#### **I. Product Overview**
The
Hydraulic Flow Control valve is a key control component in the
Hydraulic System, used for precisely regulating the oil flow. It achieves the speed control of the actuator by changing the flow area of the throttle port. This series of products adopts advanced hydraulic control technology, featuring high adjustment accuracy, good stability, and fast response speed. They are widely used in speed control systems of construction machinery, metallurgical equipment, injection molding machinery, and other fields.
---
#### 2. Core Functional Features
1. **Precise Flow Regulation**
- Wide flow regulation range (5 - 300 L/min)
- Regulation accuracy ±2%
- Minimum stable flow ≤ 2 L/min
2. **Pressure Compensation Function**
- Built-in pressure compensator
- Maintains constant flow even when load changes
- Compensation accuracy: ±5%
3. **Multiple Control Modes**
- Manual adjustment type
- Electromagnetic proportional control type
- Electro-hydraulic servo control type (optional)
4. **Special Function Configuration**
- Unidirectional Throttling Function
- Overload Protection Function
- Temperature Compensation Function (Optional)
---
#### **III. Technical Parameter Indicators**
| Parameter Item | Technical Specifications | Notes | |-----------------|--------------------------|--------------------------|
| Rated Pressure | 21-35 MPa | Customizable high-pressure models |
| Flow Regulation Range | 5-300 L/min | Multiple specification models |
| Pressure Compensation Range | 0.5-31.5 MPa | |
| Working Oil Temperature Range | -20℃~+80℃ | Special models can reach -40℃~+120℃ |
| Response Time | ≤50ms (Proportional Valve) | |
| Repeatability Precision | ≤1% | Servo Valve can reach 0.5% |
| Medium Viscosity Range | 15-400 cSt | |
---
#### **IV. Product Series Classification**
1. **Common Throttle Valve**
- Simple structure, economical and practical
- Suitable for general speed control applications
2. **Speed Control Valve**
- Equipped with pressure compensation function
- Maintains stable speed even when load changes
3. **Proportional Flow Valve**
- Controlled by electrical signals
- Capable of achieving stepless speed regulation
- With fast response speed
4. **Diversion Flow Control Valve**
- Precise flow distribution
- Specialized for synchronous control
---
#### **V. Typical Application Domains**
1. **Construction Machinery**
- Control of walking speed for excavators
- Speed adjustment for crane luffing
- Frequency adjustment for vibratory rollers
2. **Industrial Hydraulics**
- Injection speed control for injection molding machines
- Speed regulation of the feed system in machine tools
- Adjustment of the gap between rolls in rolling machines
3. **Special Equipment**
- Wind turbine pitch control system
- Ship rudder control system
- Aerospace actuators
---
#### **VI. Core Product Advantages**
1. **Precise Control**
- Utilize high-precision valve core and valve sleeve assembly
- Optimized flow characteristic curve
- Minimum stable flow rate can reach 1L/min
2. **Reliable and durable**
- Key components are hardened
- Sealing parts are made of imported materials
- Service life ≥ 1 million cycles
3. **Energy-saving and High Efficiency**
- Low pressure loss (≤ 0.5 MPa)
- Fast response speed
- High energy utilization rate
4. **Intelligent Control**
- Optional digital controller
- Supports bus communication (such as CANopen)
- Fault self-diagnosis function
---
#### **VII. Selection Guide**
1. **Determine the flow range**
- Select based on the requirements of the actuator
- Consider the margin (recommendation: 20%)
2. **Selection of Control Modes**
- Manual adjustment: Economical option
- Electromagnetic proportional: Automated control
- Servo control: Suitable for high-precision applications
3. **Take environmental factors into consideration**
- Explosion-proof requirements
- Temperature range
- Protection level (up to IP67)
4. **Special Function Requirements**
- Pressure compensation
- Temperature compensation
- Overload protection
---
Contact Now