Sounds daft but here goes just a quick one, my brakes are from a cortina at the front and metric the back are rs 2000 inperial and will need a three way union.
Can i use pipes with imperial ends for the brakes and metric for the 3 way union?

No reason why you can't mix and match the brake pipe nuts on the pipes. The imperial and metric flares are slightly different but in practice either flare will seal with kunifer (or copper) pipes.

adrian

yes , as long as the pipe is the same diameter. I wasn't aware of the flare being different but as ^^^ the softer metal will squeeze down to seal so no worries there.

thanks