In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
new to oil couple questions
First on a Carlin burner s/s i am assumeing service man switch because looks like in series before the primary ? second not really oil guestion but if im adding a unit heater to one pipe system and one venturi/monoflow tees and cannot get the propper pressure differential from one tee do i just flip the tee on the return side or do i need a special tee for this?