Since 1972, Colonial Engineering, Inc. has manufactured and marketed quality butterfly valves and accessories to its customers. The Colonial Valve line has answered the need for reliable flow control for over 25 years. Our website allows you to view and print the dimensions and specifications, as well as important information on the design and installation of a plastic piping system. A detailed display of each product offered is available to you as well. Our excellent sales staff is available to answer any of our questions. Visit our website or call us today for more information!