Munster Simms Engineering, better known under the product brand name Whale, is an independent company engaged in the design, manufacture, marketing and selling of pumps, valves, faucets and plumbing (water systems) for use in mobile or low voltage environments.The company designs, manufactures and tests its own products, largely but not exclusively, in injection moulded plastics for use in Leisure Marine; Recreational Vehicle and Caravan; and Industrial applications, many of which are in the toughest environments imaginable.