Pressure compensating device for airgun - has compensating chamber formed by sealed floating piston in main chamber

摘要

There is a compensating pneumatic chamber (8) connected with the main chamber under the action of a sealed piston (9) which slides inside the compensating chamber. The piston separates the chamber from the main one, and subjects it to variable pressure. The piston carries a peripheral retention joint (10) which allows easy passage of air from the main to the compensating chamber. Both chambers have stops to limit axial movement of the piston. The compressed air exhaust is in an intermediate zone.