Abstract: An improved high-pressure gas cylinder is provided, which includes a container and a plug. The container has an air passage which communicates an interior of the container with an exterior of the container. The plug includes a body and a sealing sheet, wherein the body is fixed in the air passage. The body has a hole which communicates with the interior of the container, and the sealing sheet covers the hole. The body and the sealing sheet are integral. Whereby, the plug is able to tightly seal the container to reduce the possibility of wasting gas; additionally, the manufacturing process would be less complicated and efficient with the simplified plug.

Abstract: An improved high-pressure gas cylinder is provided, which includes a container and a plug. The container has an air passage which communicates an interior of the container with an exterior of the container. The plug includes a body and a sealing sheet, wherein the body is fixed in the air passage. The body has a hole which communicates with the interior of the container, and the sealing sheet covers the hole. The body and the sealing sheet are integral. Whereby, the plug is able to tightly seal the container to reduce the possibility of wasting gas; additionally, the manufacturing process would be less complicated and efficient with the simplified plug.

Abstract: An improved high-pressure gas cylinder is provided, which includes a container and a plug. The container has an air passage which communicates an interior of the container with an exterior of the container. The plug includes a body and a sealing sheet, wherein the body is fixed in the air passage. The body has a hole which communicates with the interior of the container, and the sealing sheet covers the hole. The body and the sealing sheet are integral. Whereby, the plug is able to tightly seal the container to reduce the possibility of wasting gas; additionally, the manufacturing process would be less complicated and efficient with the simplified plug.

Abstract: A relief valve device comprising: a valve body and a valve mechanism. The valve body includes a axial channel, an air inlet end and an air outlet end. The air inlet end is defined as one end of the valve body. The air outlet end is defined as the other end of the valve body. A first washer is mounted in the air inlet end. A second washer is mounted in the air outlet end. The valve mechanism includes a washer, a poppet, a torsion spring, and a ring. The washer, the poppet, the torsion spring and the ring are mounted in the axial channel of the valve body in sequence. The ring is mounted to restrict the torsion spring, the poppet and the washer in the valve body. Thus, the present invention can effectively lower the cost and be easy to assemble and manufacture.

Abstract: A pneumatic valve device comprising an integral valve body having first, second, third, fourth, fifth, sixth and seventh openings; a regulation assembly for supplying gas in the second opening; a relief valve in the seventh opening; a pressure gauge in the sixth opening; and an inlet connector in the fifth opening. The first opening communicates with the second opening and the third opening respectively, the first opening has external threads releasably connected to a compressed gas cylinder, the third opening has one end communicating with an outside surface of the valve body and the other end communicating the regulation assembly, the fourth opening interconnects the compressed gas cylinder and the inlet connector, and the fifth opening, the sixth opening, and the seventh opening are equally spaced apart around an outer surface of the valve body and have the same elevation. The first, third and second openings communicate with each other.

Abstract: A fluid regulating device includes a valve housing formed with a piston receiving chamber that has a piston member slidingly and sealingly disposed therein to divide the piston receiving chamber into a volume-variable gas compartment filled with pressurized gas and a volume-variable fluid compartment. A regulator receiving chamber has a large-diameter rod receiving section, and a small-diameter fluid channel with a rate control section that is aligned with and that extends from the rod receiving section. The fluid channel interconects fluidly the rod receiving section and the fluid compartment.