The portions shown in broken lines in the figures depict unclaimed environmental subject matter, are for illustrative purposes only, and form no part of the claimed design. Similarly and where applicable, unshaded portions that appear between broken lines or beyond boundary or break lines in the figures form no part of the claimed design and indicate that a specific width, height and/or length forms no part of the claimed design. A circular boundary line has been added around the inlet opening to indicate that just the portion of the fluid chamber/volute around the water inlet is being claimed.