The City of Ponca City faced a real problem. They needed to install several (3) 24" (600mm) valves in their main feed pipeline. The City knew that if they had a main break on the main transmission pipe that most of the City would be without water and fire protection.
The City explored several options. The first being a traditional shutdown, but the area would be too great, notification of the public would be expensive, boil orders would have to be made and the threat of businesses and lack of fire protection would be a nightmare!
The 2nd option was line stopping the main, but this proved more costly and more time consuming as it would take at least be a week, also there would still be customers out of service and 6 more excavations would be required, due to thrust restraint issues.
The City of Ponca City then asked their main supplier of Distribution products, HD Supply (Formerly Water Products) if they knew of a solution for installing the (3) 24" (600mm) valves without loss of their water supply and fire protection? HD Supply is the exclusive distributor for Advanced Valve Technologies, Inc. (AVT) EZ Valve™ system. HD Supply sells and performs services for utilities and businesses in pipe sizes 4"-12" (100mm-300mm).
Since the City of Ponca City's problem pipe was larger then HD Supply had equipment for they recommended that the City hire AVT to perform the service. The City of Ponca City decided to install (3) 24" (600mm) EZ Valves™ to control their main feed pipes. By installing the (3) valves they could then control their water supply with no loss of service or fire protection to their customers.
Darwin Haney, Utility Maintenance Superintendent of Ponca City, stated that "By using the EZ Valve™ Insertion system, the City saved a tremendous amount of trouble. There were no press releases to issue to the public, no loss of fire protection and no loss of service at any time during the (3) 24" (600mm) EZ™ Valve Insertions".
Kevin Murphy, The President of AVT states that “Installing (3) 24” (600mm) EZ Valve™ insertions in three days is a new World Wide record”! It was determined that if the City lost the feed on this line, a large section of town would have been without water, so there could be no problems allowed. “By installing the EZ Valves™ in their distribution system and there was no effect on their day to day operations", stated Chris Murphy, the AVT Field Supervisor. “It was amazing as to the speed and ease of installation that both the City Maintenance personnel and the AVT crew working together achieved", Murphy stated.
The end product is an AWWA material specified valve,with the same number of turns as a standard valve, Ductile Iron castings, EPDM rubber gaskets and RW Gate. Stainless Steel fasteners are the standard with the EZ™ Valve.
Link to Story Published in Water & Waste Digest
Official Press Release