Here is the direct and official information regarding your request:
BS 8558: "Service pipes and water supply (buildings) – Code of practice" is the UK’s definitive guide for the design, installation, testing, and maintenance of water systems inside buildings. It replaced the aging BS 6700 in 2011 and has since undergone several amendments. bs 8558 pdf hot
: Guidance is provided on choosing materials (such as copper, stainless steel, or specific plastics) that can withstand constant high temperatures and resist corrosion or scale buildup. Here is the direct and official information regarding
A preview (first few pages) is available for free on the BSI website. Your local university library or public reference library may also provide free access if they hold a BSI subscription. bs 8558 pdf hot