Feeding and/or sealing device for liquids and gases

摘要

The feeding and/or sealing device consists of a twin-walled working cylinder and at least two coaxial working chambers, divided by bridges and a piston into several chambers. The tube bridges are of spiral cross-section, and run from the external wall to the internal or to the working cylinder. The tube contains channels having bores by which cover and bottom parts can be fitted to the two ends of the working cylinder. The cap has an edging strip. After pressing, the working spaces are calibrated. This is followed by a heat treatment to influence the fit of the twin-band cylinder. Finally, the working space is sealed by a mechanical fitting process.