Loading and unloading arm (with nitrogen protection device)

The loading and unloading arm, as a metal universal loading and unloading pipeline equipment, is connected to the hard pipeline of the transport vehicle. It has the characteristics of novel structure, easy docking, flexible operation, and long service life. The full metal hard pipe structure connection of the loading and unloading arm has been achieved, which solves the safety problem of possible explosion caused by the use of hose pressure during unloading and pressurization, and ensures the personal safety of operators. According to the structural characteristics, there are two forms of loading and unloading arms: those with nitrogen protection devices and those without nitrogen protection devices:

Loading and unloading arm with nitrogen protection device: The loading and unloading arm is composed of liquid phase arm, gas phase arm, booster arm, and nitrogen protection blowing system. Use dry high-pressure nitrogen to protect the valve from contact with air, avoiding the phenomenon of the steering valve freezing and unable to rotate. The nitrogen purging system can ensure that no air is mixed into the pipeline.

The product is made of stainless steel 316L material and manufactured using a special low-temperature welding process. The key component rotating joint is designed using aerospace technology, completely avoiding the occurrence of leakage caused by welding deformation and sealing surface damage, achieving zero leakage.

Applicable media: liquefied natural gas, liquid oxygen, liquid ammonia, liquid nitrogen, liquid chlorine, epoxy propane, etc.

Nominal diameter: DN32-DN100 Design temperature: -196 ℃~-250 ℃

Design pressure: 0.06MPa-6MPa Pipeline material: 304, 304L, 316L