||Yale quick-opening high pressure Pipeline closures are the industry leader. Yale closures were the first to include a threaded design for unparalleled safety and operating ease. With state-of-the-art manufacturing, outstanding engineering, superior quality control procedures and complete service after the sale, Yale Fig. 500® & Fig. 500R® closures are the smart choice for productivity, durability and safety. Yale Closures have over 60 years of reliable field service and are available in all sizes, lugged or lugless designs, and a flanged design.