摘要 |
<p>A quick coupling device for fluid tight, especially temporary connection to a threaded pipe nipple (2) or the like, e.g. for use in tightness tests or leak detection. The device comprises two portions which are axially movable relative to each other, namely a cylindrical casing (3) and a piston (4) displaceably mounted therein. The casing (3) or the piston (4) are adapted (5) for permanent connection to a pressurized fluid conduit, and the piston (4) has a through opening (9) permitting the flow of pressurized fluid to the pipe nipple (2). According to the invention, one (e.g. the piston 4) of the axially movable portions is provided with a thread dimensioned to be screwed into engagement with the thread of the pipe nipple (2), whereas the other portion (e.g. the casing 3), at its axial end surface, has a ring gasket (8) dimensioned to seal against the axial end surface of the pipe nipple (2) after portion (4) has been screwed into the pipe nipple (2) and the other portion (3) has been displaced axially against the pipe nipple (2).</p> |