The press takes use of advanced two-way cartridge valve system and imported electric pump technology which can realize double closed loop control of pressure and flow rate.
液压系统采用了先进的二通插装阀系统、进口高性能的电子泵技术，实现了主缸压力与流量的双闭环控制；
2
Twoway sealing, can choose a variety of forms of valve seat, sealing performance is good, high reliability.
双向密封，可选用多种形式阀座，密封性能好，可靠性高。
3
From fluid flow momentum theory the basic equation of flow dynamic forces in the spool closing process is derived, and the spool dynamic equation of the two-way cartridge valve is established.