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Help CenterGB/T3036 Gear Operated Butterfly Valve for Power Plant Cooling Water Systems
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As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing reliable flow control solutions for demanding industrial applications. Our GB/T3036 Gear Operated Butterfly Valve is engineered specifically for the rigorous conditions of power plant cooling water systems, where dependable performance is non-negotiable. With years of expertise since our establishment in 2016, we understand the critical need for valves that offer precise control, minimal maintenance, and long-term durability. This valve represents our commitment to quality, combining robust construction with user-friendly operation to ensure seamless integration and optimal efficiency in your cooling circuits.
This gear-operated butterfly valve is designed to deliver superior performance in large-diameter piping systems common in power generation facilities. Its key features and benefits are detailed below:
- Precise Flow Regulation: The gear operator provides significant mechanical advantage, allowing for smooth and accurate throttling of cooling water flow, which is essential for maintaining optimal thermal efficiency in heat exchangers and condensers.
- Robust & Corrosion-Resistant Construction: Featuring a ductile iron body with a high-quality epoxy coating and a corrosion-resistant disc, the valve is built to withstand the chemical and abrasive nature of treated cooling water, extending service life.
- Bubble-Tight Shut-off: Utilizing advanced seat materials like EPDM or PTFE, the valve ensures reliable, leak-proof sealing even after prolonged cycling, preventing water loss and system pressure drops.
- Low Maintenance Design: The gearbox is sealed and lubricated for life, requiring minimal intervention. The simple, compact wafer or lug design reduces installation space and weight compared to gate valves.
- Enhanced Operational Safety: The gear operator allows for safe, ground-level operation of large valves, eliminating the need for ladders or special tools, thereby improving workplace safety.
The technical specifications for standard models are summarized in the following table. Custom configurations are available upon request to meet specific project requirements.
| Parameter | Specification |
| Design Standard | GB/T3036 |
| Nominal Diameter (DN) | DN50, DN80, DN100, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600, DN700, DN800, DN900, DN1000, DN1200 |
| Pressure Rating (PN) | PN10, PN16 |
| Body Material | Ductile Iron (Standard), Cast Steel WCB, Stainless Steel CF8/CF8M |
| Disc Material | Ductile Iron with Epoxy Coating (Standard), Stainless Steel, Aluminum Bronze |
| Stem Material | Stainless Steel 420/304/316 |
| Seat Material | EPDM (Water, -10°C to 120°C), NBR (Oil, -10°C to 80°C), PTFE (Chemical, -20°C to 200°C), Metal Seat (High Temp) |
| Operation Type | Gear Operator (Manual), Option for Electric or Pneumatic Actuator |
| Connection Type | Wafer (Double Flange), Lug (Single Flange) |
| Leakage Class | ANSI Class VI (Soft Seat), ANSI Class IV (Metal Seat) |
| Temperature Range | Dependent on Seat Material (Standard EPDM: -10°C to 120°C) |
Advantages for Your Power Plant: Implementing our valves translates into tangible benefits for your operation. You gain precise control over cooling water flow rates, leading to improved heat exchange efficiency and potential energy savings. The durability and corrosion resistance reduce unplanned downtime and lower total cost of ownership through fewer replacements. The standardized GB/T3036 design ensures compatibility with existing Chinese and international system specifications, simplifying procurement and installation.
Our products are trusted by clients across the globe, from North America and Western Europe to Southeast Asia and Africa. With an annual export value ranging between US$1 Million and US$1.5 Million, we have demonstrated our capability to reliably supply high-quality industrial valves to diverse markets. Our strategic location in Shanghai and multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing) enable flexible and efficient logistics. Backed by our ISO9001-certified manufacturing processes, every GB/T3036 Gear Operated Butterfly Valve is subjected to rigorous pressure testing and quality inspections, ensuring it meets the performance standards required for critical cooling water applications. Choose Shanghai Zhibang for a valve solution that combines robust engineering, operational reliability, and global supply chain support.
Frequently Asked Questions (FAQ):
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Q: What is the main advantage of a gear operator over a simple lever handle for this butterfly valve?
A: A gear operator provides a high mechanical advantage, making it much easier to open, close, or throttle large-diameter valves against significant line pressure. This allows for precise flow control and safer, more ergonomic operation without excessive force. -
Q: Can this valve be used with seawater or other highly corrosive cooling media?
A: Yes, for highly corrosive applications like seawater, we recommend selecting optional materials such as a stainless steel (CF8M/316) body and disc, along with a PTFE or specially formulated elastomer seat. Please specify your media conditions for a tailored recommendation. -
Q: Is the valve suitable for both isolation (on/off) and throttling (flow control) duties?
A: Absolutely. The gear operator allows for fine incremental adjustment, making this valve excellent for throttling. Combined with its bubble-tight shut-off capability, it is a versatile choice for both isolation and regulation in cooling water systems. -
Q: Do you offer actuated versions for remote or automated control?
A: Yes. The standard gear operator can be easily replaced with an electric or pneumatic actuator to enable integration into SCADA systems or for remote operation. We can supply the complete assembled unit. -
Q: What is the typical delivery lead time for a standard DN300, PN16 valve?
A: For standard material configurations (ductile iron/EPDM), lead times are generally short due to our inventory. Please contact our sales team with your specific quantity and port of destination for an accurate delivery schedule. -
Q: How does the GB/T3036 standard compare to international standards like API 609 or AWWA C504?
A: GB/T3036 is the Chinese national standard for butterfly valves, widely recognized and accepted, particularly in Asia. It specifies dimensions, materials, pressure ratings, and testing requirements. While it has technical equivalences to API and AWWA standards, it is crucial to confirm with your project engineers regarding specific standard compliance requirements. -
Q: What kind of testing do your valves undergo before shipment?
A: Every valve undergoes a shell test (at 1.5x PN) and a seat leakage test (per the required leakage class) using water as the test medium. Detailed test reports are available upon request. -
Q: Can you provide valves with different face-to-face dimensions than the GB/T3036 standard?
A: While we primarily manufacture to the GB/T3036 standard dimensions, we have the capability to produce valves with custom face-to-face lengths to fit specific spatial constraints or to match other international standards. This is a customizable option.
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