The plumbing may be combined with {HEAD ~ the surge bleed system} to simplify {TAIL ~ the systems} and reduce weight and cost 
The plumbing may be combined with { HEAD ~ the surge bleed system } to simplify { TAIL ~ the systems } and reduce weight and cost
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH