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Help CenterGB/T3036 Gear Operated Butterfly Valve With Mill Test Report and 2-Year Warranty
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As a professional manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing reliable and high-performance industrial valve solutions. Our GB/T3036 Gear Operated Butterfly Valve is engineered for durability and precise flow control in demanding applications. With an annual export value of US$1-1.5 million, we serve a global clientele across five continents, ensuring our products meet international expectations for quality and service. This valve is backed by our ISO9001-certified quality management system, a comprehensive 2-year warranty, and full traceability via a Mill Test Report, offering you peace of mind and long-term operational savings.
Our gear-operated butterfly valve is designed for superior performance and ease of maintenance. Here are its key features and benefits:
- Robust Gear Operator: The enclosed gearbox provides high mechanical advantage, allowing for smooth and effortless operation even under high differential pressures, reducing operator fatigue and enabling precise throttling control.
- Durable Construction: The valve body is crafted from high-grade ductile iron, offering excellent strength and corrosion resistance. The disc and stem are made from stainless steel, ensuring longevity and reliable performance in various media.
- Versatile Sealing Options: Standard seating with NBR (Nitrile Rubber) provides a tight seal for water, oil, and gas services. Optional EPDM or Viton seats are available for specific chemical or high-temperature applications, enhancing the valve's adaptability.
- Reliable Sealing Mechanism: The eccentric disc design minimizes wear on the seat during operation, ensuring a longer service life and maintaining bubble-tight shut-off over many cycles.
- Easy Installation & Maintenance: Available in wafer and lug designs (flanged upon request), the valve simplifies piping system integration. The gear operator can be easily accessed for lubrication or adjustment without removing the valve from the line.
Below is a summary of the primary technical specifications for our standard valve series:
| Parameter | Specification |
|---|---|
| Design Standard | GB/T3036 |
| Operation Type | Gear Operated (Enclosed Worm Gear) |
| Body Material | Ductile Iron (GGG-40) |
| Disc Material | Stainless Steel (CF8/304) |
| Stem Material | Stainless Steel (2Cr13) |
| Seat Material (Standard) | NBR (Nitrile Rubber) |
| Connection Type | Wafer, Lug (Flanged Optional) |
| Pressure Rating (PN) | PN10, PN16 |
| Temperature Range | -10°C to +120°C (with NBR seat) |
| Size Range (DN) | DN50 (2") to DN600 (24") |
| Face-to-Face Dimension | Per GB/T3036 Standard |
The advantages of choosing our valve translate directly into benefits for your operation:
- Cost-Effective Solution: The gear operator eliminates the need for expensive actuators in many manual applications, while the valve's durable design reduces replacement frequency and maintenance costs.
- Enhanced Safety & Control: The gearbox provides a lockable position, preventing unauthorized operation. The precise gearing allows for fine flow adjustment, improving process control.
- Global Compliance: Manufactured to the GB/T3036 standard, which is widely recognized and accepted in international markets, facilitating project approvals and system integration.
- Full Traceability: Each valve is supplied with a Mill Test Report (MTR), documenting material chemical composition and mechanical properties, ensuring quality and compliance with your project specifications.
Shanghai Zhibang Valve has built a strong reputation by exporting to diverse markets including North America, Europe, Southeast Asia, and Africa. Our ISO9001 certification is a testament to our consistent manufacturing processes and commitment to quality. The 2-year warranty on this gear-operated butterfly valve underscores our confidence in its reliability. Combined with the transparency provided by the Mill Test Report, you are investing in a product backed by solid corporate accountability and proven global performance. Contact us today to discuss how this valve can enhance the efficiency and reliability of your fluid handling systems.
Frequently Asked Questions (FAQ)
Q1: What is the main advantage of a gear-operated butterfly valve over a lever-operated one?
A: A gear operator provides a significant mechanical advantage, making it much easier to open, close, or throttle the valve, especially in larger sizes or under higher pressure conditions. It allows for precise flow control and reduces operator effort.
Q2: Does the GB/T3036 standard differ significantly from other international standards like API 609 or ISO 5752?
A: The GB/T3036 standard is a Chinese national standard for metal-seated butterfly valves. While dimensional and pressure ratings are generally aligned with common international practices, specific tolerances and testing requirements may vary. It is widely accepted in many global projects. Full specifications are available upon request for comparison.
Q3: What media is the standard NBR seat suitable for?
A: The standard Nitrile (NBR) rubber seat is suitable for a wide range of media including water, air, oil, and natural gas at temperatures within the specified range. For aggressive chemicals, high temperatures, or specific fluids, we recommend discussing optional seat materials like EPDM or Viton.
Q4: Is the gearbox sealed and maintenance-free?
A: The enclosed gearbox is designed to be robust and protect internal components. It is pre-lubricated but features grease fittings for periodic re-lubrication to ensure smooth operation over its long service life, especially in harsh environments.
Q5: What is included in the Mill Test Report (MTR)?
A: The Mill Test Report provides traceability for the primary metallic components (body, disc, stem). It typically includes the heat number, chemical analysis, and mechanical properties (tensile strength, yield strength, elongation) as per the material grade, verifying compliance with specified standards.
Q6: Can this valve be automated in the future if needed?
A: Yes, the gear operator on this butterfly valve is designed to be compatible with various electric or pneumatic actuators. The gearbox can be easily fitted with a mounting interface for an actuator, allowing for future automation upgrades without replacing the entire valve.
Q7: What are the available port options for shipment?
A: We ship from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing. This flexibility allows us to optimize logistics and provide efficient shipping solutions to our global customers.
Q8: What does the 2-year warranty cover?
A: Our warranty covers defects in materials and workmanship under normal use and service conditions for a period of two years from the date of shipment. It includes repair or replacement of the defective valve. Specific warranty terms and conditions are provided with the commercial documentation.
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