What type of markings must be present on hoses and metallic hoses?

The requirement for hoses and metallic hoses to have markings, such as the manufacturer's name and design pressure, is essential for ensuring safe operation and compliance with industry standards. These markings serve multiple purposes.

Firstly, the manufacturer's name identifies the source of the hose, allowing for quality control and assurance regarding the materials and construction of the product. This is vital because hoses must meet specific safety and performance standards to prevent failures that could lead to hazardous situations during operation.

Secondly, the design pressure marking indicates the maximum pressure the hose can safely handle. This information is critical for operators to prevent over-pressurization, which can result in blowouts or ruptures, posing risks to both the driver and the environment.

In summary, having clear markings of the manufacturer’s name and design pressure on hoses and metallic hoses ensures that operators can make informed decisions regarding the safe usage of these components, contributing to overall safety in CNG delivery operations. Other options, while they may include relevant information, do not encompass the essential safety and regulatory aspects that these specific markings provide.