Control Valve

Valvesonly Europe is of the largest Control valve manufacturers in Germany. A control valve is a mechanical device designed to manipulate the flow of fluids or gases by varying the size of the flow passage as directed by a signal from a controller. This signal is typically generated by a control system that monitors and adjusts the process variables to maintain the desired conditions such as pressure, temperature, level, or flow rate.

How Control Valve Positioner Works:

Control valve positioners play a crucial role in ensuring the accurate positioning of the valve plug in response to the control signal. Essentially, a positioner receives the output signal from the controller and compares it to the actual position of the valve. If there’s a disparity between the desired and actual positions, the positioner adjusts the pneumatic or hydraulic actuator to correct the valve position accordingly. This feedback loop ensures precise control over the flow rate, enhancing the overall efficiency and reliability of the process.

Control valve types:

• Threeway control valve
• Cage type control valve
• Double seat control valve
• O type shutoff control valve
• Single Seat control valve
• Water Control valve
• Globe Control valve
• Angle type control valve

The three main components of a control valve are:

• Valve Body: Structural housing for flow passage, impacting performance and durability.
• Actuator: Converts control signals to mechanical motion, adjusting valve plug or disc for flow regulation.
• Valve Trim: Components like plug and seat directly interact with fluid flow, controlling characteristics for process efficiency.

Uses of Control Valve:

Control valve manufacturers in Germany play a crucial role in multiple industries, ensuring precise fluid or gas flow control for optimal operational efficiency and safety. They are extensively utilized across various sectors where maintaining precise control is vital for operational effectiveness and safety measures.Some common applications include:

• Oil and Gas
• Chemical Processing
• Power Generation
• Water and Wastewater Treatment

Control Valve Characteristics:

The performance of a control valve is characterized by several key parameters, including:

• Flow Capacity: Maximum flow rate handled, influenced by valve size, design, and pressure drop.
• Rangeability: Ratio of maximum to minimum controllable flow, indicating operating range and control precision.
• Response Time: Speed of valve adjustment to control signal changes, enhancing process control dynamics.
• Leakage: Unintended fluid or gas passage when valve is closed, critical for process integrity and product protection.

Description:

Available Materials: Ductile Iron Control Valve, Cast iron Control Valve(WCB, WCC, WC6)  LCC, LCB, Stainless Steel (SS316, SS304),  Super Duplex (F51, F53, F55)

Class: 150 to 2500

Nominal Pressure: PN10 to PN450

Medium: Air, Water, Chemical, Steam, Oil

Operations: Electric actuated and Pneumatic actuated

Size: 1/2”- 24”

Ends: Flanged, butt weld, socket weld, threaded

Electric actuator details:

Torque – 3 – 9 nm

Operating pressure- 8 Bar

Port Connection-NPT1.4”

Mounting Base-ISO5211

Temperature–20°C – +80°C

Configuration of a Pneumatic Actuator:

4-20 amp

Pneumatic single acting actuators

Pneumatic double acting actuators

Pneumatic rotary actuators

Pneumatic Scotch and Yoke actuators

Pressure: 228 bar

Temperature:

Standard -4°F to 200°F (-20°C to 93°C)

Low -40°F to 176°F (-40°C to 80°C)

High 0°F to 300°F (-18°C to 149°C)