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Help CenterManual Gear Operated GB/T3036 Butterfly Valve With 304 Stainless Steel Disc
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As a professional valve manufacturer with a strong export presence, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our high-performance Manual Gear Operated Butterfly Valve. Engineered to the GB/T3036 standard and featuring a robust 304 Stainless Steel disc, this valve is designed for reliable, long-lasting service in a wide range of industrial applications. Since our establishment in 2016, we have committed to delivering quality fluid control solutions, and this valve exemplifies our dedication to combining durability with precise manual operation for optimal flow control.
This valve is engineered for efficiency and durability. The gear operator provides significant mechanical advantage, allowing for smoother and easier opening and closing, even in high-pressure or large-diameter applications, reducing operator fatigue.
- Superior Disc Design: The heart of the valve is its 304 stainless steel disc. This material offers excellent corrosion resistance, high strength, and good wear properties, ensuring the disc maintains its integrity and sealing capability over extended use, even when handling mildly corrosive media or water with impurities.
- Gear Operation Advantage: The manual gear operator is a key feature. It translates high input torque at the handwheel into higher output torque at the stem, making the valve much easier to operate than a simple lever-operated butterfly valve, especially for sizes above DN200. It often includes a visual position indicator (open/close) and a locking device for safety.
- Versatile Sealing Options: The seat is available in various elastomers like EPDM for water and general services, NBR for oil applications, or PTFE for higher chemical resistance and temperature. This allows customization based on the specific fluid, temperature, and pressure conditions.
- Robust Construction: The valve body is typically constructed from cast iron, ductile iron, or carbon steel, coated with epoxy paint for corrosion protection. The stem is usually made of stainless steel (304 or 316) for strength and corrosion resistance, ensuring reliable torque transmission.
- Broad Application Range: Designed per GB/T3036, a widely recognized Chinese national standard for butterfly valves, this product is suitable for numerous sectors including water treatment and distribution, oil & gas pipelines, chemical processing, HVAC systems, power generation, and shipbuilding.
Below is a summary of common technical specifications. Please note that specific parameters can be customized upon request.
| Parameter | Specification / Options |
|---|---|
| Design Standard | GB/T3036 |
| Nominal Diameter (DN) | DN50, DN65, DN80, DN100, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600, DN700, DN800, DN900, DN1000, DN1200 |
| Pressure Rating (PN) | PN6, PN10, PN16 |
| Disc Material | 304 Stainless Steel (Standard) |
| Body Material | Cast Iron (GG25), Ductile Iron (GGG40), Carbon Steel (WCB) |
| Seat Material | EPDM, NBR, Viton, PTFE, etc. |
| Stem Material | Stainless Steel (304/316) |
| Operation Type | Manual Worm Gear Operator |
| Connection Type | Wafer, Lug, Double Flange |
| Face-to-Face Dimension | Complies with GB/T3036 or can be customized |
The primary benefit for your operation is reliable and low-maintenance flow control. The gear operation reduces manpower requirements, the stainless steel disc minimizes wear and failure, and the standardized design ensures easy integration and potential spare parts availability. This translates to lower total cost of ownership through reduced downtime and maintenance costs.
Shanghai Zhibang Valve operates under a certified ISO9001 quality management system, ensuring consistent manufacturing processes and product quality control for every valve we produce. Our annual export value reflects the trust placed in us by clients across North America, South America, Europe, Asia, Africa, and Oceania. We have the experience and logistical capability to ship efficiently from major Chinese ports like Shanghai, Guangzhou, Hong Kong, and Beijing. Choosing our manual gear-operated butterfly valve means selecting a product backed by a manufacturer with a proven global track record, dedicated to providing a durable and cost-effective solution for your piping system needs. Contact us today to discuss your specific requirements and request a quotation.
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 (gear ratio), making it much easier to open and close the valve, especially for larger sizes (typically above DN200) or higher pressure applications. It reduces operator effort and allows for more precise flow control.
Q2: Can this valve be used for throttling (partial flow control)?
A: While butterfly valves can be used for throttling, the manual gear operator is primarily designed for on/off service. For frequent or precise throttling, other valve types or actuated versions might be more suitable. The gear operator does allow for finer adjustment than a simple lever.
Q3: Is the 304 stainless steel disc suitable for seawater or highly corrosive chemicals?
A: 304 stainless steel offers good general corrosion resistance but is not ideal for continuous exposure to seawater or strong chlorides. For such applications, a 316 stainless steel disc or other specialized materials can be offered as an option. Please specify your media when inquiring.
Q4: What does "GB/T3036" mean, and is it compatible with international standards?
A: GB/T3036 is a Chinese National Standard for metal-seated butterfly valves. It covers design, dimensions, pressure ratings, and testing. Many of its specifications are aligned with common international practices (like face-to-face dimensions), ensuring good compatibility in global projects. We can also supply valves to other standards like ANSI, DIN, or JIS upon request.
Q5: Do you offer different end connections besides wafer type?
A: Yes. This valve series is commonly available in Wafer, Lug, and Double Flange (Flanged) end connections. The choice depends on your piping system design and installation requirements (e.g., lug valves are suitable for end-of-line service).
Q6: What is the typical lead time for an order?
A: Lead time depends on the order quantity, size, and material specifications. For standard configurations in common sizes, we often have stock or can produce within a few weeks. We provide accurate lead time estimates with every quotation.
Q7: Can the valve be equipped with an actuator for automated operation later?
A: Yes, the gear operator box is often designed to be compatible with the addition of a pneumatic or electric actuator. This allows for future automation upgrades. Please inform us if this is a consideration, as we may recommend specific gearbox models.
Q8: What kind of testing do your valves undergo before shipment?
A> In line with our ISO9001 commitment, our valves undergo routine factory tests which typically include shell strength tests (hydrostatic pressure) and seat leakage tests (usually with air or water) to ensure they meet the specified pressure rating and sealing performance standards.
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