Part 6 – Water Supply

6.10    Valves

Valves shall be installed as necessary to permit isolation of sections of the pipe network for maintenance purposes.  The spacing and location of valves shall be such as to limit the number of dwellings affected by a shutdown to no more than 30.

Valves shall be placed on at least two of the three legs leading from each T intersection. The maximum spacing of valves shall be 250 m.

Air release valves are not normally required on principal mains.  Automatic air release valves shall be installed when required by Council; they must be positioned so that ground water cannot enter the main should it become depressurised.