junction of drain pipes
weeper drain;weep drain;drainage ditch;drain ditch
drain castinghollow casting drain tile
modified poly(vinyl chloride) pipes(PVC-M pipes)
oriented PVC pipes(PVC-O pipes)
unplasticized poly(vinyl chloride) pipes(PVC-U pipes)
active drain hold-up tank
active-effluent drain pipe
aftercooler air chamber drain