[Slow exhaust control is possible]
Compared with general ON / OFF vacuum valves and two-stage exhaust vacuum valves, it enables gradual exhaust at a constant rate.

[Pressure control function added]
A pressure control function has been added to the highly reliable vacuum valve.
Regulator and variable leak are not required for pressure adjustment in vacuum.
The poppet valve system enables fully closed operation, a problem for butterfly valves, through the O-ring sealing structure.

[Easy maintenance]
The valves and wiring components can be maintained separately.