A Pair of Early 20th Century Automotive Pressurised System Caps

A pair of heavy-duty cast non-ferrous metal caps, characteristic of components used in early automotive pressurised fuel systems or heavy-duty tyre inflation setups. One cap is configured as a valve adapter, fitted with a central Schrader-style threaded valve stem, while the second component is a solid blanking or sealing cap. Both caps feature two prominent external lugs to provide grip for manual tightening. The interiors of both caps are threaded for attachment. These items are typical of the Brass and early Vintage eras of motoring. No maker’s marks, logos, or patent numbers are visible on either item.

Diameter: Approximately 4cm to 5cm.