The pump includes a pump body having {HEAD ~ a plurality} of {TAIL ~ cylinders} therein, each provided with an inlet and an outlet 
of
The pump includes a pump body having { HEAD ~ a plurality } of { TAIL ~ cylinders } therein , each provided with an inlet and an outlet
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH