| Attachment damaged or missing. Attached to the oxygen cylinder are a valve, a handwheel, a cap and a shockproof rubber ring. The bottle cap is to prevent the cylinder valve from being damaged by impact in the process of handling, or even being broken to make the gas spewing out at high speed, pushing the cylinder valve and handwheel forward high speed to cause casualties. Shockproof ring is a protective device to prevent the cylinder from being impacted. It is required to have a certain thickness and elasticity. |
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