| 摘要 |
<p>The proposed valve provides an annular external gasket which, when not mounted, has a diameter of the internal through hole partially lower than the diameter of the cylindrical portion of the valve body housing in which it will be inserted, and partially larger than the latter at the coupling area with the rim, while said gasket externally has at one end an extended lip directed towards the rim, then an intermediate zone having a larger diameter than that of the hole in said rim and close to the limit of this intermediate zone an annular groove of reduced diameter, while on the valve body a hollowed impression is provided at the zone where the rim will be positioned. A mechanism is also provided as comprising a pin, a spring and an internal gasket, at one end thereof, said pin being provided with a support for the spring and at the other end with a cavity for receiving said internal sealing gasket for the valve and a narrowing being provided in the hole of said valve body to perform the function of both second support for the spring and valve closure seat cooperating with the internal sealing gasket mounted on said pin.</p> |
