This modular stack valve is designed to help stop oil movement from the control valve or actuator. Typically used with proportional valves with zero-overlap spool configurations to allow oil movement while the system is closed.

The flow is blocked when the power is off, and two-way flow is allowed when the power is on

The rated pressure is 5,000 PSI and the flow rate is 30 GPM

NFPA D03 and D05 Installation mode