Brass fitting safe to use with diesel

Clove · Jan 20, 2023

Branson 3510i, plastic nipple on the left side fuel tank broke off from the tank. Dunno how it happened...guessing snow/ice chunk might have caught it when I was snow blowing. Anyways, got the tank removed and looking to make a repair. Was thinking I'd drill the hole out, tap it/thread it and use a 5/16" barbed x ¼" MPT brass fitting with some 5 min epoxy to set it. I know the tank has to be impeccably clean for this to work, but when researching to see if a brass fitting would be ok to use, I'm getting very conflicting information...some say no problem at all, others say never use brass. So what gives? I was hoping to run down to the local Home Depot to pick up a fitting tomorrow and get the repair done...now I'm not so sure. Any advice appreciated.

Roadworthy · Jan 20, 2023

Brass would work, it won't spark. Many fuel and hydraulic parts are brass or bronze. In any case if it works it's worlds ahead of plastic in my mind.

07wingnut · Jan 20, 2023

Nothing wrong with brass. Just don't use it on the high pressure side to the diesel fuel system.

Death Row Dave · Jan 20, 2023

Diesel fuel : many years ago corrosive to copper. I no longer think this is the case . I have a brass 45* ell and short stub of copper attached to fuel line on my Power Wagon with 4BT Cummins , 145 K miles and still running at this moment .

You be the judge if it’s ok to use on a tractor

Williy · Jan 20, 2023

You can read this site: IMHO brass will work with
no problems and its cheaper than SS and no spark

Brass fittings and Diesel fuel

Can/will it cause me grief if I use brass or copper in the fuel system? Brass fittngs and copper tubing are less expensive and easier to find than stainless.

www.thedieselstop.com