In addition, the measurement on pressure loss cross one side of four-way diverter valve has been carried out and some questions on pressure loss of four-way diverter valve are posed.
同时，也对四通换向阀进行了单侧压力损失测量，对四通换向阀说明书上的压力损失参数的准确性提出了质疑。
2
Check 3-way fuel oil selection valve located before fuel oil pump unit and change the 3-wayvalve to MDO/MGO side.
检查位于燃油输送泵前的三通燃油切换阀，并转换到MDO侧。
3
An integral electronic board, mounted to the side of the valve, may be utilized to control the 4-way directional valve and motor direction (when not using a rotary encoder control).