Fleyenda Flow Manual Butterfly Valve Wholesale & ODM Service

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Butterfly Valve

Butterfly Valve
Fleyenda Gear Operated Wafer Butterfly Valve

Fleyenda Gear Operated Wafer Butterfly Valve

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2" to 40" Inch 1.6MPa Cast Iron Butterfly Valve

2" to 40" Inch 1.6MPa Cast Iron Butterfly Valve

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Fleyenda Gear Operated Lug Butterfly Valve

Fleyenda Gear Operated Lug Butterfly Valve

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Fleyenda Manual Operated Lug Butterfly Valve

Fleyenda Manual Operated Lug Butterfly Valve

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8

8'' Inch 2MPa SS304 Manual Wafer Butterfly Valve

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Fleyenda EPDM Seated Ductile Iron Wafer Butterfly Valve

Fleyenda EPDM Seated Ductile Iron Wafer Butterfly Valve

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China Plastic Butterfly Valve Manufacturer | Fleyenda Flow

China Plastic Butterfly Valve Manufacturer | Fleyenda Flow

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FLE-WD371J Non Pin Rubber Lined and Nylon Wafer Butterfly Valve

FLE-WD371J Non Pin Rubber Lined and Nylon Wafer Butterfly Valve

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Ductile Iron Body Stainless Steel Disc Wafer Butterfly Valve

Ductile Iron Body Stainless Steel Disc Wafer Butterfly Valve

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18Nm to 12000Nm Wafer Worm Gear Butterfly Valve

18Nm to 12000Nm Wafer Worm Gear Butterfly Valve

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6" Lever Operator Epoxy Coated Cast Iron Wafer Butterfly Valve with SUS Disc

6" Lever Operator Epoxy Coated Cast Iron Wafer Butterfly Valve with SUS Disc

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4" Inch High Performance Wafer All Stainless Steel Butterfly Valve

4" Inch High Performance Wafer All Stainless Steel Butterfly Valve

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SUS Wafer Turbine Hand Operated Butterfly Valve

SUS Wafer Turbine Hand Operated Butterfly Valve

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Fleyenda Manual Marine Center Spiral Butterfly Valve

Fleyenda Manual Marine Center Spiral Butterfly Valve

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12" Inch Wafer Extended Rod butterfly valve

12" Inch Wafer Extended Rod butterfly valve

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Wafer Carbon Steel Butterfly Valve with Handle

Wafer Carbon Steel Butterfly Valve with Handle

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DIN GB DN50 to DN1200 PN25 Flanged PTFE Butterfly Valve

DIN GB DN50 to DN1200 PN25 Flanged PTFE Butterfly Valve

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DN50 to DN1200 ANSI 150LB EPDM Butterfly Valve

DN50 to DN1200 ANSI 150LB EPDM Butterfly Valve

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Stainless Steel Disc Lug Type  4 inch butterfly valve

Stainless Steel Disc Lug Type 4 inch butterfly valve

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Stainless Steel Midline Ventilation Butterfly Valve

Stainless Steel Midline Ventilation Butterfly Valve

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Stainless Steel GB JIS Flange Telescopic Butterfly Valve

Stainless Steel GB JIS Flange Telescopic Butterfly Valve

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Fleyenda Industrial Butterfly Valves Product Show

Fleyenda Industrial Electric Butterfly Valves Product Show Industrial Butterfly Valves Product Show  

1. How do you find a reliable industrial butterfly valve manufacturer in China?

Struggling to find a trusted valve supplier for your industrial projects? The search can be frustrating and risky. Fleyenda Flow combines 20 years of industry experience with proven reliability.

Fleyenda Flow is a leading industrial butterfly valve manufacturer in China, specializing in high-performance valves for demanding applications. With a focus on quality, customized solutions, and expert support, we partner with clients globally to ensure their systems operate safely and efficiently. We are your reliable choice.

Over my 20 years in the industrial field, I've seen countless projects succeed or fail based on component selection. Finding the right partner is not just about price; it is about trust and expertise. This is why I am so proud of what we do at Fleyenda. We are not just suppliers; we are partners in your success. Let us explore butterfly valves together, so you can make the best choice for your next project.

What are the three main types of butterfly valves?  

Choosing the wrong valve type can lead to leaks, system failure, and costly downtime. It is a common problem. Understanding the basic types is the first step to avoiding it.

