Davis Valve offers a wide range of double door wafer checks in cast iron, cast steel, stainless steel as well and steel and stainless alloys in sizes ranging from 1 1/2″ to 36″ and pressure classes 125#, 150#, 300#, 600#, 900#, 1500#, and 2500#. Davis Valve Wafer Checks are easy to install and maintain, and provide smooth spring-assisted closing in an economical, lightweight and compact design.