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