Hoses conveying propane liquid and/or vapor at pressures greater than 5 psig must be marked with what?

Hoses that are used to convey propane in either liquid or vapor form at pressures exceeding 5 psig must be clearly marked with both "LP Gas" or "LPG" as well as the working pressure. This marking is crucial for safety and operational integrity. By clearly indicating the contents of the hose and the maximum pressure it can safely handle, users can ensure that the hose is appropriately matched to the intended application, helping to prevent leaks, ruptures, or hazardous conditions. Proper labeling also aids in compliance with regulations and safety standards, ensuring that all personnel involved in handling propane can quickly ascertain the capabilities and limitations of the equipment they are using.