3/8 Inch Flow Regulator 4pc

Each unit measures 3/8 inch (approx. 9.5 mm) in connection size, with compact dimensions suitable for standard underfloor heating manifolds. Constructed from durable metal for long-term reliability in hot water systems. Set includes four identical flow regulator units — no additional accessories or mounting hardware included. Designed for precise manual adjustment of water flow per circuit in underfloor heating manifolds, enabling balanced heat distribution across rooms or zones. Features an integrated visual flow meter for real-time observation of water movement, supporting proactive system tuning and troubleshooting. Compatible with common manifold configurations used in UK and EU residential underfloor heating installations, including both new builds and retrofits. Ideal for installers and homeowners seeking consistent thermal comfort while reducing reliance on boiler cycling. Use to equalise flow between circuits of varying lengths or heat loads — especially beneficial where floor areas differ significantly (e.g., hallways vs. bedrooms), helping avoid overheating in short loops and underheating in longer ones.