HYDRAULIC SYSTEM FOR DN500 GATE VALVE 140458

Product Overview:
This hydraulic actuation system is a robust and reliable solution designed specifically for the automated operation of DN500 (20-inch) gate valves. It is engineered to deliver high torque/thrust output for the smooth, controlled, and efficient opening and closing of large-diameter gate valves in demanding industrial applications. System reference code 140458 ensures precise component compatibility and performance.

Primary Applications:

• Water & Wastewater Treatment Plants (inlet/outlet, isolation)

• Oil & Gas Pipelines (isolation, blowdown)

• Power Generation Facilities (cooling water, feedwater)

• Mining & Mineral Processing

• Irrigation and Bulk Water Supply Networks

• Fire Protection Systems (main isolation)

Key Features & Benefits:

1. High-Output Hydraulic Actuator:

   • Generates the substantial linear force required to overcome high differential pressure and seat friction on DN500 valves.

   • Double-Acting or Spring-Return configurations available for fail-safe operation (open or close) upon power/fluid loss.

   • Durable construction with corrosion-resistant materials (e.g., coated steel, stainless steel piston rods) for long service life.

2. Integrated Hydraulic Power Unit (HPU):

   • Compact Design: All essential components (electric motor, hydraulic pump, reservoir, valves) housed in a single, weatherproof or explosion-proof enclosure as required.

   • Reliable Electric Motor: Standard voltages (e.g., 24VDC, 110VAC, 220VAC, 380VAC) available to drive the hydraulic pump.

   • Precise Control: Equipped with solenoid valves for remote electrical control (open/close/stop) and a manual pump override for emergency/local operation.

3. Advanced Control & Monitoring:

   • Position Feedback: Includes limit switches (mechanical or proximity) to signal full open and full closed valve positions to the control room (SCADA/DCS).

   • Pressure Regulation & Protection: Adjustable pressure relief valve protects the system from overload. System pressure is finely regulated for consistent, smooth valve stroking.

   • Optional position transmitter (4-20mA) for proportional, real-time valve position indication.

4. System Flexibility & Reliability:

   • Customizable Stroke Speed: Flow control valves allow adjustment of opening and closing times to suit process requirements and prevent water hammer.

   • Self-Contained: Requires only an electrical power supply and control signal for full operation, eliminating need for large, centralized hydraulic systems.

   • Low Maintenance: Designed for continuous duty with high-quality seals and filters to ensure fluid cleanliness and component longevity.

Typical System Components:

• Hydraulic Linear Actuator (Cylinder) with mounting kit for DN500 gate valve.

• Electric Hydraulic Power Unit (HPU) with reservoir, filter, and breather.

• Electric Motor (specify voltage/frequency).

• Directional Control Solenoid Valve (2-position, 4-way).

• Hydraulic Pressure Relief Valve.

• Flow Control Valves (for speed adjustment).

• Limit Switch Box (IP65/IP67 rated).

• Local Control Panel with selector switch and indicators (optional).

• Interconnecting high-pressure hydraulic hoses/fittings.

• Hydraulic Fluid (supplied or specified).

Technical Specifications:

• Valve Compatibility: DN500 (PN10/16/25, ANSI Class 150/300).

• Operating Pressure: Up to 210 bar (3000+ psi) typical.

• Output Thrust: [e.g., 50,000 – 200,000+ N] – dependent on valve torque requirements.

• Stroke Time: Adjustable, typically 30-120 seconds for full travel.

• Ambient Temperature Range: -20°C to +70°C (standard).

• Protection Class: Actuator: IP65/IP67; HPU: IP55/IP65 or Ex-d for hazardous areas.

• Control Signal: Standard 2-wire on/off, 3-wire (open/stop/close), or with PLC interface.