Crispin-Multiplex Mfg. Co.

Crispin Valve begin in 1905 with an Air Valve designed by company founder, Clarence Crispin. Returning to Berwick, PA after earning an Engineering degree from Cornell University, Clarence wanted to increase output at the family-owned Berwick Water Company. Early attempts sought to pump water through a wood stave pipe that ran along the bed of the local Susquehanna River. However, the pipe kept collapsing, destroyed by an excessive vacuum that formed as the pipe drained. Clarence designed a valve that could release air from a water line while water was running through it, and admit air when the water line drained, all without leaks or breaks in the water’s flow. With an extensive presence in the municipal water industry, our products are also widely used by industrial, mining, chemical, energy and processing companies. Crispin Valves are installed throughout both hemispheres, and in almost every country around the world.