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HWM

Water pressure management project saves Severn Trent 5 Ml/d

Multi-utility monitoring and telemetry specialist HWM has helped Severn Trent (ST) make significant water savings through a pressure management programme. Since April 2015, ST has installed 200 of HWM's Pegasus+ pressure controllers, saving 5 Ml/d in the process.

hwm web mktplce oct 17"The Pegasus+ has proven to be excellent value for money and it's given us a calmer network," said Graham Hollier, network pressure advisor at ST.

ST's network already contained thousands of HWM critical point (CP) and flow loggers. Linking Pegasus+ with its existing CP loggers allowed ST to operate the pressure controller in a learning mode. The data gathered automatically updated the product's online software, giving the water company a more optimised network than if the data had been entered manually on-site.

"It's a really good, simple system," explained Graham, "that allows us to see the data remotely, make adjustments and have good visibility as to where all the pressure controllers are in the system, which the guys here like using and which we've made considerable use of."

Since Pegasus+ allowed for detailed multi-point pressure relief valve (PRV) control without a flow logger, the water company was also able to save money by replacing some of its district metered area and flow loggers, which were often located next to PRVs.

www.hwmglobal.com