Jiaheng Hydraulic Lifting Valve is designed to control the lifting, holding and lowering functions of hydraulic cylinders in mobile and industrial lifting systems. By regulating hydraulic oil direction, pressure and flow, the valve helps achieve smooth lifting, stable load holding and controlled movement under varying loads.
With rated pressures of 16–40 MPa and flow ranges from 5 to 500 L/min, the lifting valve can be configured for construction machinery, aerial work platforms, lifting equipment and other hydraulic systems requiring reliable load control.
Hydraulic Lifting Valve Specifications
| Parameter | Specification |
|---|
| Valve Diameter | 6–32 mm |
| Rated Pressure | 16–40 MPa |
| Flow Range | 5–500 L/min |
| Response Time | ≤30 ms |
| Control Methods | Electromagnetic, hydraulic or manual emergency control |
| Sealing Leakage Rate | ≤5 drops/min under rated pressure |
| Operating Temperature | -40°C to +80°C |
| Communication | CANopen available |
| Lifting Speed Adjustment | 0.1–5 m/min |
Specifications can be configured according to hydraulic system requirements.
Technical Advantages and Features
(1) Triple safety locking design
Hydraulic locking: Equipped with dual hydraulic control one-way valves, it locks the position of the oil cylinder in case of pressure loss, with a locking error of ≤ 0.5mm (10 meter stroke);
Mechanical locking: optional mechanical pin structure, with a locking force of ≥ 120% of the rated load when carrying;
Pressure sensing locking: When the system pressure fluctuates by more than 10%, the backup seal compensation is automatically triggered to maintain the pressure holding state.
(2) Anti impact dynamic response
The valve core adopts a conical surface+damping hole structure, with an impact pressure attenuation rate of ≥ 40% (such as during emergency stop of high-altitude operation vehicles);
Equipped with a built-in buffer valve group, the speed fluctuation during lifting start stop is ≤ ± 5% to avoid load shaking (typical application: leveling of lifting equipment for port cranes).
(3) Long life sealing technology
The main seal adopts a polyurethane+metal skeleton composite structure, with a wear resistance of ≥ 100000 times (50 lifts per day can be used for 5 years);
Dust seal labyrinth design (protection level IP67), blocking more than 99% of dust intrusion, suitable for harsh working conditions such as mining and metallurgy.
(4) Intelligent integrated design
Integrated pressure sensor (accuracy ± 0.5% FS) and displacement feedback module, real-time monitoring of lifting status;
Support CANopen bus communication, remote adjustment of lifting speed (adjustable from 0.1-5m/min) and pressure threshold.
(5) Adaptability to all operating conditions
Temperature resistance -40 ℃~+80 ℃, response time ≤ 50ms in -20 ℃ environment;
The anti vibration performance reaches 50Hz and 50g acceleration (ISO 16750 standard), suitable for bumpy scenarios of construction machinery.
What Does a Hydraulic Lifting Valve Do?
The Hydraulic Lifting Valve controls hydraulic oil between the pump and actuator so that the lifting mechanism can perform several critical functions.
● Lifting Control
Directs hydraulic flow to the cylinder to raise the load smoothly.
● Load Holding
Maintains cylinder position when lifting stops and helps prevent unintended load descent.
● Controlled Lowering
Regulates return oil flow to provide stable and predictable lowering movement.
● Pressure Protection
Helps limit excessive hydraulic pressure and protects the lifting mechanism against overload conditions.
● Emergency Control
Manual emergency control can be configured for applications requiring backup operation during electrical or hydraulic control failure.
Stable Load Holding for Safer Lifting
Reliable load holding is particularly important in aerial platforms, construction machinery and other systems where unexpected cylinder movement may create operational risks.
Jiaheng Hydraulic Lifting Valve can integrate dual pilot-operated check valves to hydraulically lock the cylinder position when system pressure is lost. Optional mechanical locking structures can also be configured according to the equipment and load requirements.
