Direct-Acting Servo Proportional Valve

Direct-Acting Servo Proportional Valve

2 month ago

4 0

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

I. Basic Structure and Working Principle

TheDLHZO-TES Direct-Acting Servo Proportional Valvefeatures a valve sleeve design, comprising core components such as a high-response proportional solenoid, valve body, valve sleeve, spool, position sensor (e.g., LVDT), and an integrated digital amplifier. Its operation is based on electro-hydraulic proportional control technology. The proportional solenoid directly drives the spool movement, while the position sensor continuously monitors spool displacement and feeds the signal back to the digital amplifier, forming a closed-loop control system. This design eliminates the hydraulic amplification stage found in traditional servo valves, simplifying the system structure while ensuring control precision through electronic feedback.

------

II. Key Performance Parameters

1. Flow and Pressure Range

• Maximum Flow: 70 l/min (size 06) to 160 l/min (size 10)

• Maximum Operating Pressure: 350 bar (DLHZO series) or 315 bar (DLKZOR series)

• Single-Side Valve Port Pressure Drop: 3.5 MPa

2. Dynamic Response Characteristics

• Response Time: ≤20 ms (0–100% step signal)

• Frequency Bandwidth: -3 dB at 40 Hz

• Hysteresis: <0.1%

• Repeatability: ±0.1%

3. Environmental Adaptability

• Operating Temperature Range: -20°C to +80°C

• Protection Class: IP65 (dust- and water-resistant)

------

III. Functional Features

1. High-Precision Closed-Loop Control

Integrates an LVDT position sensor and digital amplifier for real-time spool position feedback and precise adjustment, suitable for closed-loop control of position, velocity, pressure, and other parameters.

2. Strong Contamination Resistance

The zero-overlap design between the spool and sleeve reduces internal leakage, while lower oil cleanliness requirements compared to traditional servo valves extend maintenance intervals.

3. Energy Efficiency and Reliability

• Direct-acting structure eliminates pilot-stage flow losses, reducing energy consumption.

• Built-in power-failure protection ensures the spool automatically returns to neutral upon power loss, ensuring system safety.

• Shock-resistant design adapts to harsh conditions, while the valve sleeve structure enhances adjustment precision and response sensitivity.

4. Flexible Configuration Options

• Supports analog/digital interfaces (e.g., USB, CANopen, PROFIBUS DP, EtherCAT) for fieldbus communication.

• Optional modules for P/Q composite control, pressure/force control, and load sensor feedback.

------

IV. Typical Applications

1. Metallurgical Equipment: Hydraulic synchronization control, position control for continuous casting machine straightening machines.

2. Injection Molding Machinery: Speed and pressure regulation for mold opening/closing, improving product molding quality.

3. Servo Cylinder Control: Paired with digital controllers for high-precision motion control, such as in machine tool feed systems.

4. Testing Equipment: Material testing machines, structural fatigue test benches, and other scenarios requiring dynamic load control.

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：