Client: Kent County Water Authority
Produit: VAG CHECKtronic Pump Safety Valves, GA Surge Relief Valve
The Kent County Water Authority supplies and distributes water services to residential, commercial, industrial, and other consumers in Kent County and parts of Cranston, Scituate, and North Kingstown, Rhode Island. The system contains approximately 404 miles of distribution and transmission mains, six active elevated storage tanks, two main transmission pumping facilities, four pressure booster (pump) stations, four wells, one 2.4 million gallon a day groundwater treatment plant, 2,339 public fire hydrants, and 128 private fire hydrants.
The distribution system is served by gravity as water flows from elevated storage tanks to customers. The system's tanks are replenished by transmission pumping. Tank storage continues to provide water during power outages.
The rehabilitation of the Clinton Avenue Water Pump Station included extensive mechanical, electrical, structural, architectural, and various other site improvements. The project increased the station's pumping capacity from 12 MGD (Million Gallon per Day)to 33.5 MGD (5,283 m3 / hr) and added the capability to pump to a new higher-pressure gradient.
The consulting engineers, C&E Engineering, chose the VAG CHECKtronic Pump Safety Valve for its capability to control pressure surges associated with pumping operations at the higher gradient. The flow efficient design, tight seating and integral fail-safe check feature also had an impact on the decision.
A GA Surge Relief Valve was also specified for protection against excessive pressure surges resulting from unexpected pump shutdowns.
GA Surge Relief Valves have a full ported, differential piston design to provide positive closing power at any working pressure. The large, sensitive pilot opens the valve quickly in response to an over-pressure condition, and closes slowly at an adjustable speed once pressure subsides.
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