Why is the pressure relief valve on household liquefied gas cylinders installed in the reverse direction?
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Why is the pressure relief valve on household liquefied gas cylinders installed in the reverse direction? What were the considerations?
Reply 1# wsm1988 **It’s mandatory, as some people use liquefied gas instead of acetylene. Upon close inspection, it can be seen that the connector of the oxygen cylinder used for welding is turned clockwise, while the connector of the acetylene cylinder is turned counter-clockwise. The purpose of this is to prevent the acetylene hose from being used interchangeably with the oxygen hose. If they are all clockwise, a certain amount of oxygen or acetylene will remain in the hose after each operation. If it is used in the reverse direction next time, a mixture of oxygen and acetylene will form inside the rubber tube. It will explode upon contact with an open flame.
I learned it now; so that’s how it is. You really don’t know unless you’re told