Designed for use as a replacement in most plastic and ceramic exposed and concealed cisterns. Compact delay fill models save water and support BREEAM by only allowing a cistern to start refilling once flushing is complete. The unique inlet float arm makes it impossible for the float to become detached. This high quality inlet valve has two built in backflow prevention devices making it one of the safest valves available. Hydroflo Telescopic delay fill bottom inlet valve with brass tail.