This double pilot operated check valve is designed to hold hydraulic cylinders and prevent them from drifting down while your directional control valve is in the neutral position. Utilizing 4 additional socket head cap screws, this double pilot operated check valve will be sandwiched in between the D03 valves and manifold.
At rest the check valves remain seated, blocking flow from entering and exiting the cylinder and locking the cylinder in place.
When pressure is applied to either port, the check valve will open allowing free flow from the inlet to the actuator port across the check valve. When pressure builds and shifts the cylinder, the internal pilot piston will react quickly to the pressure and will shift against the return check. This action mechanically pilots the valve open to allow return flow to pass through the valve from the actuator back to tank. With both ports now open, the valve is unlocked and the hydraulically powered cylinder is now free to move. When system pressure is shut off to the valve, the valve will then return to the holding condition.
Our check valve can be purchased with our Connect Under Pressure AG Style Couplers, which can be selected from a drop-down menu above. These couplers allow for easy connection and disconnection from the check valve without bleeding pressure. This convenient design makes it easy to ensure pressure will not get trapped.
This kit is a great addition to our D03 style third function kits!
- Prevents a load from falling if a hose ever fails.
- Hardened, precision ground parts for durability.
- Prevent leak down from occurring during heavy lifting.
- Max Working Pressure: 4568 PSI
- Max Flow: 15.85 GPM
- Working Fluid: Mineral oil; Phosphate-ester
- Fluid Temperature: 68F – 158F
- Connection: NG06
- Check Valve (Ports): A + B
- Weight: 1.8 lbs