This schematic depicts all components used in the Ds100 1981 (x) Usa (e03) Fuel Cock (ds100c partslist.
The Ds100 1981 (x) Usa (e03) Fuel Cock (ds100c consists of nine pieces with the Cock Assembly,fuel being the most expensive.
The most reasonably priced component used on the Ds100 1981 (x) Usa (e03) Fuel Cock (ds100c is the Bolt L:16.