3. In Qld we are required to comply with AS 3500 – As 3500 requires all plumbing fittings & copmonents to comply to MP52 – this requires Standards mark etc. if a component has Standards Mark or Watermark it complies.
4. A new Standard does not make a previously approved fitting or component illegal
5. Dont know – havent got a copy
6. Dont Know – havent got a copy