Gas shut-off device
AssigneeLuxembourg Patent Company S.A.
InventorPaul Muzzo
Life of this patent
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Abstract
The invention is directed to a valve for a compressed gas cylinder, comprising: a valve body with an inlet, an outlet and a passage connecting the inlet with the outlet; a shut-off device of the passage with an actuating pin extending in the passage; a check-valve between the shut-off device and the inlet, the check valve comprising a seat and a movable closing member initially held at a position distant from the seat by contact with a guiding surface and movable past the position by the pin so as to cooperate with the seat and prevent a refilling flow of gas from the outlet to the inlet. The guiding surface is on a tubular portion fixed to the valve body and comprising at least one radial aperture so as to allow the refilling flow of gas to by-pass the closing member when in the distant position.
Claims20
A valve for a compressed gas cylinder, said valve comprising:
- a valve body with an inlet, an outlet and a passage connecting the inlet with the outlet;
- and
- a shut-off device of the passage including an actuating pin extending in the passage, a movable shut-off closing member, a shut-off seat in the passage and a spring urging the closing member towards the shut-off seat in a direction of service gas flow from the inlet to the outlet, wherein the pin is screwed to the movable shut-off closing member.
Dependencies are inferred from the claim text.