Standard for Flexible Connector Piping for Fuels

1.1 This Standard sets forth the minimum requirements for 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 standard, at commercial (public) or fleet (private) automotive motor vehicle fueling stations or similar fuel dispensing applications, and piping systems for fuel supply of generators, burners or similar equipment.

 
1.2 Flexible 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 in (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.