Just after the point where the first bypass vacuum line 110 branches from the processing line 84, {HEAD ~ a second bypass line} 112, having air valve 75 and hand valve 73, is connected to {TAIL ~ the processing line} 84 on either side of an air valve 74 
is connected to
Just after the point where the first bypass vacuum line 110 branches from the processing line 84 , { HEAD ~ a second bypass line } 112 , having air valve 75 and hand valve 73 , is connected to { TAIL ~ the processing line } 84 on either side of an air valve 74
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH