{TAIL ~ The bottom} of 5 micron filter 74 is connected through normally closed valve 132 in line 134 back to {HEAD ~ the chlorinator chamber} 
{ TAIL ~ The bottom } of 5 micron filter 74 is connected through normally closed valve 132 in line 134 back to { HEAD ~ the chlorinator chamber }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD