Maybe I should have explained better in my post. I've almost fitted our new kitchen. I contacted a registered corgi fitter last night to come and swap over our gas fitting, from a normal cooker fitting, to a fitting for a hob. I explained to the fitter that it needed doing this morning because the guy's were coming at lunch time to cut and fit our worktops, and, that the original brass fitting would'nt revolve in order to be removed after the worktop was fitted. So, he's been this morning and removed the old one and replaced it with a new one, but, because for obvious reasons the hob can't be fitted untill the work top is fitted and cut out, the new gas fitting/pipe has been capped off with a compression fitting rather than being soldered, which refers to my original question. Thanks.