Acorn Engineering has been manufacturing valves for plumbing fixtures for over 40 years. This core product line includes valves ideal for a variety of different applications in commercial and institutional markets. Acorn Controls valves offer options for use with single fixtures, multiple fixtures or whole building water systems.. Challenger Valves, an Australian owned and operated company since 1984, is a leading manufacturer, supplier and distributor of valves and actuation. It provides products and solutions to the water, mining, power generation, irrigation and general industries. In stock is a wide range of products including Butterfly, Gate, Knife Gate, Ball and. "/>Mixing valve revit family