward into the vent and over {HEAD ~ a weir} provided in {TAIL ~ the vent} 
provided in
The screening device is oriented below the distribution header vent so that floating hard body cleaning elements which impact the screen , float upward into the vent and over { HEAD ~ a weir } provided in { TAIL ~ the vent }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL