What material must the fittings or connectors on each end of the hose be made from?

The fittings or connectors on each end of the hose must be made from Type 316 stainless steel due to its superior corrosion resistance and durability, especially in environments where they might come into contact with corrosive substances. This material provides the necessary strength and reliability required for handling compressed natural gas (CNG), which can present challenges due to its chemical properties and high pressure. Type 316 stainless steel is particularly recommended in applications involving CNG because of its ability to withstand varying temperatures without deteriorating or losing integrity.

Type 304 stainless steel, while also corrosion-resistant, does not offer the same level of protection as Type 316 in harsh conditions, especially those involving chlorides. Aluminum, though lightweight and resistant to corrosion, may not provide the same structural integrity and durability as stainless steel when exposed to the pressures involved in CNG applications. Plastic is not suitable for the fittings or connectors used in high-pressure scenarios, as it lacks the strength necessary for safety and reliability. Thus, Type 316 stainless steel is the preferred material choice for these fittings and connectors.