The three main types of butterfly valves are Rubber-lined, Plastic-lined, and Metal-seated. Each is designed for different applications, temperatures, and pressures, from general water service to highly corrosive or high-temperature environments. Your specific process conditions will determine the best choice.
 

I often speak with engineers like Jacky, who designs complex boiler systems. For him, a small mistake in valve selection can have big consequences. That is why we always start with the basics. It is essential to break down the options clearly. Each valve type has a specific job. Choosing correctly means your system runs smoothly for years. Let's look at each type more closely to see where they fit best.

Understanding the Materials and Applications 

The liner or seat is the most critical part of a butterfly valve. It creates the seal. The material used determines what the valve can handle.

  • Rubber-Lined: These are the most common type. They use resilient elastomers like EPDM or NBR. They are excellent for general-purpose applications like water, wastewater, and air. They provide a tight seal but have temperature and chemical limitations.
  • Plastic-Lined (PTFE/PFA): When you face corrosive media, plastic-lined valves are the answer. Materials like PTFE offer amazing chemical resistance. Fleyenda recommend these to clients in chemical processing or power generation who handle harsh acids or bases.
  • Metal-Seated: For high-temperature or high-pressure applications, you need a metal-seated valve. These are often called triple-offset butterfly valves. They are built for tough jobs, like steam or abrasive media in steel mills or refineries.

Here is a simple table to help:

Valve Type Primary Use Max Temperature (Approx.) Key Feature
Rubber-Lined Water, Air, HVAC ~120°C (250°F) Cost-effective, good seal
Plastic-Lined Corrosive Chemicals ~200°C (392°F) Excellent chemical resistance
Metal-Seated High Temp, High Pressure > 400°C (752°F) Durable, handles severe service

2. When is a butterfly valve a better choice than a ball valve?

Engineers often struggle to decide between a butterfly valve and a ball valve. The wrong choice can impact efficiency and cost. Knowing where each type excels will simplify your decision.

Choose a butterfly valve over a ball valve for large pipelines where cost and weight are major factors. They are also superior for quick shut-off needs, certain corrosive or particle-laden media, low-pressure gas applications, and sanitary systems due to their simple design.
When is a butterfly valve a better choice than a ball valve

I worked with an EPC company on a huge power generation project. They needed dozens of large-diameter valves. The cost and weight savings from using butterfly valves instead of ball valves were enormous. It made the project feasible. Yet, for a different client’s high-pressure gas injection system, a ball valve was the only safe choice. The application always dictates the best valve. This is where experience matters. Let's explore the key scenarios where a butterfly valve is the clear winner.

Making the Right Decision 

The choice between these two quarter-turn valves often comes down to specific application details. Here are the situations where I almost always recommend a butterfly valve.

  1. Large Diameter Pipes: For pipes larger than 2 inches, butterfly valves become significantly cheaper and lighter than ball valves. For a 12-inch pipe, a butterfly valve can be a fraction of the weight and cost of a ball valve.
  2. Quick Shut-Off is Critical: Their simple quarter-turn action makes them ideal for on/off services where speed is important, especially in large-scale water or air systems.
  3. Handling Specific Media:
    • Corrosive or Slurry Media: A lined butterfly valve often provides a more cost-effective solution for handling corrosive fluids or slurries than an expensive, alloy-body ball valve.
    • Sanitary Applications: The simple design with fewer crevices makes certain butterfly valves easier to clean, making them suitable for food, beverage, and pharmaceutical industries.
  4. Low-Pressure or Vacuum Systems: Butterfly valves seal very well in low-pressure and vacuum services, making them a reliable and economical choice for these applications.

Here is a comparison table to summarize the key differences:

Feature Butterfly Valve Ball Valve
Cost (Large Size) Lower Higher
Weight & Size Lighter, more compact Heavier, bulkier
Shut-Off Seal Good (Excellent in some designs) Excellent (Bubble-tight)
Throttling Fair to Good Poor to Fair (Specialty V-port is better)
Pressure Drop Some drop exists Very low drop (full port design)
Best For Large pipes, low cost, quick shut-off High pressure, zero leakage, pipelines that get pigged


Conclusion

Understanding butterfly valve types, their pros, cons, and best applications is crucial. Fleyenda is here to help you select the perfect, reliable valve for your project's specific needs.

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