Delivery from {HEAD ~ the pump} likewise comprises {TAIL ~ a valve box} 7 with a check valve including a tail 8 and likewise passing fluid in direction A 
Delivery from { HEAD ~ the pump } likewise comprises { TAIL ~ a valve box } 7 with a check valve including a tail 8 and likewise passing fluid in direction A
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH