Pneumatic fenders and vents for pneumatic fenders

摘要

A pneumatic fender and a mouth piece metal for a pneumatic fender with significantly enhanced maintainability wherein a safety valve can be attached and detached and a confirmation test of the valve opening pressure of the safety valve can be performed on the pneumatic fender while in use, and the labor and time required for these operations are greatly reduced. An open/close valve (9) is fixed at a position in which a through hole (7a), formed in a dividing wall (7) constituting a receiving chamber (8), is closed by closed position fixing members (5a), a safety valve (6) is isolated from a cavity (2a) of a fender bladder (2) by a receiving chamber (8), the safety valve (6) being able to be detached and attached while the pneumatic fender (1) is in use; a confirmation test of a valve opening pressure of the safety valve (6) is performed by opening a receiving chamber open/close valve (12a) and raising an internal pressure of a cavity (8a) of the receiving chamber (8) to a pressure threshold (Pm) via a receiving chamber communication passage (12), and the open/close valve (9) is fixed at a position in which the through hole (7a) is open by open position fixing member (5b), thus allowing the safety valve (6) to function as normal.