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At DELCO, we understand the importance of customer satisfaction and strive to meet the unique needs of every client. As a reliable valve supplier, we are committed to providing excellent customer service and high-quality products to ensure optimal performance and longevity. By choosing DELCO as your trusted control air supplier, you can benefit from customized valve assemblies designed specifically to meet your requirements, enhancing efficiency and reducing downtime.

Pneumatic Three-Way Control Valve

In modern industry, the efficiency and safety of fluid control systems are crucial. The pneumatic three-way control valve, as a key automation control device, is widely used for precise regulation of gases, liquids, and steam. This article will detail the construction, working principle, features, and maintenance of pneumatic three-way control valves, providing a reference for industrial applications.

What is a Pneumatic Three-Way Control Valve?

A pneumatic three-way control valve consists of a multi-spring pneumatic diaphragm actuator and a cylindrical thin-walled window valve core. Its design aims to achieve automatic regulation of fluid media in process pipelines, widely applied to ensure that parameters such as pressure, flow rate, temperature, and liquid level remain at set values. This valve can either divide one fluid into two flow paths or combine two fluids into one, making it suitable for various industrial scenarios.

The ZJHF and ZJHH series pneumatic three-way control valves feature an efficient guiding design, with simple structure, light weight, and quick response. They have a nominal pressure range of PN16, 40, and 64, a nominal diameter range of DN25 to 300, and can handle fluid temperatures from -60°C to +450°C, with a leakage standard of Level IV.

Features of Pneumatic Three-Way Control Valves

  • Automation Control: As an actuator in automation control systems, the pneumatic three-way control valve utilizes an electric-pneumatic valve positioner to receive control signals and achieve precise regulation.

  • Action Mode: The valve can be categorized as either direct action (air-closed) or reverse action (air-open) to meet different process requirements.

  • Valve Core Structure: Its cylindrical thin-walled window valve core design ensures good guiding and stability, accommodating various fluid states.

  • Flow and Split Functions: The valve can achieve both three-way merging and splitting functions, catering to different working conditions.

  • Replaceability: The pneumatic three-way control valve can replace two simultaneous two-way control valves, achieving splitting, merging, and proportional regulation functions.

Working Principle of Pneumatic Three-Way Control Valves

The working principle of the pneumatic three-way control valve involves using compressed air as the power source, employing a cylinder as the actuator, and utilizing electric valve positioners and other accessories to achieve either on-off or proportional regulation. The valve adjusts the flow, pressure, and temperature of the pipeline media based on received control signals.

Main Component Materials of Pneumatic Three-Way Control Valves

The main component materials of the pneumatic three-way control valve include the valve body, valve cover, valve core, and valve seat, typically made from corrosion-resistant and high-temperature-resistant materials to ensure the valve’s strength and durability. Additionally, the diaphragm, packing, springs, and other components are made from high-quality materials to ensure sealing performance and sensitivity.

Maintenance and Care for Pneumatic Three-Way Control Valves

  • Define Purpose: The purpose of maintaining the pneumatic three-way control valve is to extend its service life and ensure normal operation.

  • Lubrication: Regularly apply lubricating oil, molybdenum disulfide, or graphite powder to the valve stem threads to reduce friction.

  • Regular Checks: Even valves that are not frequently opened and closed should be periodically turned and lubricated to prevent rust.

  • Protection Measures: Outdoor valves should be equipped with protective covers to prevent rain, snow, and dust from entering.

  • Lubrication Oil Maintenance: If the valve is mechanically actuated, regularly add lubricating oil.

  • Keep Clean: Regularly maintain the cleanliness of the valve to ensure normal operation.

  • Check Integrity: Periodically inspect the integrity of the valve’s components to ensure all parts are functioning properly.

Conclusion

As a vital component of fluid control systems, the pneumatic three-way control valve has achieved significant results across various industrial fields due to its excellent performance and flexibility. Proper maintenance and care can further extend its service life, ensuring efficient operation under various working conditions. Choosing the right pneumatic three-way control valve will help enhance industrial automation levels, ensuring safe and stable production.

Why more and more international valve brands choose DELCO for OEM service?

Founded in 2011, DELCO is a global leader in the industrial sector. Our main products include electric actuator valves, pneumatic actuator valves, automation actuators and solenoid valves. For nearly 20 years, we have utilized our products, engineering expertise and industrial automation solutions to solve countless industrial project problems for our customers, including food, beverage, chemical, water treatment, pharmaceutical, natural gas, oil and HVAC projects. We currently have five subsidiaries and more than 50 distributors around the world providing rapid response service.
All DELCO products undergo a 100% in-house design, engineering and manufacturing process led by highly skilled and experienced engineers using Italian and German technology to manufacture high quality, safe, reliable and value for money valves, actuators and solutions. Manufacturing standards can be demonstrated by the certifications obtained over the years.
And with the ISO 9001:2015 Quality Management System certification as well as many other certifications such as: SGS, RoHS, CNEX, TUV, CE, FDA. these certifications prove that DELCO adheres to the highest quality and safety standards worldwide when manufacturing its products.

How to get a quick quote for industrial valves?

If you have questions about valves or want to get a quote, please feel free to contact us, we will reply within 6 hours. Phone +86 159 8960 2972, WhatsApp +86 159 8960 2972 or email marketing sales@delcofluid.com.
DELCO’s quality, competitive prices and excellent service make it the best valve partner to help you grow your business. Customize your valves, we have no minimum order.

At DELCO, we understand the importance of customer satisfaction and strive to meet the unique needs of every client. As a reliable control valve supplier, we are committed to providing excellent customer service and high-quality products to ensure optimal performance and longevity. By choosing DELCO as your trusted control valve supplier, you can benefit from customized valve assemblies designed specifically to meet your requirements, enhancing efficiency and reducing downtime.

Furthermore, our competitive pricing on electronic pressure regulators enables you to offer top-notch solutions. As one of the leading control valve manufacturers, we take pride in delivering reliable valves that not only meet industry standards but also contribute to the overall profitability of your business. By partnering with DELCO, you can have peace of mind knowing that you are making a wise choice for the long-term success of your company.

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