Nachi Double Vane Pump VDC-12A-2A3-2A*20/35 & VDC-12B-2A3-2A*20/35 Specifications

Model Interpretation

• VDC: Series name, representing Nachi high-pressure variable displacement vane pump, widely used in industrial high-pressure hydraulic systems.
• 12: Double pump identifier, indicating that the product is a twin (double) vane pump, integrating two independent vane pump units with optimized structure, which has higher flow stability and pressure-bearing capacity compared with the VDC-11 series double vane pump.
• A/B: Mounting method (A: Foot type mounting, sub plate type, sub plate not included; B: Flange mounting optional, suitable for different installation space and application scenarios).
• 2: Pump size, indicating the basic structural size of each single vane pump unit in the double pump (matched with the VDC-2 series single pump size, optimized for flow output).
• A: Ring size, corresponding to the matching size of the pump ring, ensuring stable operation and pressure resistance of the pump under high-flow working conditions.
• 3: Pressure adjustment range, corresponding to the high-pressure regulation specification for the VDC-12 series double vane pump, suitable for medium and high-pressure hydraulic system requirements.
• 2A: Flow characteristics, meaning dual constant discharge type, ensuring synchronous and stable flow output of both two pump units, with higher flow consistency, perfectly matching the working demand of dual-path hydraulic systems that require synchronous operation and stable power supply.
• *20/35: Design and matching code, 20 represents the basic design number of the pump, 35 represents the matching specification of the pressure control component, ensuring the pump’s pressure stability and control precision under high-flow and high-pressure conditions.

Detailed Technical Parameters

Key Features

• Dual-Path Synchronous Hydraulic Output: Integrates two independent vane pump units with optimized structure, providing stable dual-path hydraulic power output that can be used synchronously or independently. The dual constant discharge type (2A) ensures high flow consistency of the two units, perfectly adapting to the working demand of dual-path hydraulic systems that require synchronous operation, and saving installation space compared with two single pumps.
• High Pressure Stability & High-Flow Adaptability: With allowable peak pressure up to 3000 psi (214.3 kgf/cm²) and pressure adjustment range of 290-1800 psi, equipped with high-precision pressure control components (matching code 35), pressure control precision reaches ±0.3MPa, pressure fluctuation ≤0.1MPa. Optimized pump size and structure enhance high-flow adaptability, suitable for medium and high-pressure systems with high flow demand.
• Stable & Quiet Operation: Adopts 3-point ring support system and optimized structural design, combined with precision machining and noise reduction technology, operation noise is ≤55dB (1m distance), minimizing vibration and noise, suitable for precision machinery and indoor working scenarios.
• High Efficiency & Durability: Innovative mechanical design reduces power loss and improves overall system efficiency; high-strength reinforced cast iron material (enhanced for high-flow and high-pressure working conditions) enhances pressure-bearing capacity and wear resistance, ensuring long service life even under long-term continuous operation of double pump units.
• Easy Installation & Maintenance: Compact integrated structure, foot/flange optional mounting methods, adapting to different installation spaces; pressure and flow adjustment mechanisms of the two pump units are concentrated on the same side, simplifying maintenance and handling, reducing equipment downtime.
• Strong Adaptability: Wide shaft speed range (800-1800 min⁻¹), suitable for different power matching requirements; dual constant discharge type design ensures stable and consistent flow output of each pump unit, adapting to various industrial hydraulic system scenarios that require dual-path synchronous power supply.

Application Scope

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