1. General Description

2. Key Specifications

• Model: 0514400317100LG

• Valve Type: 2-way, normally closed (fail-safe closed)

• Electrical Supply: 12 VDC or 24 VDC (selected at order; ±10% tolerance)

• Power Consumption: ≤ 25 W (max)

• Hydraulic Flow: 12 US gpm (45 L/min) @ 1000 psi (69 bar)

• Max Operating Pressure: 3000 psi (207 bar)

• Fluid Compatibility: Mineral hydraulic oils (ISO 4406 class 18/15 or better)

• Operating Temperature: -30°C to +80°C (-22°F to +176°F)

• Response Time: ≤ 20 ms (full stroke)

• Seal Material: Nitrile (standard); FKM (optional for high temp/chemical resistance)

• Protection Class: IP65 (solenoid housing)

• Weight: 0.8 kg (1.76 lbs)

3. Main Features

• Normally Closed Fail-Safe Design: Automatically shuts off fluid flow when power is lost, preventing unintended movement and complying with safety standards like EN 81 for elevators.

• Compact Cartridge Construction: Fits into standard manifold cavities, allowing high-density valve packaging. Saves space and simplifies system design compared to inline valves.

• Dual-Voltage Solenoid: Compatible with 12 VDC or 24 VDC systems, reducing inventory and simplifying integration into mixed-voltage fleets.

• High Flow Efficiency: Optimized internal geometry minimizes pressure drop, supporting efficient hydraulic system operation.

• Durable & Reliable: Industrial-grade materials and robust construction ensure long service life in harsh environments, with minimal maintenance requirements.

4. Installation

4.1 Manifold Mounting

4.2 Hydraulic Connections

• Port In (P): Connect to pressure supply line (max 3000 psi).

• Port Out (A): Connect to actuator or downstream hydraulic component.

• Use high-quality, clean hydraulic fluid filtered to ISO 4406 class 18/15 or better to prevent contamination and premature wear.

• Ensure all hydraulic fittings are tight and free of leaks before pressurizing the system.

4.3 Electrical Wiring

• Disconnect power before wiring to avoid electrical shock or damage to the solenoid.

• Connect the positive wire to the solenoid’s positive terminal (marked +) and the negative wire to the ground terminal (marked -).

• Use wire gauge appropriate for the solenoid current (16 AWG recommended for 12/24 VDC operation).

• Secure wiring with cable ties to prevent vibration damage and ensure the solenoid housing seal is intact to maintain IP65 protection.

5. Operation

5.1 Power-Up

5.2 Normal Operation

5.3 Shutdown

6. Maintenance

• Fluid Inspection: Check hydraulic fluid quality monthly. Replace fluid every 2000 operating hours or if contamination is detected.

• Filter Maintenance: Inspect system filters monthly and replace as needed to prevent debris from entering the valve.

• Solenoid Check: Verify solenoid operation quarterly. Check for loose wiring, damaged insulation, or overheating during operation.

• Seal Inspection: Inspect valve seals for leaks every 6 months. Replace seals if leaks are detected to prevent fluid loss and contamination.

• Cleaning: Keep the valve and manifold exterior clean. Avoid using harsh chemicals that may damage seals or housing.

7. Safety Warnings

• High Pressure Hazard: Hydraulic systems operate at high pressure. Relieve all pressure before servicing to avoid severe injury from fluid injection or component ejection.

• Electrical Hazard: Disconnect power before wiring or maintenance. 12/24 VDC can cause shock, especially in wet environments.

• Qualified Personnel: Installation, wiring, and maintenance must be performed by trained hydraulic and electrical technicians.

• Environmental Protection: Do not expose the valve to extreme temperatures, moisture, or corrosive chemicals. Store in a clean, dry area when not in use.

• Fail-Safe Caution: While the normally closed design enhances safety, always test valve operation after installation or maintenance to ensure proper function during power loss.

8. Troubleshooting

• No Flow When Energized: Check if power is applied correctly and solenoid is functional. Verify hydraulic supply pressure is adequate. Inspect for clogged ports or contaminated fluid.

• Leaks at Manifold: Check if valve is fully seated and lock nut is tightened to spec. Inspect seals for damage and replace if necessary.

• Slow Response: Verify fluid viscosity and temperature are within operating range. Check for low supply pressure or dirty fluid. Inspect solenoid for insufficient voltage.

• Solenoid Overheating: Check for incorrect voltage, loose wiring connections, or continuous energization beyond duty cycle. Verify solenoid resistance matches specifications.

9. Warranty