John-Valve has its own investment Casting Foundry which produces high quality casting using the lost wax process, and is a certified foundry approved by ISO-9001, PED, and Lloyd's Register. We can supply our customers with high-quality castings and our highly efficient operation allows batch firing every 20 minutes leading to a fast, well-organized production line of high quality castings, and the monthly output of casting is about 40 tons including valve components and machinery parts.