Ridhiman Alloys Is Authorised Dealers Of Ball valves, Check valves, Gate Valves, Control Valves in New Delhi. Ridhiman Alloys is New Delhiās most trusted valves Dealers in New Delhi. Our manufactured Valves contain prime quality materials. factory-made from quality grades meeting ASTM and/or AISI standards as a result of higher the standard, higher is that the toughness of the Valves.