4WRZ/H(E) Series Pilot Operated Proportional Directional Hydraulic Valve

The 4WRZ/H(E) series pilot-operated proportional directional hydraulic valve is a state-of-the-art component designed to provide exceptional precision, control, and efficiency in hydraulic systems. With its advanced pilot-operated proportional control technology, this valve enables accurate flow regulation and seamless directional changes.

The 4WRZ/H(E) series pilot-operated proportional directional hydraulic valve empowers hydraulic systems with precise flow control, versatile directional changes, and energy efficiency. Its pilot-operated proportional control technology ensures accurate and responsive flow adjustment, while the high flow capacity guarantees reliable performance even in demanding applications. By following the recommended usage methods and maintenance guidelines, you can maximize the benefits and longevity of the 4WRZ/H(E) series valve, elevating your hydraulic system to new levels of precision and control. Upgrade your hydraulic setup today and experience the power of the 4WRZ/H(E) series pilot-operated proportional directional hydraulic valve.

4WRZ/H(E) Series Pilot Operated Proportional Directional Hydraulic Valve Key Characteristics:

1. Pilot-Operated Proportional Control

• The 4WRZ/H(E) series valve utilizes pilot-operated proportional control technology, allowing precise and proportional flow adjustment based on control signals.
• This feature ensures accurate and responsive control, resulting in improved system performance, reduced energy consumption, and enhanced productivity.

2. Versatile Directional Control

• This valve offers versatile control over hydraulic fluid direction, making it suitable for a wide range of applications.
• It enables seamless activation and deactivation of hydraulic components such as cylinders, motors, and actuators in different directions, enhancing system flexibility and adaptability.

3. High Flow Capacity

• The 4WRZ/H(E) series valve is engineered to handle high flow rates, making it ideal for applications that require substantial hydraulic power.
• Its robust construction ensures reliable performance even under demanding conditions, providing consistent and efficient flow control.

4. Energy Efficiency

• By incorporating pilot-operated proportional control, this valve minimizes pressure drops and optimizes energy usage.
• It helps reduce energy consumption, resulting in cost savings and environmental benefits.

4WRZ/H(E) Series Pilot Operated Proportional Directional Hydraulic Valve Parameter:

4WRZ/H(E) Series Pilot Operated Proportional Directional Hydraulic Valve Advantages:

• Pilot-operated two-stage proportional directional valve, used to control the size and direction of the liquid flow
• Threaded connection type proportional solenoid, the coil can be disassembled separately
• Sub-plate mounting connection structure, connection size conforms to DIN2430 and ISO4401 standards
• Spool spring alignment alignment
• WRZE type with integrated proportional amplifierr
• WRZ type external amplifier (order separately)

Usage Method Of 4WRZ/H(E) Series Pilot Operated Proportional Directional Hydraulic Valve:

1. System Evaluation

• Evaluate your hydraulic system and identify the specific flow and directional control requirements.
• Determine if the 4WRZ/H(E) series valve is suitable based on its flow capacity, pressure rating, and compatibility with your system.

2. Valve Selection

• Select the appropriate variant of the 4WRZ/H(E) series valve based on your system parameters, flow requirements, and directional control needs.
• Consider factors such as maximum flow rate, pressure rating, response time, and operational conditions.

3. Installation

• Follow the manufacturer’s installation instructions carefully, ensuring proper alignment and secure mounting of the valve.
• Make leak-free connections and ensure the correct flow direction alignment to guarantee optimal performance.

4. Control Signal Connection

• Connect the control signal wires of the valve to a suitable control device, such as a proportional amplifier or electronic control unit.
• Ensure proper wiring and compatibility between the valve and the control device for accurate and responsive control.

How To Bleed Hydraulic Control Valve?

Bleeding a hydraulic control valve is an essential maintenance procedure to remove any trapped air or gas from the system, ensuring optimal performance and efficiency. Here’s a step-by-step guide on how to bleed a hydraulic control valve:

1. Prepare the System:
   • Ensure that the hydraulic system is turned off and that the pressure is relieved. This step is crucial for your safety and to prevent any accidental movement or release of high-pressure fluids.
   • Locate the bleeder valve or bleed screw on the hydraulic control valve. It is typically located on the top or side of the valve body and may have a protective cap or cover.
2. Positioning and Safety Measures:
   • Place a suitable container or absorbent material beneath the bleed valve to catch any fluid that may be expelled during the bleeding process.
   • Wear appropriate personal protective equipment (PPE), such as safety goggles and gloves, to protect yourself from hydraulic fluid splashes.
3. Opening the Bleed Valve:
   • Using an appropriate wrench or tool, carefully loosen the bleed valve or screw counterclockwise. Be cautious not to fully remove it at this stage.
   • The bleed valve may have an O-ring or sealing washer. Take note of its position and ensure it is in good condition.
4. System Activation:
   • Activate the hydraulic system by turning on the power source, such as an engine or hydraulic pump.
   • Operate the control mechanism associated with the hydraulic control valve, such as a joystick or lever, to allow fluid flow through the valve.
5. Bleeding Process:
   • Slowly open the bleed valve by turning it counterclockwise until you start to see hydraulic fluid or air bubbles escaping from the valve.
   • Allow the fluid to flow for a few seconds or until you observe a steady stream of fluid without any air bubbles. This indicates that the air has been purged from the system.
   • Be cautious not to open the bleed valve too much, as it may lead to excessive fluid loss or system damage.
6. Closing the Bleed Valve:
   • Once you have successfully bled the system, close the bleed valve by turning it clockwise. Ensure it is tightened securely but avoid over-tightening.
   • Check for any leaks around the bleed valve or other connections. If you notice any leaks, address them promptly to prevent further issues.
7. System Check:
   • Turn off the hydraulic system and inspect the fluid level in the reservoir. Add hydraulic fluid as necessary to maintain the recommended level.
   • Test the operation of the hydraulic control valve and associated components to ensure proper functionality.

工厂的能力和产能：

(1) 装配

我们拥有一流的自主研发装配平台。液压油缸生产车间拥有 4 条半自动提升油缸装配线和 1 条全自动倾斜油缸装配线，设计年生产能力 100 万支。特种油缸车间配备了各种规格的半自动清洗装配系统，设计年生产能力 20 万只，并配备了知名数控加工设备、加工中心、高精度油缸加工专用设备、机器人焊接机、自动清洗机、油缸自动装配机、自动喷漆生产线等。现有关键设备 300 多台（套）。设备资源的优化配置和高效利用，保证了产品的精度要求，满足了产品的高质量需求。

(2) 机加工

加工车间配备了定制的斜轨车削中心、加工中心、高速珩磨机、焊接机器人及其他相关设备，可加工最大内径 400 毫米、最大长度 6 米的气缸管。

(3) 焊接

(4) 油漆和涂料

配备中小型圆筒自动水性漆喷涂线，实现机器人自动上下料和自动喷涂，设计产能为每班 4000 件；
我们还拥有一条由动力链驱动的大型油缸半自动喷漆生产线，设计产能为每班 60 箱。

(5) 测试

我们拥有一流的检验设施和试验台，确保气缸的性能符合要求。

We are one of the best hydraulic cylinder manufacturers. We can offer comprehensive hydraulic cylinders. We also provide corresponding 农用齿轮箱. We have exported our products to clients worldwide and earned a good reputation because of our superior product quality and after-sales service. We welcome customers at home and abroad to contact us to negotiate business, exchange information, and 与我们合作!