| 摘要 |
A fluid pressure shock absorbing valve is mounted between an oxygen supply tank and a fluid pressure regulator in a supply system such as that for welding torches. The valve includes a housing slidably supporting a valve member having a head biased to seat in the direction of flow from the tank to the regulator to normally close the valve. The valve member has a central flow passageway extending thereinto from the downstream end, and a restricted passageway extends through the head and opens into the flow passageway to bleed fluid through the head when the latter engages the seat. Radially extending passageways open into the flow passageway downstream from the seat. When the supply tank is opened, flow through the restricted passageway allows for gradual pressurization of the regulator and an eventual build-up of pressure to displace the valve member from the seat to allow full flow past the seat and into the flow passageway through the radial passages.
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