{HEAD ~ The two discharge sides} of valve 208 are connected to a front hose 228a and to {TAIL ~ the back hose 228b} 
are connected to
{ HEAD ~ The two discharge sides } of valve 208 are connected to a front hose 228a and to { TAIL ~ the back hose 228b }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL