Clock Spring

ClockSpring|NRI is a Houston-based manufacturer and provider of high-performance critical infrastructure construction and repair products and associated engineering support and training services. Our customers use our solutions to maintain, rehabilitate, and construct pipelines, natural gas distribution lines, high-consequence industrial pipe works, electrical grids, and civil structures. ClockSpring|NRI composite pipe repair systems and inline insertion valves are in use in more than 75 countries and include industry-leading products such as Clock Spring™, Syntho-Glass®XT, Scar-Guard®, Contour, and DiamondWrap® composite products, as well as the award-winning AVT EZ Valve™ for water and gas lines. All ClockSpring|NRI products are easy to install, cost-effective to deploy, and durable for decades.