Gasoline and Diesel Bottom Loading Arm
The Gasoline and Diesel Bottom Loading Arm is a bottom-loading, closed-loop transfer system specifically designed for light petroleum products such as gasoline and diesel. Its core advantages lie in zero fugitive emissions, enhanced safety, and high efficiency; it is widely utilized in tank truck loading operations at oil depots, gas stations, and petrochemical facilities.
Installed at ground level or on a loading platform, the system connects to the bottom interface of a tank truck via a dry-break valve or API coupler, enabling the closed-loop transfer of both liquid and vapor phases-thereby replacing traditional open-hatch top-loading methods.
Main Structure: Inner arm, outer arm, swivel joints (4–5 units, featuring PTFE primary seals), balancing mechanism (spring- or hydraulic-assisted), and support column.
Key Terminal Components:Dry-break valve (for liquid phase; self-closing and drip-free), breakaway coupling (for emergency disconnection), and vapor recovery coupler (for capturing oil vapors).
Materials:Piping is predominantly carbon steel; swivel joint inner rings are constructed from 304 stainless steel; and primary seals utilize PTFE or FKM materials, selected to suit the specific physicochemical properties of the handled petroleum products.
Key Parameters
Nominal Diameter:Typically DN100 for both liquid and vapor lines, accommodating flow rates of 20–50 m³/h; larger diameters (DN125–150) are available as an option for high-flow applications.
Pressure:Operating pressure ranges from 0.6 to 2.5 MPa; design pressure is typically ≥ 2.5 MPa.
Temperature:Ambient temperature up to 80°C.
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