Hydraulic Counterbalance Valve FD12FA

Hydraulic Counterbalance Valve FD12FA

3 week ago

0 0

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

Hydraulic Counterbalance Valve FD12FA

TheFD12FAis a pilot-operated hydraulic counterbalance valve designed to control load descent speed and ensure system stability in heavy-duty applications. Below is a detailed technical overview:

------

I. Functions & Applications

1. Controlled Load Descent

• As a pilot-operated check-sequence valve, the FD12FA regulates fluid pressure to control the descent speed of loads. When lowering, the valve opens automatically to allow smooth oil flow, preventing rapid or uncontrolled descent. Upon full lowering, it closes to lock the load in position, avoiding drift due to leakage.

• Key Application: Crane hoisting systems (main/auxiliary winches) to ensure safe, stable lifting/lowering of heavy loads.

2. System Overload Protection

• In case of hydraulic line failure or actuator (e.g., cylinder, motor) runaway, the valve provides motion control by matching oil supply speed to pump flow, preventing pressure spikes or load instability.

• Its built-in check valve prevents backflow, safeguarding the system from reverse pressure.

3. Load Holding & Positioning

• The valve maintains tight sealing for extended periods, ensuring precise load positioning without displacement. This is critical in applications requiring high accuracy, such as excavators, loaders, and marine deck cranes.

------

II. Technical Features

1. Pilot Control & Adjustable Backpressure

• Pilot-operated design enables external signal (e.g., pilot pressure) control for precise valve activation.

• Users can adjust backpressure to suit varying load requirements, ensuring optimal system performance.

2. Flexible Installation Options

• Mounting Types:

• Subplate-mounted(e.g., FD12PA): Compact design for space-constrained systems.

• Flange-mounted(e.g., FD12FB): Equipped with an external secondary relief valve for enhanced system protection.

• Manifold-mounted: Compatible with standard hydraulic manifolds for modular integration.

3. High Pressure & Flow Capacity

• Rated for pressures up to25 MPa (3,625 PSI)and flows up to250 L/min (66 GPM), suitable for heavy-duty machinery.

------

III. Typical Applications

1. Construction Machinery

• Excavators: Controls boom/arm descent speed under load.

• Wheel Loaders: Regulates bucket lowering to resist external forces (e.g., uneven terrain).

2. Material Handling

• Forklifts: Prevents rapid mast lowering during heavy lifting.

• Conveyor Systems: Maintains tension in hydraulic-driven belts.

3. Marine & Offshore Engineering

• Deck Cranes: Stabilizes load movement in rough sea conditions.

• Fishing Equipment: Controls hydraulic winch operation for net handling.

------

IV. Selection & Usage Guidelines

1. Model Selection

• Choose from variants likeFD12FA12B/B00(standard) orFD12FA12B/B30(with specific port configurations) based on system pressure, flow, and installation requirements.

• For flange-mounted systems, preferFD12FBfor integrated secondary relief protection.

2. Parameter Adjustment

• Set valve opening pressure and backpressure according to load weight and system dynamics to balance stability and efficiency.

3. Maintenance & Inspection

• Regularly check sealing performance and pilot control components for wear or contamination.

• Flush the valve during oil changes or system repairs to prevent debris-induced malfunctions.

Contact Now

If you are interested in the product, contact 2bvideo.com for more information for more information

To:: Ningbo Hengnuo Hydraulic Drive Co.,Ltd

Message:

Submit

Disclaimer：

The information of 2bvideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of 2bvideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation. If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

4 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box , hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

 Contact now

Disclaimer：