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Help CenterDuctile Iron Wafer Butterfly Valve Compliant With GB/T3036, EPDM Seat, Lever or Gear Operation
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As a leading manufacturer with a strong commitment to quality and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Ductile Iron Wafer Butterfly Valve. Engineered for superior performance and durability, this valve is designed to meet the rigorous demands of industrial fluid control systems across the globe. Our years of expertise, backed by a robust ISO9001 quality management system, ensure every valve delivers consistent, leak-free operation. We understand the critical need for dependable components in your operations, which is why our butterfly valve is crafted to offer an optimal balance of strength, longevity, and cost-effectiveness. Whether for new installations or maintenance replacements, this valve provides a trusted solution for managing flow in a wide range of applications.
This valve is constructed with a robust ductile iron body, providing excellent tensile strength and impact resistance compared to standard cast iron. The key features and specifications that set our product apart include:
- Superior Sealing Performance: The valve utilizes a resilient EPDM (Ethylene Propylene Diene Monomer) seat, which ensures a bubble-tight seal and offers excellent resistance to water, air, mild chemicals, and weathering. This material choice guarantees long service life and minimal maintenance.
- Durable Construction: The disc is made from ductile iron and typically coated with a protective epoxy layer to prevent corrosion and resist abrasion from media flow. The stem is manufactured from stainless steel (2Cr13 or equivalent), providing high torsional strength and corrosion resistance.
- Flexible Operation: Available with either a simple lever handle for quick, manual quarter-turn operation or an optional gearbox for applications requiring higher torque or remote operation. This flexibility allows for easy integration into various control schemes.
- Compact & Lightweight Wafer Design: The wafer-style body fits snugly between two pipe flanges, held in place by the flange bolts. This design saves significant space and weight compared to lug-style valves, making installation easier and more economical.
- Wide Application Range: Suitable for on/off and throttling services in systems handling water, air, oil, gas, and other non-aggressive media. Commonly used in water treatment, HVAC, power generation, chemical processing, and general industrial piping.
The following table outlines key technical specifications for standard configurations:
| Parameter | Specification / Value |
|---|---|
| Design Standard | Compliant with GB/T 3036 |
| Pressure Rating | PN10, PN16 (Class 150 typical) |
| Temperature Range (with EPDM) | -20°C to +120°C |
| Body & Disc Material | Ductile Iron (Epoxy Coated) |
| Stem Material | Stainless Steel 2Cr13 |
| Seat Material | EPDM Rubber |
| Operation | Lever Handle (Standard), Gear Operator (Optional) |
| Flow Direction | Bi-directional |
Choosing our Ductile Iron Wafer Butterfly Valve brings several tangible benefits to your project. The wafer design reduces overall weight and cost while simplifying installation between existing flanges. The ductile iron body offers enhanced mechanical properties, reducing the risk of fracture under pressure or water hammer conditions. The EPDM seat provides reliable sealing and is suitable for a broad spectrum of media, minimizing the need for multiple valve types in your inventory. The option for gear operation allows for precise flow control in systems where a lever may be impractical. Overall, this valve represents a robust and versatile component that contributes to system reliability and lower total cost of ownership.
Shanghai Zhibang Valve Manufacture Co., Ltd. has built a solid reputation since 2016, supported by an annual export value ranging from US$1 to 1.5 million, demonstrating our global reach and customer trust. Our products are accepted in diverse markets across North and South America, Europe, Asia, Africa, and Oceania. We hold the ISO9001 certification, which underscores our systematic approach to quality control throughout the manufacturing process. With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure efficient and flexible logistics to meet your delivery timelines. When you select our butterfly valve, you are not just buying a product; you are partnering with an experienced manufacturer dedicated to providing reliable fluid control solutions. Contact us today to discuss your requirements or to request a quotation.
Frequently Asked Questions (FAQ)
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What is the main advantage of using ductile iron over cast iron for the valve body?
Ductile iron, also known as nodular iron, has superior mechanical properties. It offers higher tensile strength, better impact resistance, and greater elongation than standard cast iron. This makes the valve more durable and less prone to cracking under pressure surges or physical shock. -
Is this valve suitable for throttling (flow control) applications?
Yes, this butterfly valve can be used for moderate throttling services. However, for precise control over a wide range, especially with the lever operation, it is primarily designed for on/off service. The optional gear operator provides finer control for throttling applications. -
Can the seat material be changed for different media?
Yes. While EPDM is standard and suitable for many applications, other elastomer seat materials like NBR (Nitrile) or Viton® (FKM) may be available upon request to handle specific chemicals, oils, or higher temperatures. -
What does "wafer type" mean, and how is it installed?
A wafer-type valve has a slim body without dedicated flange holes. It is installed by placing it between two pipe flanges. The flange bolts pass through the flanges and the valve's bolt holes, clamping it in place. This design is lighter, more compact, and often more cost-effective than lug-style valves. -
Does compliance with GB/T 3036 make it compatible with international flange standards like ANSI or DIN?
GB/T 3036 is a Chinese national standard for metal butterfly valves. The face-to-face dimensions and pressure ratings are often designed to be compatible with common international standards like ANSI Class 150 or DIN PN10/PN16 for specific sizes. It is advisable to confirm dimensional compatibility for your specific flange standard. -
What is the typical lead time for an order?
Lead times can vary based on order quantity, specification (e.g., gear operator), and current production schedule. Standard configurations may have shorter lead times. Please contact our sales team with your detailed requirements for an accurate delivery estimate. -
Is the epoxy coating on the disc and body standard?
A protective epoxy coating is a common standard finish to enhance corrosion resistance and provide a smooth surface. The specific coating type and thickness can be confirmed based on the intended service environment. -
What kind of maintenance does this valve require?
These valves are designed for low maintenance. Periodic visual inspection for leaks and smooth operation of the lever/gear is recommended. The resilient seat may eventually wear and require replacement after extended service cycles, but the design often allows for in-line seat replacement in many cases.
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