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A Division of i%W The Valve Maintenance xoerh turnvalves.com <br />Utility Products Division <br />600 Knightsbridge Parkway I Lincolnshire, Illinois 60069 <br />T: +1.815.943.47851 F: +1.815.943.5098 <br />866.392.1060 <br />April 10, 2018 <br />This letter serves as a sole source document for the Valve Maintenance Trailer (VMT) & Valve Maintenance Skid <br />(VMS) line of products (including the Hydro -Excavation units) manufactured by E.H. Wachs, Utility Products Division. <br />The VMT/VMS equipment and accessories are designed, manufactured, assembled and distributed solely by E.H <br />Wachs. The design of this tool is so unique; it has been awarded multiple US patents: <br />Patent Number 9,523,443 — Position locking system for valve operating machine <br />Patent Number. 9,188,240 — Positioning system for valve operating machine <br />Patent Number 9,038,667 — Dual arm valve operating machine <br />Patent Number 8,025,078 - Vehicle mountable arm for valve operating machine <br />Patent Number 5,937,373 (expired) Method of controlling an underground fluid flow system <br />Patent Number 5,381,996 (expired) - Valve operator <br />In the domestic US, regional distribution is through direct salesmen or exclusive territory dealers; for your area <br />Hassan Cruz is the only outlet to purchase these products. <br />To the best of our knowledge, no other vendor manufactures and distributes units with these unique feature sets. <br />Please let me know should you need further details. <br />Jeff Swiatowy <br />General Manager <br />Wachs Utility Products <br />117 <br />