QF-004B-L 3/8'' TUBE – 3/8'' TUBE WATERRO QF-004B-L is a 90° Quick Fit connecting elbow fitting designed to connect two 3/8-inch tubes in reverse osmosis and water purification systems. The Quick Fit fitting enables fast, tool-free installation, a secure watertight connection and reuse of the fitting. Technical specifications Parameter | Value Product | Quick Fit connecting elbow fitting Model | QF-004B-L Connection A | 3/8" Quick Fit tube Connection B | 3/8" Quick Fit tube Configuration | 90° elbow Application | Reverse osmosis and water purification systems Key advantages 90° connecting elbow design 3/8" Quick Fit tube-to-tube connection Fast, tool-free installation Watertight connection Compact design Reusable fitting No special tools required Suitable for RO and water purification systems