Fit: Designed for 15mm internal diameter fittings or pipes, ideal for showers, taps, and plumbing systems. Anti-Backflow Design: Prevents reverse water flow to protect pumps, valves, and plumbing from pressure damage. Compatiblility: Suitable for use with both hot and cold water systems, perfect for domestic or commercial showers. Durable Construction: Built with reliable internal components for long-term use and consistent one-way flow performance. Wide Application: Compatible with many shower enclosures, mixer valves, shower pumps, and water meter installations., Manufacturer: Briny River