The Eldon James Corp., of Loveland, Colo., introduced the single barb fitting in 1987. For water quality applications, the company announces a complete line of NSF-certified, single-barbed and threaded fittings incorporating a unique manufacturing process that eliminates mold parting lines on the barb’s surface. Leak potential associated with other barb configurations and push-on fittings is greatly minimized with the design. Connectors are available in natural nylon, natural kynar, and natural high-density polyethylene.