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I'll be piping a 275 gallon roth outdoor oil tank to my boiler, 6' below in the basement. I'd like to know if I should go with a two pipe system, or 1. Do I need a shut-0ff valve on the oil tank or will the firematic safety valve at the burner just before the filter be sufficient. Do I need a check valve?
Should I go with the 3/8 od plastic covered soft copper tubing?
I know I'm asking lots of questions, but seems like I'm getting all different information.