Black Oxidized Aluminum API Gravity Unloading Coupler

Black Oxidized Aluminum API Gravity Unloading Coupler (Lightweight Version for Fuel Tank Bottom Loading)

The HB8061 Series API Gravity Unloading Coupler is a high-performance fuel transfer accessory, designed for safe and rapid bottom loading of diesel, gasoline, and kerosene. Unlike traditional models, this series features black oxidized aluminum construction, providing superior surface durability and corrosion resistance. Its slightly redesigned body is more compact and lighter, making it particularly popular in European markets where weight optimization and quick installation are crucial.

The 70-degree inclined design ensures smooth hose connection, reducing wear and extending hose service life. Its inner lip interface allows effortless compatibility with various connectors following API 1004 standards, ensuring safe, fast, and reliable unloading operations.

Globally, this type of coupler is known under multiple names, including API Drop Adaptor, Gravity Unloading Coupler, Bottom Loading Quick Connector, Fuel Transfer Drop Adaptor, API Fuel Coupler, Diesel No-Drip Coupling, Liquid Unloading Quick Connector. Despite regional differences in terminology, its core value is consistent: efficiency, safety, durability, and versatility.

Key Features
Durable black oxidized aluminum body: Offers long-lasting corrosion resistance while maintaining a lightweight design.
Flexible sealing options: Equipped with replaceable O-rings or gaskets, catering to diverse operational requirements and fuel types.
Multiple size options: Male ends available in 2.5, 3, and 4 inches, with groove, NPT, or BSPT connections, and optional female ports, compatible with a wide range of API bottom adapters.
Reliable materials: Brass handle, stainless steel pin, and Viton or Buna-N seals ensure longevity and chemical compatibility.
Wide operating range: Working pressure 0–0.6 MPa, temperature -20°C to +70°C, suitable for diesel, gasoline, and kerosene.
Maintenance-friendly: Main gaskets and other spare parts are easily replaceable, reducing downtime and ensuring continuous, safe operation.

Typical Applications
HB8061 Series Gravity Unloading Couplers are widely applied for tank truck bottom loading, gas station fuel transfer, oil depot unloading, chemical liquid handling, and liquid pipeline rapid connection platforms.