The principle and characteristics of the high temperature air generator is introduced. The PLC control project of periodical shift of the crossvalve is expounded.
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
The two halves shall be sealed by diamond shaped cross section rubber gasket permanently locked by a groove in the valve body.