Aluminum Gravity Drop Top-Seal Delivery Elbow for Gas Station Fuel Unloading

Aluminum Gravity Drop Top-Seal Delivery Elbow for Gas Station Fuel Unloading

The HBSYWG-100 Series Gravity Drop Top-Seal Delivery Elbows are essential connectors used in modern gas stations for unloading fuel from tank trucks into underground storage tanks. Each elbow features a roller-cam female fitting at the bottom, allowing secure attachment to the brass male fitting inside spill containers. Its quick-connect design ensures easy assembly and disassembly, reducing labor and improving unloading efficiency.

Constructed from cast aluminum, these elbows include Buna-N and cork rubber gaskets, capable of operating safely in temperatures ranging from -20°C to +50°C, with a maximum working pressure of 0.6 Mpa. The net weight is approximately 7.8 kg. The three-piece modular structure allows the male connector to be replaced if worn, extending service life and reducing maintenance costs.

The HBSYWG-100 series supports multiple connection types, allowing users to select according to operational needs. For example, the HBSYWG-100 connects a 4-inch roller-cam female to a 4-inch Cam-lock coupling. Other sizes include HBSYWG-80 and HBSYWG-65 for 3-inch and 2.5-inch Cam-lock couplings, respectively. NPT/BSPT male thread versions (HBSYWG-100T/80T/65T) are also available.

Worldwide, this product is known by different names. In North America and Europe, it is often called a “Gravity Drop Elbow”, “Top-Seal Delivery Elbow”, or “Fuel Dispenser Elbow”. In the Middle East, it is referred to as a “Fuel Tank Drop Elbow” or “Unloading Elbow Connector”. In parts of Asia, common names include “Gas Station Top-Seal Fuel Elbow” or “Quick-Connect Fuel Delivery Elbow”. Regardless of terminology, its core function is to ensure safe, rapid, and reliable fuel transfer from tank trucks to underground tanks.

The roller-cam design reduces wear and provides smooth coupling. Combined with the integrated Cam-lock or NPT/BSPT male thread inlet adapter, it allows stable fuel flow, ease of operation, and reliable top-seal system performance. Whether for new construction or station upgrades, this product offers a safe, efficient, and environmentally-friendly solution.

Choosing the HBSYWG-100 Aluminum Gravity Drop Top-Seal Delivery Elbow enables gas stations to optimize fuel unloading, minimize spill risks, extend equipment life, and accommodate global standards and installation requirements, making it an indispensable component in modern fueling systems.