Coupling for hydraulic high pressure pipes used in mining sector, has two parallel sealing walls attached to outer casing of plug nipple and to inner casing of connecting sleeve

摘要

The coupling has two parallel sealing walls attached to an outer casing of a plug nipple (1) and to an inner casing of a connecting sleeve (2). A sealing chamber (5) is connected with an idle chamber against the slide-in direction. The idle chamber is formed as recess with extended radial width in the outer casing of the plug nipple and is axially limited in slide-in direction through a slide ramp. A sealing element (3) is axially moved between the idle chamber and the sealing chamber.