I HAVE HAD A NEW BOILER FITTED BY BRITISH GAS WITH A 22MM SUPPLY PIPE RUNNING ON THE OUTSIDE OF THE WALL STEPPING DOWN TO 15MM JUST BEFORE THE BOILER. I AM NOW HAVING A KITCHEN FITTED AND THE PLUMBER RECKONS ITS ALRIGHT TO TEE OFF OF THE BOILER SUPPLY PIPE IN 15MM TO SUPPLY THE HOB IS THIS CORRECT? ...
