Cap device of a gas cylinder valve

Abstract

A cap device of a gas cylinder valve is sheathed on an exhaust valve of a high-pressure gas cylinder and is primarily constituted by a cover and a base. The cover is formed with a holding space, a wall of the cover is formed with a corresponding perforation, and an inner side of the wall is defined with a locking part by which the cover can be locked with a fixing part of the base. On the other hand, pre-determined positions on the fixing part are provided with plural positioning members at corresponding positions. Therefore, after the cover has been locked and assembled with the base, the cap device can be installed on the high-pressure gas cylinder, thereby preventing the exhaust valve from being damaged by impact of a foreign object.

1 . A cap device of a gas cylinder valve, which is sheathed on a valve of a high-pressure gas cylinder, comprising:
 a cover, which is provided with a wall, with the wall being defined with a holding space, the wall being formed with a corresponding perforation and an inner side of the wall being defined with a locking part; and   a base which is formed with a connection part to connect with the holding space and is defined with a fixing part to be locked with the locking part, with pre-determined positions on the fixing part being provided with plural positioning members at corresponding positions.   
     
     
         2 . The cap device of a gas cylinder valve according to  claim 1 , wherein an inner surface of the base is formed with a screw-thread to be locked with the high-pressure gas cylinder. 
     
     
         3 . The cap device of a gas cylinder valve according to  claim 1 , wherein the cover and the base are further formed integrally.