Specializing in Air Release, Check Valves and Butterfly Valves, Crispin-Multiplex Manufacturing Company has served the international valve industry since 1905.Our products are used in almost every application where water or liquid is moved from one place to another--from pipeworks in the municipal water industry to a wide range of applications across a variety of markets.We look forward to putting over 120 years of experience to work on your next valve project.