Brass?

[Eli27]

Here we go,,, diesel, can I use brass fittings? Long term and short term? Will the brass destroy my leYman injectors?

 

[KnotYet]

I prefer ferrous fittings (never galvanized) but have used brass when that was all I had on hand.
Some people caution that diesel can 'attack' brass but I have not witnessed that.
As far as destroying your injectors, I don't see how that would happen.

 

[psneeld]

I have never had an issue with brass and diesel fuel, the only caution I have heard is don't use brass nipple threaded into the block as they are not strong enough for the vibration.

That would go for any fitting that might be subjected to one more steady or heavy and leveraged end and the other end vibrating.

 

[jleonard]

I have never had an issue with brass and diesel fuel, the only caution I have heard is don't use brass nipple threaded into the block as they are not strong enough for the vibration.

That would go for any fitting that might be subjected to one more steady or heavy and leveraged end and the other end vibrating.

I always use hydraulic fittings in vibration applications as they are thicker.
Also have used brass fittings in many places in the fuel system.

 

[O C Diver]

Brass fittings are very common in boat fuel distribution manifolds and polishing systems. As mentioned strength and vibration resistance are the concerns if mounted on the engine. The other consideration is wall thickness. Pressure ratings vary widely with some to 3,000 PSI. It would be important to buy from reputable suppliers if the intended use is over 100 PSI.

Ted

 

[C lectric]

I don't use extruded brass fittings anywhere on my boat any longer except in the drinking water system. However, I never had a problem with the brass ftgs. in that application.
At the very least use forged brass fittings as they are much stronger which means more resistant to on engine vibrations.

About two years ago I changed to steel hydraulic fittings and am still in the process as I change hoses. My boat is old enough now I am changing weeper hoses.

To be clear I have never had a problem with the fittings breaking but I also don't want to experience that.

 

[fgarriso]

Cummins uses brass fittings in the fuel systems. If they use them, I would think that they have tested them.