The VMX Pumping System is designed for use in low pressure steam heating systems to collect and return condnesate to the boiler. The VMX is available as a simplex or duplex design. Receivers are available in cast iron or welded steel construction. Cast iron receivers are available in 6, 15, 21 and 45 gallon sizes. Welded, copper bearing steel receivers are available in 10, 20 and 45 gallon capacities. Lockwood’s duplex units are used where heavy loads are present or when a stand-by pump is required.