How To Choose A Control Valve

Selecting the right control valve for your system is crucial for ensuring optimal performance, efficiency, and long-term reliability. FLOWX control valves are known for their precision and adaptability, making them an excellent choice for various industrial applications. Here are some key factors to consider when selecting a FLOWX control valve.

1. Understand Your System Requirements

Before choosing a FLOWX control valve, it's important to understand the specific requirements of your system, including:

• Flow Rate: Determine the required flow rate for your application. FLOWX offers a variety of valve sizes, each designed to handle different flow rates.

• Pressure Rating: The pressure your system operates at will influence your valve choice. FLOWX valves come with different pressure ratings, ensuring compatibility with your system's specifications.

• Temperature Range: Temperature plays a critical role in valve performance. Be sure to select a FLOWX control valve that is designed to withstand the temperatures typical in your application.

Single-seat plunger regulating valve ● Advantages

1. Equipped with PSL intelligent straightstroke electric actuator, small size, full specifications, light weight, large thrust, easy operation, no adjustment potentiometer, high reliability, low noise.

2. PSL electric actuator adopts integrated structural design, has selfdiagnosis function, and is very convenient to use and adjust. There is a digital display window, you can see the control signal value and valve position value.

3. It adopts top guide and singleseat sealing structure. Compared with other similar regulating valves, it has outstanding advantages such as simple structure, large rated flow coefficient, and small valve seat leakage.

4. With soft sealing structure, it has both regulating function and cutting function, and is a regulating and cutting type regulating valve.

Concentrated water regulating ball valve ● Advantages

1. Small size, light weight, good high pressure resistance;

2. It has a wide range of applications in special water treatment fields such as landfill leachate treatment and seawater desalination.

3. With the help of advanced CAE simulation and complete full-condition testing, the reliable and optimized structure is further ensured on the basis of meeting the control and adjustment requirements.

4. Made of high-quality duplex stainless steel CNC machining and assembly. Compact structure, flexible installation forms.

Three-way flow separation (combination) control valve ● Advantages

1. The valve core structure adopts a cylindrical thin-walled window, which is guided on the side, has good stability, is not easy to vibrate, has low noise, and allows a large pressure difference.

2. When the nominal diameter and pressure difference are small, the converging valve can be used for diversion occasions; when the nominal diameter is greater than 80mm and the pressure difference is large, it cannot be used interchangeably.

The effect of the fluid on the valve core is in the flow open state, so the valve can work stably.

3. In addition to the guide sleeve at the upper valve cover facing outward, the side of the valve core and the surface of the valve seat also have a guiding effect, with a large guiding area and reliable operation.

4. The actuator adopts a multi-spring structure, which is equivalent to a traditional valve with a height reduction of 30% and a weight reduction of 30%. It is widely used in precise control of gas, liquid and other media.

Pneumatic diaphragm regulating valve ● Advantages

1. Except for the explosion-proof junction box, the shell cover can be opened for adjustment and maintenance on site in hazardous areas.

2. The regulating valve is usually divided into two types: straight-through single-seat regulating valve and straight-through double-seat regulating valve. The latter has the characteristics of large flow capacity, small imbalance and stable operation. Therefore, it is usually used in occasions with large flow, high pressure drop and less leakage.

3. Compact structure, precise and reliable The parts of this product are precisely die-cast, the appearance and internal structure are made with exquisite craftsmanship, and each mechanism is optimized and combined. The whole machine has a compact structure, stainless steel fasteners and advanced injection molding process, and the production and manufacturing marks are permanent. It has good anti-corrosion performance and is used in petroleum, chemical industry, metallurgy, water conservancy, pharmaceutical and other fields.

Self-operated pressure regulating valve ● Advantages

1. Compared with manual regulating valve, the advantage of self-operated regulating valve is that it can be adjusted automatically; compared with electric regulating valve, its advantage is that it does not require external power.

2. In closed water circulation system (such as hot water heating system, air conditioning chilled water system), the correct use of this valve can easily realize the flow distribution and dynamic balance of the system, simplify the debugging of the system, and stabilize the working state of the pump.

3. The pressure segment range is fine and intersecting, and the adjustment accuracy is high.

4. For the pressure regulation after the valve, the ratio of the pressure before and after the valve can be 10:1~10:8.

2. Consider the Type of Fluid

The type of fluid being controlled is another key factor when choosing a FLOWX control valve. Whether you're dealing with water, gas, steam, or chemicals, FLOWX valves are designed to handle a wide range of fluids. Consider the following:

• Viscosity: High-viscosity fluids may require special valve designs to avoid clogging or excessive wear.

• Corrosive or Hazardous Fluids: If you're working with corrosive fluids, FLOWX offers valves with materials and coatings designed to resist corrosion, ensuring long-term durability.

3. Valve Sizing and Flow Coefficients

Proper valve sizing is critical to ensure accurate control and minimize energy loss. FLOWX valves are equipped with standardized flow coefficients (Cv values) that help you choose the right valve size for your system. Make sure to match the Cv value of the valve with the flow requirements of your application.

4. Actuation Method

FLOWX control valves offer a variety of actuation options, including:

• Pneumatic Actuators: Ideal for applications requiring fast, reliable operation.

• Electric Actuators: Suitable for applications with electronic control systems.

• Hydraulic Actuators: Often used in high-force applications.

Consider the power source available in your facility and the required response time when choosing your actuator type.

5. Material Selection

FLOWX offers control valves made from high-quality materials designed to withstand the stresses of industrial environments. Depending on your application, consider factors such as:

• Corrosion Resistance: For aggressive fluids, choose materials such as stainless steel or alloys designed to resist corrosion.

• Strength and Durability: Ensure that the materials used in the valve construction can handle the pressures and temperatures in your system.

6. Control and Feedback Features

If your system requires precise control, consider the control and feedback options available with FLOWX control valves. Many FLOWX models come with built-in sensors that provide real-time feedback on valve position and flow conditions. This helps ensure accurate control and allows for system monitoring and adjustment.

7. Maintenance and Support

FLOWX control valves are designed for easy maintenance, but it’s important to consider the availability of spare parts and after-sales support. Choose a supplier that offers comprehensive support and service to ensure the longevity and optimal performance of your control valves.

8. Consult with Experts

Selecting the right control valve can be complex, and the wrong choice can lead to performance issues and additional costs. It's always a good idea to consult with experts who can guide you through the selection process and help you make an informed decision based on your specific application needs.

Conclusion

Choosing the right FLOWX control valve is essential for achieving optimal system performance and reliability. By carefully considering your system’s flow rate, pressure, temperature, fluid type, actuator options, and material requirements, you can ensure that you select the best valve for your needs. If you have any questions or need assistance with your valve selection, don’t hesitate to contact us—our team of experts is here to help!