Figure 31  General 13 – Pressure Reducing Valves

This water distribution system can deliver water from either or both of the two reservoirs, by opening or closing the motorized butterfly valves on pipes P2 and P7.

The pressure at the outlet points needs to be maintained at a minimum pressure of 15 psig (about 35 ft hd).

Pressure reducing valves have been used to limit the pressure in the lower parts of the system, to reduce pipework joint leakages while still maintaining the minimum outlet pressures.