UK plumbing. What does PT1 and PT2 refer to in relation to water supplies?
You may be referring to BS 7291 Part1 and 2 which relates to H&C thermoplastic pipes and fittings If so try this link:
http://standards.mackido.com/bs/bs-standards24_view_6167.html
You may be referring to BS 7291 Part1 and 2 which relates to H&C thermoplastic pipes and fittings If so try this link:
http://standards.mackido.com/bs/bs-standards24_view_6167.html
References :