PRESSURE-RESISTANT VESSEL

摘要

A pressure-resistant vessel (1) in which the peripheral part (3a) of the opening (3d) in an inner shell (3) wraps the end surface of a mouth ring (4) on the inner side of the vessel. The pressure-resistant vessel (1) comprises a cylindrical pressing member (5) screwed into the inner peripheral surface (4b) of the mouth ring (4), a first seal (an O-ring (10) and a liquid sealant (11a)) peripherally contacting with the inner peripheral surface (b) (shown in Fig. 3) of the mouth ring (4) exposed between the inner shell (3) and the pressing member (5), the inner shell, and the pressing member, a valve (6) having a screw part (6b) screwed into the inner periphery (4c) of the mouth ring at a position on the vessel outer than the pressing member and an inner end part (6c) inserted into the hole part of the pressing member, and a second seal (an O-ring (12)) for sealing between the outer peripheral surface of the inner end part (6c) and the inner peripheral surface of the pressing member. The pressure-resistant vessel further includes a third seal (an O-ring (13)).