CHECK VALVE QF-020-I 1/4'' TUBE – 1/4'' TUBE WATERRO The WATERRO QF-020-I check valve is a one-way check valve from the Quick Fit range, designed for reverse osmosis and water treatment systems. It connects two 1/4-inch tubes and allows water flow in only one direction. The check valve prevents backflow and helps protect membranes, pumps, pressure tanks and other system components. The Quick Fit connection enables fast, tool-free installation and a secure, watertight connection. The connection can be reused. Technical specification Parameter Value Product Quick Fit range check valve Model QF-020-I Connection A 1/4" Quick Fit tube Connection B 1/4" Quick Fit tube Valve type One-way check valve Flow direction One direction Application Reverse osmosis and water treatment systems Key benefits In-line one-way check valve 1/4" × 1/4" Quick Fit connections Prevents water backflow Protects RO membranes and system components Fast Push-Fit installation Watertight connection Reusable No special tools required Suitable for RO and water treatment systems