QUESTION 12 
(a)   Draw  an elevation of an above ground installation of a reduced pressure zone device
(RPZD) for the protection of a potable water supply.
(1 mark)

(b)  On your diagram in (a) label all the components and show the direction of flow.
(4 marks)

(c)   State TWO requirements for the relief valve outlet to comply with the New Zealand
Building Code G12 AS1.


(2 marks)
Total 7 marks

Linkback: https://forum.plumbers.nz/plumbing-exam-june-2007/23/question-12/166/