Analysis of the advantages and disadvantages of asphalt pump under pressure oper

Asphalt pumps can mostly operate under low pressure in an unloaded state, which can extend their service life. But after hanging the load, the situation becomes complicated. By changing the degree of blockage at the exhaust port of the asphalt pump, the load of the pump can be altered. The larger the load, the higher the starting voltage required for the asphalt pump, up to the rated value; For very small loads, such as connecting only a slightly longer pipe to the exhaust port, there is no problem with starting and running under low pressure.