The H2Flow FlowVis flow meter and check valve is designed for compatible plumbing applications where both flow monitoring and one-way flow control are needed. A combined flow meter and check valve is useful because it helps show the system flow rate while also reducing the chance of backflow through the line.This replacement is especially useful when the original assembly is damaged, leaking, sticking, inaccurate, or no longer reading or sealing correctly. Matching the correct 1-1/2 inch slip configuration helps preserve intended fit and dependable performance.The FV-C-15 is a practical service part when a compatible plumbing system needs a combined meter and check valve to restore dependable monitoring and flow control. H2Flow FlowVis flow meter and check valve 1-1/2 inch slip configuration Combines flow visibility with one-way flow control Useful when the original assembly is leaking, sticking, or inaccurate Supports cleaner and more dependable system performance