Control Valves

Control Valve

A control valve is a critical component in any process system where the flow of liquids, gases or steam must be regulated. Installed in the process loop, it ensures precise control over pressure, temperature, flow rate or level. At Ebora, we supply industrial control valves for a wide range of media and industries, including water, steam, chemicals and compressed air.

What is the function of a control valve?

The main role of a control valve is to adjust the flow passage based on input from a controller, keeping process conditions within desired limits. Acting as the final control element, it receives signals—often from a PLC—and opens or closes accordingly. This ensures product consistency, process stability and operational safety.

Where are control valves used?

Control valves are applied in industries where process dynamics are variable and accurate flow regulation is required. These include food production, pharmaceuticals, petrochemicals, water treatment and HVAC systems. Whether you need to control temperature, pressure or volume, a suitable control valve is key to reliable operation.

What type of control valve is used in industry?

Industrial environments demand different types of control valves, depending on the application and media:

• Globe valve: ideal for precise flow control and general-purpose use.
• Ball control valve: fast-acting and low-pressure drop, used in high-volume flows.
• Butterfly valve: lightweight, cost-effective and suited for large diameters.
• Pressure control valve: used to automatically regulate system pressure.

Valves can be operated electrically, pneumatically or hydraulically, and are often paired with a positioner for improved accuracy.

What does a control valve do in a process loop?

In a closed loop, a control valve works with a sensor and a controller. The sensor measures a variable, the controller compares it to the setpoint, and the valve adjusts accordingly. This real-time adjustment stabilizes the process, improves product quality and reduces manual intervention.

What is control valve authority?

Valve authority refers to the control valve’s ability to influence the process. It is calculated as the ratio between the pressure drop across the valve and the total pressure drop in the system. Low authority leads to poor control and instability. Our experts help you select a valve with the right authority for your specific setup.

How does a pressure control valve work?

A pressure control valve maintains the system pressure at a predefined level. It operates automatically without the need for external control. Pressure reducing valves lower outlet pressure, while relief valves protect the system from overpressure. They are essential for safety and efficiency in both low- and high-pressure systems.

Control Valves by Ebora

At Ebora, we supply top-quality control valves from brands like ARI Armaturen and Spirax Sarco. Whether you need standard valves or complete control assemblies with actuator and positioner, we deliver both flexibility and performance. Our specialists offer expert advice to help you choose the right solution.

Contact us for tailored recommendations or a custom quote.