• Valves are suitable for use in plastic or metal tanks.<br />• Perko's new patent pending "Flap Valves" fit inside the pipe.<br />• In-Pipe ICV Valves install on standard 1-½" or 2' fill pipes (diesel only) near the fuel tank connection.<br />• Eliminates the need to modify the existing plastic tank fill pocket.<br />• Replaces in-pipe ICV valves, eliminating the need for four hose clamps and two leak points.<br />• Enables a full 18 GPM flow rate.<br /><br />