Profile: Schrader Duncan Ltd. distributes automotive components, power transmission belts, hoses, wiper systems and lubricating systems. We are ISO 9002 certified. Dubltite convertible truck and bus valves are supplied in straight form but can be converted to single or double bent form by using our truck valve converting tool. We cater to printing & paper, tyre, cement, plastic & textile machinery, petrochemical & steel industry and other general engineering industries.