Cylinder valve assembly with check valve

摘要

An accommodation portion (53) is formed at a position where it faces a check valve member (42) through a chamber inlet (41a) of a check valve chamber (41). An opening means (51) is attached in the accommodation portion (53). This opening means (51) switches over between a valve opening position (Y) and a valve-opening cancellation position (X). A lock means (55) is attached between a peripheral wall of the accommodation portion (53) and the opening means (51). The lock means (55) changes over between a lock position (L) where it limits an advancement of the opening means (51) from the valve-opening cancellation position (X) and a lock cancellation position (M) where it allows the advancement. A valve-opening actuation means (60) is provided with a lock cancellation means (61). A magnetic force is made to occur between the lock cancellation means (61) and the lock means (55). The magnetic force changes over the lock means (55) to the lock cancellation position (M).