Thermoplastic Valves, Inc.
53 South 7th St.
Emmaus, PA 18049
United States of America Phone: 610-967-6388 Fax: 610-967-6448 Toll-free: 866-242-5890 Email:tvi2@fast.net Website: http://www.tvivalves.com
N/A2-1/2" thru 3" Valves require a spacer to prevent the flapper from interfering with the pipe. TVI also recommends installing a spacer for the all the sizes to ensure the valve flapper has 100% clearance.