1.1 These requirements cover primary, secondary, and coaxial types of flexible connector pipes intended
for short length transfer and containment of the specific liquid fuels (or vapors thereof) identified in this
Outline, at commercial (public) or fleet (private) automotive motor vehicle fueling stations.
1.2 Connector pipes may be metallic, nonmetallic, or composite, but are limited to maximum 12 ft (3.65
m) lengths in nominal sizes up to 4 inches (102 mm) as flexible transition components within fuel
dispensing and/or vapor recovery piping systems, typically intended for use in the following automotive
fueling station applications:
a) Underground use (below surface but accessible such as within chase piping) when
connected to underground tanks or underground pipes with expected exposures to soil, water,
and soil fluids;
b) Sump use (enclosed tank, transition or dispenser types) when connected to pumps, valves,
monitors, or dispensing devices with expected exposures to soil, water, soil fluids, and
occasional sunlight;
c) Aboveground use (above surface but with additional physical protection) when connected to
aboveground tanks or aboveground pipes with expected exposures to soil, water, soil fluids,
and sunlight.
1.3 Connector pipe systems are intended for containment of automotive fuels and exposure to soil fluids
that have similar chemical, physical and material compatibility properties as represented by the test liquids
in these requirements based on fuels formulated in accordance with 40 CFR Part 80, Regulation of Fuels
and Fuel Additives, and meeting the following ASTM Fuel Specifications and blend limitations:
a) ASTM D-975, Standard Specification for Diesel Fuel Oils, with biodiesel blends up to a
maximum of 5 percent (B5);
b) ASTM D-7467, Standard Specification for Low Blend Biodiesel, with biodiesel blends
between 6 to 20 percent (B6 to B20).
c) ASTM D-4814, Standard Specification for Automotive Spark-Ignition Engine Fuel, gasoline or
oxygenated gasoline, with limited ethanol blends up to a maximum of 10 percent (E10).
d) ASTM D-5798, Standard Specification for Fuel Ethanol (Ed75 – Ed85) for Automotive Spark-
Ignition Engines, high blend ethanol, with gasoline/ethanol mixtures in the nominal E85 range
(E70 – E90).
e) Mid Range Ethanol Blends (E11 to E69) using variable mixtures of ASTM D4814 Low Blend
Ethanol and ASTM D5798 High Blend Ethanol
1.4 Products covered by this outline are intended to be installed and used in accordance with:
a) Flammable and Combustible Liquids Code, NFPA 30,
b) Code for Motor Fuel Dispensing Facilities and Garages, NFPA 30A,
c) Uniform Fire Code, NFPA 1,
d) International Fire Code published by the International Fire Council, or
e) Other applicable federal and state regulations for piping.
1.5 These products are factory manufactured and intended for on-site field assembly, inspection, and
leak testing for the specified applications and use conditions by qualified persons in accordance with the
manufacturer’s instructions and local requirements.
1.6 These products are intended to be periodically inspected and maintained for continued service, or
taken out of service if necessary, by qualified persons in accordance with industry recommended practices
and/or the manufacturers instructions.
1.7 These products have not been evaluated for use after natural disasters, fires or exposures to
chemicals not representative of the test liquids or excessive physical damage beyond the expected
assembly, installation and uses as identified in these requirements.