. Walter Miller Co. has been a manufacturer of American made brass, bronze and copper castings for over a hundred years in varying weights, sizes, and geometries that use a large range of alloys. We help our clients convert their leaded castings to castings that contain no lead. Industries served include fire protection, pumps and pressure equipment, valve manufacturing, artistic, decorative and electrical components. We only produce quality castings and are a registered ISO 9001:2008 Certified Quality System ensuring complete consistency. We offer competitive pricing, low lead times, delivery on time as superior customer service.