Danfoss / Eaton-39 Variable Pump CW

Closed circuit is a specific hydraulic configuration, not just a label. In a closed-circuit setup, fluid cycles directly between the pump and the motor without returning to a reservoir in the traditional sense. It's a fundamentally different design than open circuit, so no, you wouldn't drop this into an open circuit system and expect it to function right. The Eaton-39 is built specifically for closed-circuit mobile applications like construction equipment, ag machinery, and oil and gas rigs where that kind of precision and efficiency matters.