Two design strategies that three-wayvalve control unsymmetrical cylinder and fourwayvalve control symmetrical cylinder were analyzed from principle and system structure aspects.
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。
3
To change this four-wayvalve will only take five minutes.