Patent ID: 6105632
Filing Date: 2000-08-22
Classification: A62B,B63C,G05D

Abstract:
A combined pressure reduction and bottle-filling valve for use with gas bottles containing highly pressurized breathing gas, the valve including a valve chamber and a spring-loaded valve slide movable in said valve chamber and which, when gas is taken from a bottle and delivered to a part of said valve chamber, reduces the pressure with the aid of the spring, so as to maintain the pressure in said valve chamber part substantially constant at a level determined by the force exerted by the spring, and an outer multi-purpose valve connector which, when gas is being consumed connects the valve chamber to external equipment and when filling the bottle with highly pressurized gas delivers gas to the bottle via the same passageway as that through which gas is delivered to the valve chamber as gas is consumed, wherein the spring actuates the valve slide so as to hold open the passageway extending from the bottle to said valve chamber part until the pressure in said valve chamber part reaches the level determined by the spring, and wherein a check valve maintains the passageway normally in a closed state under the influence of the pressure in the bottle and the valve slide is adapted to open said check valve under the influence of the spring when the pressure in said valve chamber part lies below the set spring pressure.