The Shipco 50EMVD22-20-1 is an “Economical Make-up Vertical” boiler feed pump designed to collect return condensate from steam systems and return it to the boiler. Water levels are maintained by a mechanical make-up water valve with stainless steel float and rubber fitted sealing face. Shipco boiler feed units have 3/16" black steel receiver tanks with gauge glass assemblies. The pumps are bronze-fitted. The 50EMVD22-20-1 has a 1" connection and a 1/2 HP, 3500 RPM, 115v single phase motor. The 50EMVD22-20-1 is a duplex unit, with a 33 gallon tank, capable of pumping 22 gallons per minute at 20 psi and 125 BHP.