High level work

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.