Mike Miller
Active Member
I have searched the forums but perhaps not well enough. I am trying to determine what the appropriate torque is for a particular fuel line fitting. I am using an Andair fuel valve on my RV-9A, and TS Flightlines braided fuel lines (great product). I know what the required torque is for the AN fittings that supply fuel from the wings to the valve (75 to 125 inch pounds for 3/8" tubing). What torque value do I use for the stainless TS Flighlines braided hose fitting that goes from the fuel valve to the electric fuel boost pump? The reason I ask is because I know that the male fitting on the bottom of the Andair fuel valve is aluminum and the fitting on the stainless hose is steel. Is the flair inside the stainless fitting aluminum? If so, is it 3003 soft aluminum that "we" would typically use, or is it 5052 aluminum? I don't want to use too high of a torque and damage the Andair male fitting or not enough torque which would create a leak.
Certainly this is an easy answer for somebody who has been in the same situation before? What says you?
Thanks,
Mike
Certainly this is an easy answer for somebody who has been in the same situation before? What says you?
Thanks,
Mike