| 摘要 |
A special engineering plastic valve for extinguishing fire is provided to firmly seal gas of an inner portion of a fire extinguisher. The special engineering valve is made of injection-molded plastic materials. The special engineering plastic valve is formed in such a way that a female threaded portion is formed on the special engineering valve and a male threaded portion is formed on a mouth portion of a cylinder. All screw portions installed on a portion for discharging gas and fire extinguishing solution, attached to a gauge, installed on a path passing through the fire extinguishing solution and nitrogen gas from an inner portion of the cylinder, and attached to a grip of a fire extinguisher are injection-molded plastics.
|
