Founded in 1905, Crispin-Multiplex Manufacturing Company is a family-owned business that offers a range of air release, check and butterfly valves. The company offers products for water and sewage transmission in municipal, industrial and irrigation systems. It serves the industrial, mining, chemical, energy and processing markets. Crispin-Multiplex Manufacturing Company s clients include Anheuser-Busch, Sun Oil, Walt Disney, International Paper and Duke Power. The company provides dual air, deep well, foot, midget and negative pressure valves for clean water. It also offers combination sewer, universal sewer air release, and air and vacuum sewer valves. In addition, Crispin-Multiplex Manufacturing Company provides thermally activated and vacuum priming valves.