| 摘要 |
A gas pressure regulator includes a throttle valve provided between a gas inlet passage and a pressure sensing chamber pertaining to a gas exit passage, the throttle valve having a sealing plug comprised of a needle and a base float fluidically drafted for closing a truncated cone hole of the throttle valve when subject to a surge gas flow of great volume rate due to a gas leakage from a downstream gas line for safety reason, and upon a simple restoring of the plug for re-opening the throttle valve, a gas stream can be continuously supplied when just opening a valve of a gas source.
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