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Long Range Top Loading Arm Unsupported Boom | Top Loading Arms | Model 2239-UB

Long Range Top Loading Arm Unsupported Boom

The long range top loading arm unsupported boom is commonly used in applications where there is no existing steel work for support. There will be an increased load, therefore a heavy-duty base swivel joint is incorporated to provide support. The horizontal boom provides a wide range of operation which allows for multiple compartments to be filled without having to reposition vehicles used in loading arm filling processes. Similar in its design to the model 621 – LR/B, this arm has four swivel joints to allow for easy manoeuvrability.

Furthermore, this top loading arm includes a compression cylinder for ease of movement and a loading valve for either a hold-open or stay-open operation, extension/remote control for outboard loading valve operation. It is also fitted with a vacuum breaker to allow for a faster drainage. This arm can be manufactured in right or left hand configuration.

For more designs, please head to our loading arm page where you can find a range of Loading and Unloading Arms.

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Available Sizes:

3″ / 4″ / 6″


Aluminium / Carbon Steel / Stainless Steel

Operating Pressure:

Up to 15 Bar G

Seal Material:

Nitrile / Special Viton®


-15°C / +65°C


Flute beak end
Micro switch to signal when valve opened or closed
NDT tests (X-ray)
Stand post and support units
Locking Device
Overfill Level Sensor

Alternative designs and specifications for the Model 2239-UB are available on request

Enquiry details


Oil & Gas, Chemical, Petrochemical, Other


Top Loading Arm


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API Coupler Locking Device, API Coupler Proximity Switch, Colour Coded Hose and Pipe Covers, Drip Buckets, Hose Assemblies, Loading Arm Support Units, Lock Down Device, Pneumatic Control System, Sight Glass, Spring Cylinder, Telescopic Drop Tube