Tank truck delivery elbows are commonly used to connect hoses to above-ground storage tanks, but they can also be used to connect hoses to underground storage tanks. However, connecting a hose to an underground tank requires additional equipment and safety precautions.
When connecting a hose to an underground storage tank, it is important to use a specially designed underground tank truck delivery elbow that is equipped with a vapor recovery system. This system helps to prevent the release of harmful vapors into the atmosphere during the transfer of product.
In addition to the delivery elbow, a special adapter is required to connect the elbow to the underground tank's fill pipe. The adapter should be designed to fit securely over the fill pipe and provide a tight seal to prevent leaks or spills.
Before connecting the hose to the underground tank, it is important to verify that the tank is properly grounded and that all electrical equipment in the area is in good working condition. This helps to prevent the buildup of static electricity that can ignite flammable materials.
During the transfer of product, it is important to monitor the pressure and flow rate to ensure that the transfer is proceeding smoothly. If any problems arise, such as leaks or spills, the transfer should be stopped immediately and the problem should be addressed before continuing.
After the transfer is complete, it is important to properly disconnect the hose and delivery elbow and to clean any spilled product or residue from the area. Proper maintenance and inspection of the delivery elbow and associated equipment is also important to ensure their continued safe and effective operation.
Drop Elbows w/ 4 in. Male Adapter/ Female Coupler
Underground tank delivery elbows are specially designed for use in connecting hoses to underground storage tanks. These elbows have several features that help to ensure safe and efficient transfer of liquid products, while also minimizing the risk of leaks, spills, and environmental damage.
Some common features of underground tank delivery elbows include:
Vapor recovery system: Underground tank delivery elbows are equipped with a vapor recovery system that helps to prevent the release of harmful vapors into the atmosphere during the transfer of product. The vapor recovery system captures any vapors that are produced during the transfer and returns them to the tank for safe disposal.
Breakaway couplings: Many underground tank delivery elbows are equipped with breakaway couplings that are designed to separate the hose from the elbow in the event of an accidental pull-away or other unexpected event. This helps to prevent spills and minimize the risk of injury.
Grounding wires: Like tank truck delivery elbows, underground tank delivery elbows may also be equipped with grounding wires that help to dissipate static electricity that can build up during the transfer of product. This helps to prevent sparks that can ignite flammable materials.
Locking mechanisms: Underground tank delivery elbows may also have locking mechanisms that help to secure the elbow in place during the transfer of product. This helps to prevent accidental disconnection or movement of the elbow.
Corrosion-resistant construction: Underground tank delivery elbows are typically made of materials that are resistant to corrosion and wear, such as stainless steel or aluminum. This helps to ensure that the elbow will last for a long time, even in harsh underground environments.
Compatibility with various hose sizes: Underground tank delivery elbows are typically designed to be compatible with a wide range of hose sizes, making them versatile and easy to use with a variety of different tanks and delivery systems.
