Control valve – 540 Series

1. Product Overview

The Electric Control Valve is a hydraulically operated valve controlled by electrical signals (Solenoid). It is a key device in automatic loading systems, working in coordination with flow controllers (such as Multiload II) to open/close the flow with milliliter-level precision, preventing tank overflow and mass measurement errors.

2. Standard Technical Specifications

3. Why Loading Systems Require Electric Control Valves

Unlike conventional shut-off valves, the electric control valve provides highly sophisticated flow control:

• Two-stage shut-off: Allows small opening to start, full opening for maximum flow, and gradual closing before complete shut-off. This eliminates water hammer that can rupture pipelines.
• High accuracy: Directly connected to flow computers for instant shut-off when the preset batch quantity is reached.
• Absolute safety: Designed with fail-safe closure in case of power loss or signal failure, preventing fuel overflow.

4. Key Features

• Digital control: Uses two solenoids (typically one normally open and one normally closed) to adjust diaphragm pressure, enabling ultra-smooth opening/closing.
• Self-cleaning: Flow through the valve helps remove small debris, reducing risk of jamming.
• Easy maintenance: Internal components (piston, diaphragm) can be replaced without removing the valve body from the pipeline.
• Flexible customization: Can integrate additional functions such as residual pressure control or maximum flow control directly on the valve assembly.

5. Practical Applications

• Truck loading racks: Final actuator in petroleum loading from storage to tank trucks.
• Marine fueling systems: Controls very large flow rates safely at port facilities.
• Chemical blending systems: Enables precise dosing of chemical components in industrial production.
• Airport fuel management: Used in refueling trucks or underground piping systems to supply aircraft fuel.