Tech Theory: Technical…Practical… Interesting Automation Industrial Solutions
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.
What is a Wafer Butterfly Valve?
Wafer butterfly valves are indispensable flow control devices in industrial and building services, thanks to their compact and lightweight design along with excellent flow regulation capabilities. Whether in water treatment, HVAC systems, or chemical processing, wafer butterfly valves demonstrate outstanding efficiency and reliability. This article will explore the definition, main components, working principles, and advantages of wafer butterfly valves in various applications, providing you with a comprehensive understanding of this essential valve type.
Table of contents
- What is a Wafer Butterfly Valve?
- Definition of Wafer Butterfly Valve
- Main Components and Construction
- Working Principle and Flow Control
- Advantages and Applications of Wafer Butterfly Valves
- Conclusion
- Why more and more international valve brands choose DELCO for OEM service?
- How to get a quick quote for industrial valves?
What is a Wafer Butterfly Valve?
A wafer butterfly valve is a versatile flow control device commonly used in industrial processing lines and building services. Its compact, lightweight design and excellent sealing performance make it an ideal choice for throttling and on/off applications, particularly in pipe systems with space constraints.
Definition of Wafer Butterfly Valve
The butterfly valve consists of a metal disc that pivots to control the passage of fluid through the pipeline. In the open position, the disc rotates parallel to the fluid flow, allowing unobstructed passage. When closed, the disc presses against the valve body to create an elastic seal. Its simple construction makes it suitable for high-cycling, non-critical low-pressure applications.
Main Components and Construction
A wafer butterfly valve primarily consists of two components: the valve body and the disc.
Valve Body: Made from a single cast, the inner surface is raised to provide a seal for the disc in the closed position. Common materials include ductile iron, aluminum bronze, stainless steel, or engineering plastics.
Disc: The contoured metal disc serves as the flow control element and may have a stainless steel edge to enhance sealing performance and extend service life. An axis passes through the centerline of the disc, using bushings or bearings on either side. The axis connects to an actuator, allowing manual, pneumatic, hydraulic, or automatic operation to rotate the disc open or closed.
An elastic liner seals the disc’s edge against the valve seat. Materials such as EPDM, NBR, and PTFE enable a tight seal while allowing the metal disc to slide smoothly. The liner can also cover the disc surface to achieve a soft seal in bidirectional dead-end applications.
Working Principle and Flow Control
During operation, the rotating disc of the butterfly valve cuts across the entire cross-section of the pipeline flow. When fully open, the fluid flows along the slim edge of the disc, resulting in minimal pressure drop. Gradually closing the valve restricts the flow area, increases internal pressure, and provides precise throttling capability.
The contoured disc produces an eccentric rotational motion. As the disc approaches the closed position, its leading edge first contacts the valve seat. This forms a sealing line across the disc span, effectively shutting off the flow. The ductile iron wafer butterfly valve disc maintains contact with the seat even under increased pressure, preventing leakage.
Advantages and Applications of Wafer Butterfly Valves
Wafer butterfly valves offer several advantages:
- Compact and lightweight design for inline installation
- Low torque requirements for rotation
- High-capacity flow regulation
- Tight sealing and complete isolation
- Quick operation for open and close
- No need for bolted connections, simplifying maintenance
These features make wafer butterfly valves an ideal choice for non-critical industrial applications, such as:
- Water and wastewater treatment
- HVAC and large building systems
- General chemical processing
- Water supply and irrigation networks
- Mine dewatering
- Agricultural operations
- Pulp and paper production
Conclusion
Wafer butterfly valves feature a simplified two-piece design that provides various throttling and on/off functions. Their straightforward structure and small footprint make them suitable for cramped installation spaces in processing industries.
With expertise in selecting the best materials and designs, DELCO valves provide durable wafer butterfly valves for maximum productivity and reliability. Please contact us to discuss wafer valve solutions that fit your application needs.
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 [email protected].
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.
