The mains supply to my cold water cistern is from 2x 15mm pipes which join at a T to feed a single 15mm pipe which then connects to the valve.
Am I right in thinking that having the 2 supplies to the T won't make any difference to flow because they end up going into a single length of 15mm piping, but if I replaced this section with a 22mm pipe it would make a difference?
Am I right in thinking that having the 2 supplies to the T won't make any difference to flow because they end up going into a single length of 15mm piping, but if I replaced this section with a 22mm pipe it would make a difference?