... kg and the gross mass is 23700 kg. The working pressure is 0.09Mpa and the working temperature is 250. ... asphalt. It is equipped with asphalt return tube, anti-puffing pressure vent valve, anti-aging overhead nitrogen valve, thermometer, volumeter and ... asphalt. It is equipped with asphalt return tube, anti-puffing pressure vent valve, anti-aging overhead nitrogen valve, thermometer, volumeter and ...