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The NBR Seat Butterfly Valve is a vital component in fluid control systems, known for its precision, durability, and resistance to chemical corrosion. As industries continue to seek efficiency and reliability, understanding how this valve functions, why it is widely used, and what benefits it brings is essential for engineers, suppliers, and end users alike. This article explores the technical parameters, key advantages, and working principles of the NBR Seat Butterfly Valve. Additionally, it introduces Zhejiang Zhongguan Valve Manufacture Co., Ltd., a trusted manufacturer specializing in the production of high-quality valve solutions. Detailed product specifications, professional Q&A, and contact information are included to help potential buyers make informed decisions.
What Is an NBR Seat Butterfly Valve and How Does It Work?
Why Choose an NBR Seat Butterfly Valve for Your Fluid System?
What Are the Main Technical Parameters and Applications?
FAQ: Common Questions About NBR Seat Butterfly Valve
About Zhejiang Zhongguan Valve Manufacture Co., Ltd.
Contact Us
An NBR Seat Butterfly Valve is a quarter-turn rotational valve designed to regulate or isolate the flow of liquids and gases. The valve consists of a circular disc mounted on a rotating shaft. When the disc is turned parallel to the flow, the valve allows fluid to pass through; when perpendicular, it blocks the flow.
The "NBR" in its name stands for Nitrile Butadiene Rubber, a material known for its superior resistance to oil, abrasion, and certain chemicals. This makes it ideal for applications in water treatment, chemical processing, oil pipelines, and HVAC systems.
The NBR seat provides a tight seal between the disc and the valve body, ensuring zero leakage even under high pressure. This combination of functionality and resilience makes it one of the most reliable valve types in industrial use.
Body – Made of cast iron, ductile iron, or stainless steel for structural strength.
Disc – The main flow control element, commonly made from stainless steel or coated aluminum bronze.
Seat (NBR) – Ensures leak-free sealing and resists oil and chemical exposure.
Shaft/Stem – Connects the disc to the actuator or handle for easy operation.
Actuator – Can be manual, pneumatic, or electric, depending on operational requirements.
Selecting the right valve can dramatically influence operational efficiency and system safety. The NBR Seat Butterfly Valve offers several advantages that make it a preferred choice across industries.
Superior Sealing – NBR rubber ensures an airtight seal, preventing fluid leakage even under high vibration or fluctuating pressure.
Corrosion Resistance – Suitable for a wide range of fluids, including water, oil, and light chemicals.
Low Torque Operation – Easy to open and close, reducing actuator load and energy consumption.
Compact Design – Space-saving construction makes installation simple even in tight areas.
Cost Efficiency – Compared to other valve types, it offers long service life with minimal maintenance.
| Parameter | Specification |
|---|---|
| Size Range | DN50 – DN1200 |
| Body Material | Cast Iron / Ductile Iron / Stainless Steel |
| Seat Material | NBR (Nitrile Butadiene Rubber) |
| Disc Material | Stainless Steel / Ductile Iron / Aluminum Bronze |
| Working Pressure | PN10 / PN16 |
| Working Temperature | -10°C to +90°C |
| Connection Type | Wafer / Lug / Flanged |
| Operation | Manual, Electric, or Pneumatic |
| Leakage Test | 100% Tight Shutoff |
| Applicable Medium | Water, Oil, Gas, Light Chemicals |
The NBR Seat Butterfly Valve is designed for versatile use in different industries that demand precision, control, and safety in their flow systems.
Water Treatment Plants – For regulating clean and wastewater flow.
Oil and Gas Pipelines – Resistant to oil-based media.
HVAC Systems – Efficient flow control of chilled or hot water.
Chemical Plants – Handles non-corrosive chemical fluids.
Food & Beverage Industry – Used in water lines and cleaning systems.
| Feature | NBR Seat Butterfly Valve | EPDM Seat Butterfly Valve |
|---|---|---|
| Oil Resistance | Excellent | Poor |
| Temperature Range | -10°C to +90°C | -20°C to +120°C |
| Chemical Compatibility | Moderate | Excellent |
| Durability | High | Moderate |
| Sealing Performance | Excellent | Good |
The NBR Seat Butterfly Valve stands out for its oil and abrasion resistance. While EPDM valves are better for chemical resistance, NBR provides an unbeatable balance for oil-based and general-purpose applications, particularly where leak-free operation and durability are top priorities.
Q1: What makes the NBR Seat Butterfly Valve different from other valves?
A1: Its NBR rubber seat offers excellent sealing performance and oil resistance, ensuring zero leakage and long life.
Q2: Can it be used for both water and oil applications?
A2: Yes, it performs well in both water and oil systems due to its durable NBR material.
Q3: What temperature range can it handle?
A3: The valve operates efficiently between -10°C and +90°C, ideal for most industrial applications.
Q4: Is maintenance complicated?
A4: No, it requires minimal maintenance thanks to its simple structure and replaceable seat design.
Q5: Can the NBR seat be replaced?
A5: Yes, the seat can be easily replaced, which reduces downtime and maintenance costs.
Q6: Does it support automation?
A6: Absolutely. It can be equipped with electric or pneumatic actuators for automated control systems.
Q7: What is the typical lifespan of the NBR seat?
A7: Under normal conditions, the seat can last for several years without degradation.
Q8: Is it suitable for corrosive fluids?
A8: It is suitable for mild chemical fluids but not recommended for highly acidic or corrosive media.
Q9: How does it ensure leak-free performance?
A9: The NBR seat provides an elastic yet firm seal that conforms tightly to the disc edge under pressure.
Q10: Where can I purchase high-quality NBR Seat Butterfly Valves?
A10: You can obtain reliable and certified valves directly from Zhejiang Zhongguan Valve Manufacture Co., Ltd., a professional manufacturer with proven expertise in valve technology.
Zhejiang Zhongguan Valve Manufacture Co., Ltd. is a professional enterprise specializing in the research, production, and sales of industrial valves. With decades of experience and advanced manufacturing facilities, the company has earned a reputation for producing valves that combine innovation, precision, and durability.
Their product portfolio includes butterfly valves, gate valves, check valves, and globe valves, all conforming to international standards such as ISO, API, and CE. The company focuses on providing customized valve solutions tailored to various industries, including water supply, power plants, petrochemicals, and environmental engineering.
Over 20 years of manufacturing experience
ISO-certified quality management system
Professional R&D and testing laboratories
Global supply network covering Europe, Southeast Asia, and the Middle East
Fast delivery and reliable after-sales service
The NBR Seat Butterfly Valve is one of Zhongguan's flagship products, combining precision engineering with robust materials to deliver outstanding performance in every environment.
For more information about NBR Seat Butterfly Valve, product customization, or bulk orders, please reach out to Zhejiang Zhongguan Valve Manufacture Co., Ltd. Our technical experts are ready to provide tailored solutions and detailed quotations.
Contact Information:
Company: Zhejiang Zhongguan Valve Manufacture Co., Ltd.
Website: www.valveszg.com
Email: info@zhongguanvalve.com
Phone: +86-13682088767
Address: No. 838, Oubei Avenue, Yongjia County, Wenzhou City, Zhejiang Province, China
At Zhejiang Zhongguan Valve Manufacture Co., Ltd., we are dedicated to providing reliable flow control solutions that meet your operational and safety needs. Contact us today to find out how our NBR Seat Butterfly Valve can enhance the performance of your system.
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