{HEAD ~ A pipe connector} for making a plurality of first pipes communicate with {TAIL ~ a plurality} of second pipes so that a fluid may flow through the first pipes and the second pipes, comprising: 
communicate with
{ HEAD ~ A pipe connector } for making a plurality of first pipes communicate with { TAIL ~ a plurality } of second pipes so that a fluid may flow through the first pipes and the second pipes , comprising :
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH