Lockwood model VCM boiler feed systems are packaged, atmospheric-pressure, storage tanks built for commercial or industrial steam systems. They are typically used for lower pressure steam systems and/or projects where the tank needs to pass through a narrow access on the way to its final installation place. The storage tank blends makeup water, condensate returns, and water treatment chemicals before being pumped to the steam boiler. The tank is placed on the ground and the feed water pumps are bolted directly to the receiver to provide a compact, efficient design. A close-coupled centrifugal pump design with enclosed impeller is used.