Water systems in Liverpool’s 40-storey
West Tower are fed by booster sets in
the basement to ensure satisfactory
pressures on each floor. Honeywell
high flow DR300 pressure regulating
valves are installed after the booster
sets to maintain 19 bar in the domestic
supply mains and in the wet riser that
feeds the tower’s fire sprinkler system.

They also drop the wet riser pressure
to 9 bar for car park sprinklers.

The wet riser is protected by a
Honeywell SV300 safety valve which
relieves at 25 bar, discharging water
into a concrete reservoir serving the
wet riser, should the booster set
malfunction. Pressure to each floor is
regulated initially by a brass-bodied
Honeywell D06F compact PRV, sited
in a plant room on each floor.