Brake Line Size

Does anyone have their brake system plumbed with -3 size fittings and hoses?
I'm thinking of plumbing my 9 from top to bottom in this size. Comments and opinions requested.

Don Broussard

RV 9 Rebuild in Progress

-3

Hello Don- I used -4 at the fuse, -3 line and fittings at calipers, also -3 on most lines at m/cylinders- no problems- there is very little flow through the lines during use- unless a leak develops!