The high rated flow proportional cartridge valve, which is capable of switching between the two of presetting openings rapidly, was developed to realize the cushioning function in the die-casting machine and companion machinery for safe operation and extending the service life.
The high flow proportional throttle cartridge valve was developed for the high-speed hydraulic press machine
Key Technology and Achievements：
A new pilot control scheme which adopts both speeds on-off valve and pressure relief valve is put forward so that the proportional cartridge valve is capable of switching between the two of presetting openings rapidly
A new scheme of parallel coils is put forward to replacing the original single-coil, the delay time of the switching operation of high speed on/off valve is reduced from 3ms to 0.8ms