Acetylene hoses used with oxyacetylene equipment are which color?

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Color coding is used on oxy-fuel hoses to prevent dangerous mix-ups. Acetylene, a fuel gas, uses red hoses, while the oxygen hose is green. This visual distinction helps ensure the correct hose is connected to the acetylene side and not to the oxygen side, reducing the risk of cross-connection and potential hazards. So, acetylene hoses are red.