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Control Valve-Pump Matching Principle:
- The control valve is customized to the pump’s displacement and flow capacity to ensure pressure/flow regulation accuracy.
- Both pumps can be equipped with optional electro-hydraulic proportional control valves for intelligent automation systems.
What are the key performance advantages of the products?
A. A11VO Series Hydraulic Control Valve
- High-Pressure Precision: 400 bar maximum pressure with ±1% pressure control accuracy, ideal for heavy-load hydraulic systems (e.g., large excavators, forging presses).
- Dual Control Modes: Hydraulic pilot (reliable for harsh environments) and electro-hydraulic proportional (for intelligent automation) options meet diverse application needs.
- Integrated Design: Combines pressure relief, flow control, and directional control functions, simplifying system layout and reducing installation space.
- Durable Sealing: Viton+PTFE seals withstand high temperatures and pressure, extending service life to ≥ 10,000 operating hours.
B. A11VO190/A11VO260LRDS Pumps & Spare Parts
- Heavy-Duty Durability: Forged steel pump body and chrome-plated piston assembly withstand 400 bar pressure; service life ≥ 12,000 operating hours.
- High-Flow Efficiency: A11VO260LRDS delivers 500+ L/min flow, suitable for large hydraulic systems requiring high power output.
- Genuine Spare Parts Compatibility: 100% matching with original A11VO pumps, ensuring seamless replacement and maintaining pump performance.
- Wide Adaptability: Operate reliably in -20°C to +100°C temperatures and 10-400 mm²/s oil viscosity, compatible with mineral-based and synthetic hydraulic oils.
Which applications are the products suitable for?
A. A11VO Series Hydraulic Control Valve
- Heavy construction machinery (large excavators, crawler cranes, concrete pumps)
- Industrial heavy equipment (large hydraulic presses, forging machines, steel rolling mills)
- Mining equipment (underground loaders, crusher feed systems, mine hoists)
- Marine/offshore equipment (offshore platform hydraulic units, large ship deck machinery)
B. A11VO190 Pump
- Medium-large construction machinery (wheel loaders, medium excavators, hydraulic cranes)
- Industrial machinery (plastic injection molding machines, paper machine main drives)
- Agricultural machinery (large tractors, combine harvesters with high-power hydraulic systems)
C. A11VO260LRDS Pump
- Ultra-large construction machinery (super-large excavators, crawler cranes ≥200 tons)
- Heavy industrial systems (large forging presses, hydraulic power units for steel plants)
- Mining equipment (large underground haulers, rock drills)
- Offshore hydraulic systems (oil drilling rigs, offshore wind turbine hydraulic units)
D. Spare Parts
- Maintenance and repair of A11VO190/A11VO260LRDS pumps and matching control valves
- After-sales service for construction, industrial, and mining machinery
- Inventory stock for equipment rental companies and maintenance workshops
What are the installation and maintenance requirements?
A. Installation Requirements
- Control Valve-Pump Matching: Ensure the control valve model matches the pump displacement (e.g., CV11VO260LR for A11VO260LRDS).
- Concentricity & Mounting: For pumps, ensure pump-motor concentricity ≤ 0.1 mm; use flexible couplings. For control valves, torque flange bolts to 90-100 N·m (66-74 ft-lbs) per SAE standards.
- Cleanliness Assurance: Clean mounting interfaces and hydraulic lines before installation to avoid contaminant-induced component damage.
- Pressure Calibration: After installing the control valve, calibrate the pressure to the system’s required value (refer to the pump’s service manual).
