Description AQUA SURE 50mm Inline Non-Return Valve (Large) The AQUA SURE 50mm Inline Non-Return Valve is engineered to prevent reverse water flow from returning to your pump or filtration system. It provides smooth, unrestricted flow during operation and automatically seals shut once the pump stops—delivering dependable backflow protection for ponds, filters, and water installations. Key Features Includes 2 × 50mm solvent weld hosetailsSuitable for flexible hose sizes:30mm, 40mm, 50mm(See stepped hosetail chart for guidance) Automatic non-return actionValve seals instantly when flow stops, preventing backflow Non-restrictive flow designEnsures maximum efficiency and pump performance Threaded body with retaining nut systemAllows secure sealing and simple, tool-free removal Ideal for pond systems, filters, pumps, and general water equipment How the AQUA SURE Non-Return Valve Works During operation, the valve allows free water movement through the system.When your pump stops, the internal flap automatically closes, creating a watertight seal that prevents water from travelling backward. The threaded retaining nut design allows the hosetails to be removed quickly and easily — perfect for cleaning, inspections, or replacing components without cutting any pipework. Conversion Kit (Sold Separately) If you require connection to rigid pipe or fittings, you will need the Inline Non-Return Valve Conversion Kit.This kit is sold separately. Spinner nut OD: 56mm — suitable for 56mm(ID) bends, tees & pump fittings Includes a 56mm–56mm straight connector for rigid pipe Still allows full removal for maintenance by simply unthreading the spinner nut What’s Included 1 × AQUA SURE Inline Non-Return Valve (50mm) 2 × Retaining Nuts 2 × Sealing O-Rings 2 × Stepped Hosetails