This multi-level locking design helps improve load stability during lifting, stopping and holding operations.
Smooth Lifting and Lowering Under Changing Loads
Sudden valve opening or closing can cause pressure shocks, load shaking and unstable movement.
The Hydraulic Lifting Valve uses a valve spool and damping structure designed to reduce hydraulic impact during start-stop operation. An integrated buffering valve group can further stabilize speed changes, making the valve suitable for equipment requiring smoother lifting and positioning.
This is particularly useful for:
● Aerial work platforms
● Port lifting equipment
● Truck-mounted lifting systems
● Construction machinery
● Industrial lifting platforms
Hydraulic Lifting Valve Applications
The valve is suitable for hydraulic lifting systems where controlled cylinder movement and reliable load holding are required.
Aerial Work Platforms
Controls platform lifting and lowering while helping maintain cylinder position during operation at height.
Construction Machinery
Suitable for loaders, lifting mechanisms and other construction equipment operating under high loads and changing working conditions.
Hydraulic Lifting Platforms
Provides controlled oil flow for smooth platform movement, load holding and safe lowering.
Material Handling Equipment
Used in hydraulic lifting mechanisms for loading, positioning and material handling operations.
Port and Heavy Lifting Equipment
Can be integrated into lifting systems requiring stable start-stop control and reduced load oscillation.
Industrial Hydraulic Systems
Suitable for customized machinery using hydraulic cylinders for lifting, positioning or load-holding functions.
When Should You Choose a Hydraulic Lifting Valve?
A dedicated Hydraulic Lifting Valve should be considered when the application requires more than simple hydraulic oil direction control.
It is particularly suitable when you need:
● Smooth lifting and lowering
● Reliable load holding
● Protection against unintended cylinder movement
● Controlled movement under changing loads
● Pressure and overload protection
● Reduced hydraulic shock during start and stop
● Emergency manual operation
● Electronic pressure or position feedback
● Integration with intelligent machine control systems
For basic hydraulic circuits where only directional switching is required, a standard directional valve may be sufficient. For lifting equipment where load safety, holding stability and lowering control are critical, a dedicated lifting valve provides a more application-specific solution.
How to Select the Right Hydraulic Lifting Valve
The correct valve should be matched to both the hydraulic circuit and lifting mechanism.
Before selecting a valve, confirm the following parameters:
● Maximum working pressure
● Required flow rate
● Cylinder bore and stroke
● Maximum lifting load
● Required lifting and lowering speed
● Valve port size
● Control method
● Hydraulic oil type
● Operating temperature
● Load-holding requirements
● Installation dimensions
● Electrical voltage and communication requirements
An oversized valve may reduce control precision, while insufficient flow capacity can restrict cylinder speed. Pressure rating must also provide appropriate margin above the normal working pressure of the lifting system.
Customized Hydraulic Lifting Valve Solutions
Different lifting machines have different pressure, flow, installation and control requirements.
Jiaheng can provide Hydraulic Lifting Valve configurations according to your hydraulic system, including:
● Pressure and flow requirements
● Port size and connection
● Electromagnetic or hydraulic control
● Manual emergency operation
● Load-holding valve configuration
● Pressure sensing
● Displacement feedback
● CANopen communication
● Installation interface
● Application-specific hydraulic circuit requirements
Provide your hydraulic schematic, cylinder parameters, maximum load, working pressure and required flow rate to help us recommend a suitable valve configuration.
Why Choose Jiaheng for Hydraulic Lifting Valves?
Jiaheng develops hydraulic components for lifting systems used in construction vehicles, material handling equipment and other heavy-duty machinery.
By integrating the Hydraulic Lifting Valve with cylinders, pumps, oil tanks, hydraulic pipes and other components, customers can obtain a hydraulic solution matched to the operating requirements of the complete lifting system.
Contact us with your system parameters for valve selection or customized hydraulic lifting system support.
