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Help CenterGB/T3036 Ductile Iron Butterfly Valve for HVAC and Building Service Piping Systems
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As a professional manufacturer with a strong commitment to quality and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our GB/T 3036 Ductile Iron Butterfly Valve. Engineered specifically for the demanding environments of HVAC (Heating, Ventilation, and Air Conditioning) and building service piping systems, this valve represents a perfect blend of robust construction, efficient operation, and long-term durability. Since our establishment in 2016, we have focused on delivering piping solutions that meet the precise needs of our global clientele across diverse markets. This butterfly valve is a testament to our expertise, designed to ensure reliable flow control, minimize maintenance downtime, and provide excellent value over its extended service life in commercial and institutional buildings.
This valve is constructed to perform reliably in systems regulating water, air, and other non-aggressive media. Its design prioritizes ease of operation, tight shut-off, and compatibility with modern building automation systems when paired with appropriate actuators.
- Superior Material and Construction: The valve body and disc are manufactured from high-grade ductile iron, known for its excellent strength, toughness, and corrosion resistance compared to standard cast iron. This material choice ensures the valve can withstand the pressure fluctuations and mechanical stresses common in HVAC systems.
- Precise Standard Compliance: Manufactured in strict accordance with the GB/T 3036 standard, this valve guarantees dimensional accuracy, performance consistency, and interchangeability, providing peace of mind for engineers and contractors during specification and installation.
- Versatile Sealing Options: We offer a selection of seat materials to suit various service conditions. Common options include EPDM for hot water, NBR for general purposes, and PTFE for higher temperature or more corrosive media. The seat is securely bonded or mechanically retained to ensure a bubble-tight seal.
- Optimized Disc Design: The disc is aerodynamically shaped to minimize flow turbulence and pressure drop across the valve, contributing to energy efficiency in pumping systems. Its offset stem design reduces wear on the seat and allows for smooth 90-degree operation from fully open to fully closed.
- Multiple Operation Methods: To suit different application requirements and levels of automation, the valve can be supplied with a simple locking lever for manual operation, a gear operator for easier handling of larger sizes, or prepared for the direct mounting of pneumatic or electric actuators.
- Robust Stem Design: The stem is made from stainless steel, providing high tensile strength and corrosion resistance. It is fully isolated from the media, preventing seizure and ensuring smooth, reliable operation over thousands of cycles.
- Compact and Lightweight: The wafer-style design (with lug style optional) allows for installation between ANSI or DIN flanges without the need for nuts on both sides, saving space and reducing overall weight and installation time compared to gate or globe valves.
Key technical specifications for standard configurations are summarized in the table below. Please note that many parameters are customizable based on your project requirements.
| Parameter | Specification / Option |
|---|---|
| Body & Disc Material | Ductile Iron |
| Stem Material | Stainless Steel |
| Seat Material | EPDM, NBR, PTFE (Standard options) |
| Design Standard | GB/T 3036 |
| Connection Type | Wafer (Standard), Lug (Optional) |
| Face-to-Face Dimension | Per GB/T 3036 / ANSI Short Pattern |
| Pressure Rating | PN10, PN16, or Class 125/150 (Available) |
| Temperature Range | Dependent on seat material (e.g., EPDM: -20°C to 120°C) |
| Operation | Lever, Gear, or Actuator-ready |
The advantages of choosing our Ductile Iron Butterfly Valve translate directly into tangible benefits for your projects:
- Enhanced System Reliability: The robust ductile iron construction reduces the risk of failure under water hammer or thermal stress, leading to fewer callbacks and lower lifecycle costs.
- Simplified Installation & Maintenance: The compact wafer design and lightweight body simplify handling and installation between existing flanges, reducing labor time. The simple design also allows for easy inline maintenance if required.
- Operational Efficiency: Low torque operation, especially when paired with a gearbox or actuator, ensures easy control. The low-pressure drop design helps in reducing pumping energy costs.
- Long Service Life: The combination of corrosion-resistant materials, a protected stem, and a durable seat ensures a long operational life with minimal degradation, even in cyclic duty applications common in HVAC.
- Design Flexibility: With multiple end connection, operation, and sealing material options, this valve can be tailored to fit a wide range of specific application requirements within building services.
Shanghai Zhibang Valve backs this product with the solid foundation of a certified manufacturing process. Our operations are governed by an ISO9001 Quality Management System, ensuring every valve that leaves our facility meets consistent, high-quality standards. This commitment to quality is reflected in our growing global presence, with products successfully exported to markets including North America, South America, Europe, Southeast Asia, Africa, and Oceania, amounting to an annual export value in the range of US$1-1.5 million. We support this reach with flexible logistics, offering shipment from major ports like Shanghai, Guangzhou, and Hong Kong. When you choose our GB/T 3036 Ductile Iron Butterfly Valve, you are not just purchasing a component; you are investing in a reliable solution supported by a manufacturer dedicated to precision, durability, and customer satisfaction. Contact us today to discuss your specifications, request a quote, or learn more about how this valve can enhance your next HVAC or building service project.
Frequently Asked Questions (FAQ)
Q1: What is the main advantage of using ductile iron over gray cast iron for this butterfly valve?
A1: Ductile iron offers significantly higher tensile strength and impact resistance (toughness) compared to gray cast iron. This makes the valve more resistant to shock loads like water hammer and mechanical stress, which is crucial for the long-term reliability of HVAC systems.
Q2: Can this valve be used for both chilled water and hot water systems in a building?
A2: Yes, it is suitable for both. The key factor is selecting the appropriate seat material. For instance, EPDM seats are commonly used for hot water applications up to 120°C, while NBR is often specified for chilled water. We can advise on the best material for your specific temperature and media.
Q3: What is the difference between wafer and lug style connections, and which should I choose?
A3: A wafer-style valve is installed between two flanges using longer bolts that pass through both flanges. A lug-style valve has threaded inserts (lugs) on the valve body, allowing it to be bolted directly to each flange independently, which can be beneficial for end-of-line service or system segment removal. Wafer style is more common for in-line applications.
Q4: Is this valve compatible with building management systems (BMS) for automated control?
A4: Absolutely. The valve can be supplied as an actuator-ready model. We can provide or recommend compatible electric or pneumatic actuators that integrate seamlessly with BMS for automated temperature, pressure, or flow control.
Q5: Do you provide valves with different pressure ratings like PN16 or Class 150?
A5: Yes. While the standard offering complies with GB/T 3036, we can manufacture valves to meet common pressure ratings such as PN10, PN16, ANSI Class 125, or Class 150. Please specify your required pressure class during inquiry.
Q6: What kind of maintenance does this butterfly valve require?
A6: The design requires minimal maintenance. Periodic visual inspection and occasional operation to prevent seizing are typically sufficient. The stem is isolated, and the seat is resilient, so routine lubrication or adjustment is generally not needed under normal service conditions.
Q7: Can you provide customized valves for non-standard sizes or special coatings?
A7: As a manufacturer, we have the capability to discuss customizations. This includes non-standard sizes, special epoxy coatings for enhanced corrosion protection, or other specific requirements. Please contact us with your detailed needs for evaluation.
Q8: What documentation accompanies the valves upon shipment?
A8: Standard shipments include a commercial invoice, packing list, and a material certificate/test report for the valve. Additional documentation like a full inspection report or specific certificates can be arranged upon request.
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