This JG Underfloor Speedfit mixing valve unit is compatible with the brand's Speedfit underfloor hitting systems. Product features Compatible with Speedfit underfloor heating systems Technical specifications Brand JG Underfloor Finish Galvanised Length (M) 0,29 Length (mm) 290 Material Type Ductile Iron Range speedfit Range Name Speedfit Range Type Wet System Underfloor Heating Valves Weight 815.