scope:

This standard encompasses the design and performance requirements for flexible hoses with threaded end fittings used to carry flammable gases and / or ignitable liquids, such as, but not limited to, propane and natural gas, which may be used in appliances or machinery.

Flexible hoses used to carry flammable gases and / or ignitable liquids are used in many residential and commercial applications. Some commercial markets are laundromats, restaurants and food service, retail, and healthcare. Flexible hoses may be connected to stoves, ovens, furnaces, boilers, gas-fired fireplaces, etc.

Flexible hoses for flammable gases and / or ignitable liquids are made with corrugated stainless steel tubing with an optional non-metallic covering. The stainless steel is austenitic stainless steel alloy of the 300 series. Threaded end fittings are applied for connection to an ignitable liquid or gas source and appliance or machinery.

The intent of the design and performance requirements is for the flexible hoses to withstand stresses imposed by shifting or tipping appliances and machinery and/or by damage to structural framing caused by earthquakes, without fracture or leakage.

This standard is not applicable to hoses intended for direct burial underground.

This standard is not applicable to hoses intended for use with propane in its liquid state.

Other applications shall be evaluated on a case-by-case basis. In cases where International System (SI) sized flexible hoses for flammable gases and / or ignitable liquids are to be examined for Approval, test criteria comparable to the equivalent or nearest United States (U.S.) customary units shall be used.

Approval Standards are intended to verify that the product described will meet stated conditions of performance, safety, and quality useful to the ends of property conservation.

Purpose

This standard states Approval requirements for flexible hoses used to carry flammable gases and / or ignitable liquids. Flexible hoses used to carry flammable gases and / or ignitable liquids may be used with, but not limited to, appliances or machinery.

Approval criteria may include, but are not limited to, performance requirements, marking requirements, examination of manufacturing facility(ies), audit of quality assurance procedures, and a follow-up program.