Duncan Engineering Limited manufactures, assembles, and trades in fluid power and automation products in India and internationally. The company's products portfolio includes fluid power and automation products, such as air and hydraulic cylinders, pneumatic valves and accessories, positioners, air preparation units, and tubing and fitting products; valve automation systems, including rotary actuators, limit switch boxes, solenoid valves, coils, exhaust valves, speed controllers, and ball and butterfly valves; and control cards, valve stands, enclosed panels, and positioner cylinders. It also offers off-highway tire valves and tire accessories that include valve accessories, high pressure valves and inflating connections, bore valve extensions, tubeless non swivel valves, tubeless single bend swivel valves, and garage and in-plant service equipment, as well as tubeless tire valves and tire repair products. The company's products are used in metals, steel, energy and environment, cement, printing and packaging, pharmaceutical, machine tools, material handling, process, construction machinery, and other general engineering industries. It distributes its products through a network of sales offices, and channel partners and distributors. The company was formerly known as Schrader Duncan Limited and changed its name to Duncan Engineering Limited in December 2016. The company was incorporated in 1961 and is headquartered in Pune, India. Duncan Engineering Limited is a subsidiary of Oriental Carbon & Chemicals Limited.