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Help CenterFull Stainless Steel Lug Butterfly Valve GB/T3037-94 for Chemical Process Pipe Systems
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Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our Full Stainless Steel Lug Butterfly Valve designed in accordance with GB/T3037-94 standard. As a dedicated manufacturer since 2016, we have supplied high-quality valves to over 50 countries, with annual export value exceeding US$1 million. This valve is specifically engineered for demanding chemical process pipe systems, offering exceptional corrosion resistance, reliable sealing, and long service life. Every unit undergoes strict quality control under our ISO9001 certified management system, ensuring consistent performance in harsh environments.
Our lug butterfly valve features a full stainless steel body, disc, and stem, making it ideal for handling corrosive media such as acids, alkalis, and chemical solvents. The lug-style connection allows easy installation between flanges and facilitates maintenance without disturbing the downstream piping. Key advantages include:
- Full Stainless Steel Construction – All wetted parts are made of high-grade stainless steel (CF8/CF8M optional), providing excellent resistance to chemical attack and high temperatures.
- GB/T3037-94 Compliance – Manufactured strictly to Chinese national standard, ensuring dimensional accuracy and interchangeability.
- Lug-Type Design – Enables through-bolt installation, reduces piping stress, and allows easy removal for maintenance.
- Low Torque Operation – Optimized disc profile and precision-machined stem reduce operating torque, extending actuator life.
- Bubble-Tight Sealing – Available with PTFE or reinforced PTFE seat for zero leakage in both directions.
- Wide Application Range – Suitable for chemical, petrochemical, pharmaceutical, water treatment, and food processing industries.
Technical Specifications (typical values, customizable upon request):
| Parameter | Value |
| Size Range | DN50 – DN600 (2” – 24”) |
| Pressure Rating | PN10 / PN16 (150# optional) |
| Temperature Range | -20°C to +150°C (with PTFE seat) |
| Body Material | Stainless Steel 304 / 316 (CF8 / CF8M) |
| Disc Material | Stainless Steel 304 / 316 |
| Stem Material | Stainless Steel 304 / 316 |
| Seat Material | PTFE / RPTFE / EPDM (optional) |
| Operation | Wrench, Gearbox, Pneumatic or Electric Actuator |
| End Connection | Lug Type (ANSI B16.5 / DIN flanges available) |
Our valve offers distinct benefits to customers: reduced downtime thanks to easy maintenance, lower total cost of ownership due to durable materials, and enhanced safety through reliable sealing. The full stainless steel construction eliminates the risk of rust contamination in sensitive processes. Furthermore, the lug design allows for installation in dead-end service, providing flexibility in system layout.
Shanghai Zhibang Valve has been a trusted manufacturer since 2016, with annual export value between US$1 million and US$1.5 million. Our products are exported to North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. We hold ISO9001 certification for quality management, and our factory is located in Shanghai, China, with convenient shipping ports including Shanghai, Guangzhou, Hong Kong, and Beijing. Each valve is tested for pressure and leak tightness before shipment, ensuring you receive a reliable product. We welcome custom orders and OEM requests. Contact us today for a quote or technical assistance – let our expertise support your chemical process systems.
Frequently Asked Questions
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Q: What materials are used for the valve body and disc?
A: Both the body and disc are made of full stainless steel, typically CF8 (304) or CF8M (316) as per your requirement. The stem is also stainless steel. -
Q: Can this valve be used for high-temperature fluids?
A: Yes, with PTFE seat the temperature range is -20°C to +150°C. For higher temperatures, we can offer alternative seat materials like graphite or metal seat (customizable). -
Q: What is the difference between lug-type and wafer-type butterfly valves?
A: Lug-type valves have threaded inserts on both sides, allowing them to be bolted directly to flanges and removed without disturbing the downstream pipe. Wafer-type fits between flanges and requires removal of both flanges for service. -
Q: Is this valve suitable for oil or gas applications?
A: While designed for chemical processes, it can be used for oil, gas, and water as long as the media is compatible with stainless steel and the seat material. Please provide media details for proper selection. -
Q: Do you provide certifications like ISO or material test reports?
A: Yes, our factory is ISO9001 certified, and we can provide material certificates, pressure test reports, and other documentation upon request. -
Q: Can I get customized sizes or pressure ratings?
A: Absolutely. We offer custom sizes from DN50 to DN600 and pressure ratings up to PN16 or 150#. Non-standard dimensions can be discussed. -
Q: What is the lead time for standard orders?
A: For standard sizes, lead time is typically 15–25 working days after confirmation. Larger quantities or custom orders may require more time. -
Q: How is the valve packaged for export?
A: Each valve is individually wrapped in plastic, then packed in wooden cases or pallets to ensure safe transportation. We follow international export packaging standards.
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