UL-330B:2015 pdf free download – STANDARD FOR SAFETY Hose and Hose Assemblies for Use With Dispensing Devices Dispensing Diesel Fuel, Biodiesel Fuel, Diesel/Biodiesel Blends With Nominal Biodiesel Concentrations Up To 20 Percent (B20), Kerosene, and Fuel Oil.
6 Internal Diameter
6.1 The internal diameter of a hose shall be equal to the nominal diameter ±1/32 inch (0.8 mm for sizes up to and including 3/4 inch (19.0 mm) and ±1/16 inch (1.6 mm) for larger sizes.
6.2 A tapered plug gauge of wood or metal having a taper of 3/8 inch per foot (31.3 mm/rn), marked to indicate variations of 1/64 inch (0.4 mm) in diameter, or a set of wood or metal plug gauges, straight or ball type, in increments no greater than 0.01 inches (0.25 mm) for hoses in sizes 1 inch (25.4 mm) and less and 0.02 inches (0.51 mm) for hoses in sizes greater than 1 inch (25.4 mm), shall be used for measuring the internal diameter. An expanding ball gauge, and a micrometer or other equivalent means to accurately measure the expanded ball, are required in some cases.
6.3 The end of the hose is to be cut square. When a tapered plug gauge is used, the plug gauge is to be inserted in the hose sample until a close fit is obtained without forcing. The diameter of the gauge at the end of the sample, to the nearest 1/64 inch (0.4 mm), is to be recorded as the internal diameter of the hose. When a set of straight or ball-type plug gauges is used, the diameter of the gauge, which when inserted in the hose sample gives a close fit without forcing, is to be recorded as the internal diameter of the hose. When the end of a wire-braided hose is constricted or flared, the inside diameter is to be measured 1 inch (25.4 mm) from the end to be representative of the inside diameter by means of an expanding ball gauge.
7 Reinforcement
7.1 Reinforcement, if present, shall be evenly and firmly applied over the tube of hose conveying liquid fuel.
8 Electrical Bonding
8.1 Hose and hose assemblies shall be constructed so as to provide an electrically conductive and bonding path between the couplings at each end of the length in order to dissipate static electricity.
9 Couplings
9.1 Couplings provided on hose assemblies shall be made from metals and shall be constructed with a section for tightening with tools. See Materials, Section 10.
9.2 The coupling provided on single-line hose assemblies shall have male pipe threads complying with the Standard for Pipe Threads, General Purpose (Inch), ASME Bi .20.1.
10 Materials
10.1 Metallic materials
10.1.1 General
10.1.1.1 A metallic part in contact with the fuels anticipated by these requirements shall be resistant to the action of the fuel if degradation of the material will result in leakage of the fuel or if it will impair the function of the device. See the Long Term Exposure Test, Section, 27.
10.1.1.2 The exposed surfaces of metallic parts shall be resistant to atmospheric corrosion if this corrosion will lead to leakage of the fluid or if it will impair the function of the device. The material shall comply with the requirements in Atmospheric corrosion, 10.1 .2.