浮阀塔相关英文资料

The Valve Tower

A tower built up within a reservoir to house the control valves of supply pipes drawing off water at different levels.

The valve tower or outlet tower houses the intakes for the supply pipe to the filter house, the compensation water pipe back to the River Hodder and the scour pipe which is used to help remove silt build-up in the reservoir or to release large quantities of water in an emergency situation.

The valve tower is 110 ft. from culvert level to control platform and is 10 ft. in internal diameter. It is concrete lined and faced externally with stone quarried at Jumbles Quarry and cut and dressed in the mason's yard below the site of the Filter House. It is sunk through the hillside for 31 ft. and rises above ground level for 79 ft. There are three draw-offs for supply controlled by suitably geared valves fixed at 72 ft. 6 ins. (bottom draw-off), 42 ft. 6 ins. (middle draw-off), and 18 ft. 6 ins. (top draw-off) below top