22mm Compression Mixing Valve Item Description: A thermostatic blending / mixing valve mixes a hot water supply with a cold water supply to provide the desired amount of heat. It is ideal for use in blending hot and cold water where a stable output temperature is desirable. Often used in underfloor heating applications to blend the flow and return. Item Specifications: Max working pressure: 10 bar Temperature range: 35°C – 65°C Connection size: 22mm Connection type: Compression Item number: ZL-2318.