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Posted by mike on March 18, 2004 at 17:30:03:
i have 3 boilers getting oil from a 1 inch line common header 4 inches of suction at line before header with only one boiler running 2 others on standby ,now at the suction line after i installed a vacumn gauge after the fuel oil filter i am now getting a reading of 14 inches of vacumn with a one half inch linefrom the header to the burner [new fuel oil filter installed ] burning 14 to25 gph is this sounding right should i increase the suction line size from half to ? or is this ok how do i find out how to size a fuel oil line thanks