Inquiry (采购产品): New Invention and Patent, Tri Valve Tri Valve Tri Valve - Backflow Preventer Contractors, Utility water works can install a tri valve directly to an existing potable drinking water main and place a temporary backflow preventer assembly to the tri valve to fill the new water main with water for on site use and testing purposes. At all times there would be no need for concern of the existing public drinking water system being contaminated. When all testing requirements are completed on new site the (BFP) temporary backflow preventer is removed, no sleeves or tie in will be required. Saves man hours, huge amounts of good water, insures the quality of existing potable water. More information can be found on the following web site: www.uspto.gov Patents Search. Patent number 7121293. If interested in this product please contact Valve Distributors and Manufactures. Thanks Guy & Gail Walter 941-745-2427 If you can not pull up the images go to www.alternatiff.com and install tiff file. Once you get images use yellow next page arrows to pull all six images. **** Hidden Message ***** Guy Walter 6419 3rd Ave. N.E Bradenton, FL 34208 USA Company: New Invention and Patent, Tri Valve Phone: 941-745-2427 E-mail: gwalters6@tampabay.rr.com **** Hidden Message ***** gwalters6@tampabay.rr.com