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Help CenterGB/T3036 Lever Operated Butterfly Valve With Stainless Steel Disc and EPDM Seal DN50-DN300
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As a professional manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance GB/T 3036 Lever Operated Butterfly Valve. Engineered for reliable on/off and throttling service in a wide range of industrial applications, this valve combines a durable stainless steel disc with a resilient EPDM seal to deliver exceptional sealing performance and long service life. Our commitment to precision manufacturing since 2016 ensures that every valve meets stringent standards, providing our global clients in over a dozen markets with a dependable and cost-effective flow control solution.
This butterfly valve is designed for simplicity and efficiency. The lever operation allows for quick and easy manual control, making it ideal for applications where frequent operation is required. The core of its reliability lies in the material combination: the corrosion-resistant stainless steel disc ensures strength and durability, while the EPDM seal provides excellent elasticity and resistance to a variety of media, including water, air, and many neutral chemicals.
Key Features and Technical Advantages:
- Superior Sealing Performance: The EPDM seat ensures bubble-tight shut-off, minimizing leakage and ensuring process integrity.
- Corrosion-Resistant Disc: The stainless steel disc is highly resistant to rust and corrosion, extending the valve's lifespan even in demanding environments.
- Robust Construction: The valve body, typically made from ductile iron, provides structural strength to withstand pipeline pressures and stresses.
- Easy Operation & Indication: The lever handle offers a clear visual indication of the valve position (open or closed) and requires minimal effort to operate.
- Bi-Directional Flow: The symmetrical design of the disc allows the valve to be installed for flow in either direction, simplifying installation.
- Compact & Lightweight: Compared to other valve types like gate valves, butterfly valves have a much shorter face-to-face dimension and are lighter, saving space and supporting costs.
- Low Maintenance: The simple design with fewer moving parts translates to reduced maintenance needs and lower lifetime costs.
Technical Specifications Table:
| Parameter | Specification |
|---|---|
| Product Standard | GB/T 3036 |
| Size Range | DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 |
| Disc Material | Stainless Steel (CF8/304 or CF8M/316 optional) |
| Seat / Seal Material | EPDM (Standard), NBR, Viton available upon request |
| Body Material | Ductile Iron (GGG40) / Cast Iron (GG25) |
| Shaft Material | Stainless Steel (Standard) |
| Pressure Rating | PN10, PN16 (150psi) |
| Temperature Range (with EPDM) | -20°C to +120°C |
| Operation | Lever Handle (Lockable options available) |
| Connection | Wafer Type (Standard), Lug Type (Optional) |
Applications and Benefits for Your Business:
This valve is perfectly suited for HVAC systems, water treatment plants, irrigation, industrial water lines, and chemical processing (compatible fluids). Its benefits are clear: you gain a reliable component that reduces downtime due to failure, lowers total cost of ownership through durability and easy maintenance, and ensures consistent process control. The lever operation eliminates the need for tools, speeding up routine procedures and enhancing operational safety.
Backed by our ISO9001 certification and nearly a decade of manufacturing expertise, Shanghai Zhibang Valve delivers products that meet consistent quality benchmarks. With an annual export value reflecting strong international trust, and major shipment ports like Shanghai and Guangzhou ensuring efficient logistics, we are a reliable partner for your valve needs. Our valves are proven across diverse markets from North America to Southeast Asia. Choose our GB/T 3036 Lever Butterfly Valve for a balance of performance, durability, and value. Contact us today to discuss your specifications or request a quotation.
Frequently Asked Questions (FAQ):
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Q: What is the main advantage of the stainless steel disc in this valve?
A: The stainless steel disc provides superior corrosion resistance compared to coated or other metallic discs, significantly enhancing the valve's longevity, especially when handling water or mildly corrosive fluids. It maintains its integrity and surface finish, which is crucial for effective sealing. -
Q: Is the EPDM seal suitable for oil or fuel applications?
A: No, standard EPDM is not recommended for petroleum-based oils, fuels, or aromatic hydrocarbons. For such applications, alternative seal materials like NBR or FKM (Viton) can be provided. Please specify your media during inquiry. -
Q: What is the difference between wafer and lug type connections?
A: A wafer-style valve is installed between two flanges using longer bolts. A lug-style valve has threaded inserts (lugs) on the valve body, allowing it to be bolted directly to each flange, which can be beneficial for end-of-line service or easier maintenance. -
Q: Can this valve be used for throttling (flow control)?
A: Yes, the lever-operated design allows for precise positioning, making it suitable for throttling applications. However, for fine control over a wide range, a gear operator might be more appropriate. -
Q: What is the lead time for an order of DN200 valves?
A: Standard sizes and materials typically have shorter lead times. For accurate delivery schedules, please contact our sales team with your specific quantity and material requirements. -
Q: Are these valves suitable for potable water applications?
A: With standard EPDM seals and stainless steel discs, they are commonly used in water systems. For certified potable water use, specific material certifications (like WRAS, KTW) may be required and should be requested. -
Q: Do you provide a warranty for your butterfly valves?
A: Yes, we provide a standard warranty against manufacturing defects. The specific warranty period and terms can be confirmed upon order. -
Q: Can the lever handle be locked in position?
A: Yes, lockable lever handles are available as an option to secure the valve in either the open or closed position, which is important for safety and process security.
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