Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of nachi hydraulic valves in China. We warmly welcome you to wholesale bulk nachi hydraulic valves for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Why Choose Yanhui Hydraulic?
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- Product selection and technical consultation
- Brand and specification cross-reference support
- Availability and lead time confirmation
- Export packaging and international logistics
- Support for maintenance, replacement, and OEM needs
Product Overview
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Nachi Hydraulic Valves are high-quality fluid control components designed to manage the direction, pressure, and flow of hydraulic oil in industrial and mobile hydraulic systems. Manufactured by Nachi-Fujikoshi, these valves are known for precise control performance, stable operation, and long service life under demanding working conditions.
Engineered to meet international hydraulic standards, Nachi Hydraulic Valves are widely used in automation equipment, machine tools, hydraulic power units, and heavy-duty industrial machinery. Their standardized mounting interfaces allow easy integration into existing systems and convenient replacement during maintenance or upgrades.
Key Advantages
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- Precision control: stable flow, pressure, and directional accuracy
- High-pressure reliability: durable under up to 35 MPa operation
- Low internal leakage: improves efficiency and reduces heat
- Long service life: wear-resistant materials and strict quality control
- Standardized mounting: ISO/CETOP compatible for easy integration
- Wide versatility: suitable for industrial and mobile hydraulic systems
- Continuous duty support: reliable under frequent cycling and long hours
- Easy integration: supports solenoid, pilot, manual, and proportional control
Technical Specifications
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| Specification | Typical Value / Range |
|---|---|
| Maximum Operating Pressure (Ports P/A/B) | Up to 35 MPa (5075 psi) |
| Maximum Operating Pressure (Port T) | Up to 16–21 MPa (2320–3045 psi) |
| Nominal Flow Capacity | 5 – 300 L/min (1.3 – 79 GPM) |
| Mounting Standards | ISO 4401 / CETOP / NFPA |
| Control Types | Solenoid-operated, Pilot-operated, Manual, Proportional |
| Hydraulic Fluid | Mineral Hydraulic Oil (ISO VG 32–68) |
| Recommended Filtration | ≤ 25–40 microns (NAS 1638 / ISO 4406) |
| Ambient Operating Temp | -10°C to +60°C (14°F to 140°F) |
| Service Temperature (Fluid) | -10°C to +80°C (varies by seal material) |
| Electrical Supply (Solenoid Valves) | AC or DC options (voltage selected per application) |
| Leakage (Internal) | Low internal leakage design for better control |
| Protection Rating (Electrical) | Varies with connector type, often IP64 / IP65 |
| Body Material | High-strength Cast Iron / Steel |
| Functional Parameter | Typical Performance |
|---|---|
| Pressure Control Accuracy | High repeatability with stable setpoint |
| Response Speed | Rapid spool actuation for precise control |
| Flow Regulation | Smooth proportional and fixed flow control |
| Contamination Sensitivity | Designed for robust service with recommended filtration |
| Mounting Interchangeability | Compatible with international valve footprint standards |
| Control Category | Function | Applications |
|---|---|---|
| Directional Control | Controls flow path and actuator direction | CNC machines, presses, injection molding |
| Pressure Control | Regulates and limits system pressure | Pump protection, safety circuits |
| Flow Control | Manages actuator speed | Cylinder speed control, synchronized movement |
| Proportional Valves | Variable flow/pressure via electrical signal | Automated and precision control systems |
| Modular/Stack Valves | Compact multi-function hydraulic circuits | Integrated power units |
Applications
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- CNC and Machine Tools: Precise directional control and pressure regulation for lathes, milling machines, and machining centers. Ensures accurate actuator movement and repeatable positioning.
- Injection Molding and Die-Casting Equipment: Smooth clamp force control, high-cycle pressure management, and consistent mold operation in plastic and metal forming systems.
- Industrial Hydraulic Power Units (HPUs): Stable flow distribution, system pressure regulation, and actuator speed control for centralized hydraulic systems.
- Automation and Production Lines: Fast-response valves for cylinder and hydraulic motor control. Supports synchronized movement and high-duty cycle operations in automated manufacturing.
- Construction and Mobile Equipment: Durable valves for heavy machinery, presses, and lifting systems, capable of handling high load, vibration, and harsh environments.
- Metal Forming and Processing: Accurate pressure and flow control for hydraulic presses, bending, rolling, and stamping machines, ensuring quality and repeatability.
- Energy, Steel, and Process Industry: Auxiliary hydraulic systems for positioning, tension control, and safety pressure regulation in continuous industrial operations.
- Maintenance, Retrofit, and Replacement Projects: Standardized mounting allows easy replacement of existing valves from other brands without system modification, minimizing downtime.
Related Models
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- Directional Control Valves
Manage the start, stop, and direction of hydraulic fluid flow. Available in solenoid-operated, pilot-operated, and manual actuation. Essential for controlling cylinder and motor movement with high precision.
- Pressure Control Valves
Regulate system pressure to protect components and maintain stable operation. Includes relief, reducing, sequence, and unloading valves. Ensures safe pressure limits and consistent system performance.
- Flow Control Valves
Control actuator speed by regulating flow rate. Used for synchronization, speed adjustment, and smooth motion control in industrial and mobile hydraulic systems.
- Proportional and Servo Valves
Provide variable control of flow and pressure via electrical input signals. Ideal for automated systems, CNC machinery, and precision motion control applications.
- Check Valves and Non-Return Valves
Allow unidirectional flow, prevent backflow, and maintain pressure in hydraulic circuits. Critical for safety and reliability in complex systems.
- Modular / Stack Valves
Compact multi-function assemblies that integrate directional, pressure, and flow functions into a single manifold. Reduce piping complexity and improve system efficiency.
- Pilot Valves
Control larger main valves by small pilot flows. Increase system responsiveness and reduce actuator energy consumption.
- Hydraulic Logic Valves
Enable sequence, priority, and pressure-dependent logic functions in hydraulic circuits. Support advanced industrial control applications.
FAQ
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Are Nachi hydraulic valves suitable for high-pressure applications?
Yes. Nachi Hydraulic Valves are designed for industrial systems operating under high pressure. Many valve categories support pressures up to industry-standard limits used in manufacturing and heavy equipment, provided the system is properly designed and maintained.
Are Nachi Hydraulic Valves compatible with automated control systems?
Yes. Solenoid-operated and proportional Nachi Hydraulic Valves can be integrated into automated and PLC-controlled systems, making them suitable for modern production lines and precision equipment.
How can incorrect valve selection affect a hydraulic system?
Using an incorrectly sized or mismatched valve can cause pressure loss, excessive heat, reduced efficiency, unstable operation, and premature component failure. Proper selection helps ensure safe and efficient system performance.
How long is the typical service life of Nachi Hydraulic Valves?
Service life depends on operating conditions, oil cleanliness, pressure levels, and maintenance practices. In well-maintained systems, Nachi valves can operate reliably for many years.
Contact Us
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For inquiries about Nachi Hydraulic Valves, technical support, or assistance with product selection and system integration, Yanhui Hydraulic Co., Ltd. is ready to help.
We specialize in supplying original hydraulic components from leading global brands and can provide guidance on compatibility, specifications, and system requirements.
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