Profile: Madden Manufacturing, Inc. designs and manufactures diaphragm type metering pumps for chemicals & industrial steam system equipment. The primary plant operations are the precision machining of parts from castings and bar stock, assembling & testing of finished equipment. Pressure vessels for boiler blowdown heat recovery systems, intermittent blowdown tanks and separators are built to ASME code specifications and carry the National Board of Boiler and Pressure Vessel Inspectors U stamp and serial number. Products include chemical metering pumps, metriflow™ brand, diaphragm type chemical feed systems packaged to include pump, tank, piping & controls, metering pump accessories, mixers for chemical tanks up to 5,000 gallons, boiler blowdown flow control Orifice Meter™ Liquid sample coolers, miniature liquid to liquid heat exchangers, pump seal flush coolers, boiler continuous blowdown heat recovery systems, boiler intermittent blowdown tanks and separators.