PC100-2 Electro-hydraulic Controlled Multi-way Valve
ThePC100-2 Electro-hydraulic Controlled Multi-way Valveis a critical control component for hydraulic systems, integrating electromagnetic control and hydraulic actuation technologies. It is designed for high-flow hydraulic systems and is primarily used to control the operation of actuators or regulate the flow direction of hydraulic fluid.
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I. Working Principle
1. Electromagnetic Control:
• The valve uses a solenoid-operated directional control valve to control the movement of a hydraulic pilot valve, enabling the switching of fluid flow direction.
2. Hydraulic Actuation:
• Pressurized oil in the control circuit drives the valve spool to move, thereby controlling the opening/closing and directional changes of the main valve.
3. Balanced Orifice Circuit:
• Utilizes a balanced orifice circuit for closing operation. When the solenoid coil is energized, the drain port opens, releasing pressure from the upper chamber of the piston and opening the valve. When de-energized, the piston descends to close the valve.
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II. Structural Features
1. Modular Design:
• Combines a solenoid-operated directional valve with a hydraulic pilot valve, offering a simple and compact structure.
2. High Response Speed:
• Enables rapid directional changes to meet the demands of fast-acting hydraulic systems.
3. Precision Control:
• Computer-regulated solenoid pilot valves allow precise control of fluid flow rates in pipelines.
4. Flexible Installation:
• Can be installed in any orientation, though horizontal installation is preferred.
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III. Technical Specifications
1. Filtration Accuracy:
• Hydraulic medium must be filtered to20 μmto ensure system cleanliness.
2. Connection Surface Requirements:
• Surface roughness of valve body connections:Ra 0.8
• Flatness tolerance:0.01/100 mm
3. Back Pressure Valve Requirement:
• For internally controlled main valves, a back pressure valve with a cracking pressure >1 MPamust be installed in the return line.
• For externally controlled valves, a separate control return port must be provided.
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IV. Applications
1. Construction Machinery:
• Used in excavators, loaders, and other equipment to control the movement of working attachments.
2. Industrial Vehicles:
• Applied in forklifts, reach stackers, and similar vehicles to manage hydraulic system flow and pressure.
3. Other Hydraulic Equipment:
• Suitable for any hydraulic system with flow rates exceeding the capacity of solenoid-operated directional valves.
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V. Usage Precautions
1. Installation Requirements:
• Install according to the flow direction markings on the valve body to ensure correct orientation.
2. Pipeline Flushing:
• Flush pipelines after new construction, modification, or maintenance to prevent welding slag or debris from accumulating inside the valve.
3. Medium Requirements:
• The working medium should have a kinematic viscosity ≤40 cStand should not be prone to waxing.
4. Electrical Installation:
• Connect solenoid coils correctly as per the wiring diagram in the terminal box to avoid short circuits or open circuits.
