Duckbill Check Valves have low headloss and achieve the tightest possible seal for backflow operations, particularly at low flow rates. The flexibility of the Check Valve allows the valve to compress around trapped solids, providing a much better seal than flapgates.The Slip-On Rubber Duckbill Check Valve is designed to be efficient, quiet and tough. The check valves feature a one-piece elastomer and ply reinforced body, similar in construction to a truck tire. As a result, our check valves are not affected by rust, corrosion or UV.The valve’s simple design means there are no moving mechanical parts to break down or jam, reducing maintenance costs.Their revolutionary design eliminates the need for an outside energy source, will not warp, freeze, or clog.  This type of valve is ideally suited to marine outfall diffusers. The Slip-On Check Valves are versatile and can be installed either horizontally or vertically.Their virtually silent functionality make them great for any application.