Spare Heatrae Sadia Cold Water Combination Valve (Part Number: 95605869/95605021) for Heatrae Sadia Megaflo Unvented Cylinders. OEM alternative from genuine part manufacturer. Pressure Reducing Valve and Isolation Valve to suit the Heatrae Sadia Megaflo HE. Please note this does not include the Pressure Relief Valve and may require pipe work alterations.