What type of fittings must be used for forging in a CNG system?

In a CNG system, the use of fittings that are forged steel and stamped for a pressure rating of 6000 PSI or greater is crucial for ensuring safety and integrity under high-pressure conditions. CNG systems operate at significantly high pressures, and the structural strength of the fittings is essential to prevent failures that can lead to leaks or catastrophic events.

Forged steel fittings provide superior strength and durability compared to other materials, such as plastic, brass, or aluminum, which may not withstand the high-pressure environments typical of compressed natural gas applications. The specific requirement for fittings to be stamped 6000 PSI or greater confirms that they have undergone rigorous testing to ensure they can handle the stress and demands of a CNG system safely.

The other fitting materials, while they might be suitable for different applications, do not meet the necessary strength and safety standards required for CNG systems. Their use could pose significant risks, making it essential to adhere to the specified standards for forged steel fittings in these high-pressure applications.