DOFLUID Proportional Valve PPG-02-180-04 H
2 week ago
Product details
DOFLUID Proportional Valve PPG-02-180-04 H is an electro-hydraulic proportional pressure control valve with high response characteristics. Below is a detailed introduction:
I. Core Features
1. Direct-Acting Operation and Closed-Loop Control
Utilizes a direct-acting design, adjusting system pressure precisely by positioning a movable iron core to compress a spring. Integrated electronic components (OBE) support voltage or current input signals (e.g., A1/B1 interfaces), forming a closed-loop feedback system to ensure stable pressure control.
2. Ultra-High Response Speed and Low Hysteresis
Features an extremely short response time with a hysteresis rate below 0.2%, making it suitable for scenarios requiring rapid dynamic adjustments. Even if electronic components fail, pressure remains limited to safe levels, preventing system overpressure.
3. Conical Seat Design and Pilot Control
The valve body adopts a conical seat structure, functioning as a remote-controlled (pilot) valve driven by a proportional solenoid for linear pressure regulation. Its design balances high precision and reliability.
II. Technical Specifications
• Pressure Range: Compatible with high-pressure conditions; specific rated pressure refers to the product manual (some models reach over 35 MPa).
• Flow Capacity: Supports high-flow demands; flow specifications correlate with valve port size (e.g., nominal diameter of 20 mm).
• Input Signal: Accepts voltage (e.g., DC 24V) or current signals, compatible with various control systems.
• Environmental Adaptability: Wide operating temperature range, suitable for normal to high-temperature environments (specific temperature range to be confirmed).
III. Applications
1. Industrial Hydraulic Systems
Used for pressure control in injection molding machines, die-casting machines, etc., ensuring stability during molding processes.
2. Construction Machinery
Regulates hydraulic system pressure in excavators, cranes, etc., enhancing operational precision.
3. Metallurgical and Energy Sectors
Applicable in high-pressure conditions such as blast furnaces and rolling mills, achieving dynamic pressure balance.
IV. Model Explanation
• PPG-02-180-04 H
• PPG: Product series code indicating a proportional pressure valve.
• 02: Design version or size code.
• 180: May relate to flow rate, pressure rating, or valve port size (refer to manual for details).
• 04: Input signal type or interface configuration (e.g., voltage/current input).
• H: May denote high-pressure specifications or special configurations (e.g., explosion-proof, corrosion-resistant).
V. Selection and Usage Recommendations
1. Parameter Matching
Select the appropriate model based on system pressure and flow requirements, and confirm input signal type (voltage/current) compatibility with the control system.
2. Installation and Maintenance
• Follow the manual for proper installation, ensuring correct valve orientation and preventing contaminant ingress.
• Regularly inspect electronic components and seals to prevent leaks or signal interference.
3. Spare Parts and Support
Purchase through official channels and retain technical documentation for future maintenance. Some suppliers offer customization services (e.g., special materials, interface configurations).
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