Double non-return valve for Grove GMK 5130

The double non-return valve 3319017 acts as a hydraulic safety component that permits fluid flow in one direction while blocking it in the opposite direction. By controlling two hydraulic lines, it ensures that pressure is maintained on one side of a cylinder or actuator, even if pump pressure decreases or is interrupted. This mechanism prevents unintended movement of suspended loads or equipment components, such as outrigger or boom cylinders, to maintain stability.

This component is compatible with the Grove GMK 5130 all-terrain crane. It integrates into the crane hydraulic system to provide precise control and position retention for the boom and other actuators during lifting operations.

Double non-return valves, also referred to as pilot-operated check valves or lock valves, serve to isolate hydraulic sections. They allow free flow in one direction and require external pilot pressure to open the passage in the opposite direction. This design provides a secondary layer of control, ensuring that actuators remain in a fixed position until the system intentionally commands a change in state.