A suitable one way valve device is disposed in a connection between the inlet and the cylinder, and another oppositely directed one way valve device is disposed in {HEAD ~ a connection} betweenn {TAIL ~ the outlet} and each cylinder 
A suitable one way valve device is disposed in a connection between the inlet and the cylinder , and another oppositely directed one way valve device is disposed in { HEAD ~ a connection } betweenn { TAIL ~ the outlet } and each cylinder
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH