Structure: This type of product can be subdivided into three categories: air operated, manual operated, and gas phase recovery. Features: 1. Adopt rotary contraposition, have nothing to do with locations of tank car mouth, nimble contraposition 2. Undersurface loading depth can reach to the bottom of tank car, thus reduce electrostatic potential and stack loss. 3. The use of seal cover reduces air pollution; vapor recovery loading arm can recover fugitive gas so as to mitigate energy consumption as well as air pollution. 4. Equipped with liquid level alarm; can control the liquid level inside the tank car by working in coordination with inlet ball valve. 5. Pneumatic control can be easily and reliably handled; actuated by worm wheel, worm; can lock down on its own; solid location, precise contraposition. Technical parameter 1,liquid phase diameter DN50~DN100 2,gas phase diameter DN25~DN100 3,Nominal pressure 1.6MPa 4,Applicable medium clean cargo, chemical liquids 5,Media temperature -40癈~+80癈 6,Seal materials polyurethane rubber, fluoro rubber, silicon rubber 7,Seal materials polyurethane rubber, fluoro rubber, silicon rubber 8,Extension stroke of vertical tube 3600mm(train loading arm) 2100mm((auto loading arm) Supply in full sets: 1. body of loading arm 2.air operated loading arm control box 3. seal cover 4.liquid level alarm;5.gas phase recovery metallic hoses;6.riser; 7. pneumatic Ball valve assistant with manual Others The loading arm are configured in a wide range of diameters and lengths to meet the specific requirements of your loading installation