ZCDB-F15 Series Sectional Directional control valves

2 month ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

3 year

Product details

P40 series monoblock hydraulic directional control valve

P40 series valves with middle-high pressure monoblock construction is developed based on Europe technology.

* Inner check valve: The check valve inside the valve body is to insure the hydraulic oil not to be returned.

* Inner relief valve: The relief valve inside the valve body is able to adjust the hydraulic system working pressure.

* Oil way: Parallel circuit, power beyond option.

* Control Way: Manual control, pneumatic control, hydraulic and electric control for optional.

* Valve construction: monoblock construction, 1-7 levers.

* Spool Function: O,Y, P,A.

* Option: Hydraulic lock is available to be added on A and B port.

* Available with manual, pneumatic control, electric and pneumatic control, hydraulic and electric control and etc.

The valve is widely used in hydraulic systems of construction machinery such as forklifts, sanitation trucks, and small loaders,etc.

1. Product Overview

TheZCDB-F15 Seriesis amodular (sectional) directional control valvedesigned by professional hydraulic valve manufacturers for precise control of hydraulic oil flow, direction, and on/off switching in industrial hydraulic systems, construction machinery, and agricultural equipment. Its key features includemodular assembly,high-pressure rating, andflexible valve section combinationsto meet diverse operational requirements.

Key Terms:

• Sectional Directional Control Valve: A valve composed of multiple independent sections (e.g., directional, pressure, or flow control valves) bolted together.

• Modular Design: Enables customization by adding/removing sections to reduce system modification costs.

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2. Core Structure & Functions

2.1 Modular Design

• Valve Section Types:

• Directional Control Sections: 2-position/3-position, 4-way (4/3) or 3-way (3/2) valves with manual, solenoid, or hydraulic pilot operation.

• Pressure Control Sections: Relief valves, pressure reducers.

• Flow Control Sections: Throttle valves, flow regulators.

• Connection Method:

• Bolt-On Assembly: High-strength bolts ensure leak-free sealing between sections.

• Internal Oil Passages: Designed for seamless hydraulic fluid flow between sections.

2.2 Performance Specifications

【表格】

Parameter Typical Range Notes

Rated Pressure 315 bar (4,570 psi) Forged steel body for medium-high pressure systems.

Max Flow Rate 150 L/min (40 GPM) Depends on port size (e.g., NG6/NG10).

Operation Modes Manual, solenoid, hydraulic pilot, electro-hydraulic proportional Solenoid response time <15ms; proportional valves support 4-20mA control.

Operating Temp -20°C to +80°C (-4°F to +176°F) Use fluororubber seals for high-temperature applications.

Leakage Class ISO 1219-1 Class IV (internal) Suitable for precision machinery (e.g., CNC machines).

2.3 Control Methods

• Manual: Lever or knob operation for fixed positions or debugging.

• Solenoid:

• Wet-Type Solenoid: Coil immersed in oil for better heat dissipation and longer life (recommended for continuous duty).

• Dry-Type Solenoid: External coil for explosion-proof or clean environments.

• Hydraulic Pilot (Pilot-Operated): Uses external hydraulic signals to drive the main spool, ideal for remote or high-flow systems.

• Electro-Hydraulic Proportional: Linearly adjusts port opening via current input (4-20mA) for stepless flow/pressure control.

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3. Typical Applications

3.1 Industrial Hydraulic Systems

• Injection Molding Machines: Controls clamping, injection, and packing cylinder directions.

• Die-Casting Machines: Regulates fast mold closing and slow injection hydraulic circuits.

• Bending Machines: Synchronizes ram descent speed and parallelism.

3.2 Construction Machinery

• Excavators: Distributes main pump hydraulic oil to boom, arm, and bucket cylinders.

• Loaders: Controls work device lifting and tilting actions.

• Cranes: Multi-way valve combinations enable luffing, slewing, and telescoping operations.

3.3 Agricultural Machinery

• Combine Harvesters: Adjusts header lifting and threshing drum speed via hydraulic drive.

• Tractors: Controls rear suspension system lifting/lowering.

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4. Key Selection Factors

4.1 Valve Section Configuration

• Basic Setup: Directional valve section (required) + pressure compensator section (recommended).

• Extended Setup: Add减压阀 (pressure reducer), check valve, or flow regulator sections based on system needs.

4.2 System Parameter Matching

• Pressure Matching: Valve rated pressure must exceed system max working pressure (with 20% margin).

• Flow Matching: Select port size based on pump output flow (e.g., NG6 for 60 L/min).

• Media Compatibility: Verify hydraulic fluid type (mineral oil, water-based fluid) impacts on seals.

4.3 Environmental & Reliability Requirements

• Vibration/Shock: Use vibration-resistant valve bodies (e.g., with shock mounts).

• Protection Rating: IP65 (dust/waterproof) for outdoor equipment.

• Lifespan: For high-frequency switching (e.g., robotics), select wear-resistant spool materials.

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5. Common Faults & Solutions

5.1 Spool Sticking

• Cause: Hydraulic oil contamination, spool wear.

• Solution: Clean valve body and replace filters; replace spool if severely worn.

5.2 Excessive Leakage

• Cause: Seal aging, valve body scratches.

• Solution: Replace O-rings or composite seals; valve body repair requires specialized equipment.

5.3 Solenoid Valve Inaction

• Cause: Coil burnout, insufficient voltage, spool jamming.

• Troubleshooting:

1. Measure coil resistance (±10% of standard value).

2. Check supply voltage (e.g., 24VDC ±15%).

3. Manually push spool to test mechanical function.

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6. Technical Support & Resources

• Selection Tool: Online configurator recommends models based on pressure, flow, and section requirements.

• Technical Documents: Download ZCDB-F15 series catalogs (including CAD models, performance curves, installation guides).

• Local Service: Contact authorized distributors for on-site commissioning or repair support.