Pneumatic valve

Pneumatic valve for an inflatable object such as an inflatable boat, this valve being arranged so as to be partially embedded in an aperture in the flexible wall of the inflatable object carrying it and not protruding significantly in relation to this wall, the valve comprising a valve body containing the valve mechanism and two collars like truncated cones surrounding the valve body, being attached to same and suitable for gripping between them in a leak-proof manner the portion of the flexible wall peripherally bordering said aperture, wherein the two collars belong to two respective rings;

• wherein the valve body is externally threaded and the two rings are equipped with an internal thread in order to be able to be screwed, the one after the other, on to the valve body;
• and wherein sealing means, provided between the lower ring and the valve body, comprise a protruding shoulder surrounding in annular fashion the valve body at the base of its external thread, said shoulder being suitable for serving as a stop for the lower ring screwed on to the valve body, and a sealing ring surrounding the valve body against said shoulder in order to be gripped between the latter and the lower ring screwed down against the latter;
• whereby the valve body can present a transverse dimension approximately identical to that of said aperture of the flexible wall and fitting the valve on to or removing it from the flexible wall can be carried out entirely from the exterior of the flexible wall.