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Help CenterGB/T3037-94 Full Stainless Steel Lug Butterfly Valve Used in Water Treatment Plant
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016 and located in Shanghai, China, is a professional manufacturer specializing in high-quality industrial valves. Our GB/T3037-94 Full Stainless Steel Lug Butterfly Valve is designed specifically for water treatment plants, offering outstanding corrosion resistance, reliable sealing, and long service life. With an annual export value of US$1 million to US$1.5 million, we have supplied this product to markets across North America, South America, Europe, Asia, Africa, and Oceania, gaining trust from global customers.
This butterfly valve is manufactured in full compliance with the Chinese national standard GB/T3037-94, ensuring dimensional accuracy and interchangeability. The lug-type body design allows for easy installation between flanges, reducing maintenance time and cost. Made from full stainless steel (304 or 316 optional), it provides excellent resistance to rust and chemical attack, making it ideal for clean water, sewage, and neutral liquid applications in water treatment processes.
Key Features & Advantages:
- Full Stainless Steel Construction: Valve body, disc, and stem are all stainless steel (CF8/CF8M), eliminating the need for internal linings and ensuring long-term durability.
- GB/T3037-94 Compliance: Strictly manufactured according to the national standard, guaranteeing precise flange-to-flange dimensions and pressure ratings.
- Lug Type Design: Features threaded inserts for easy installation with blind flanges, allowing downstream piping removal without shutting down the entire system.
- High Corrosion Resistance: Suitable for a wide range of water treatment chemicals, chlorine, and acidic or alkaline wastewater.
- Versatile Seal Options: Available with EPDM, NBR, or PTFE seat rings to match different temperature and chemical compatibility requirements.
- Low Torque Operation: Optimized disc profile reduces operating torque, enabling manual or actuator operation with minimal energy.
- Bubble-Tight Shutoff: Precision-machined sealing surfaces provide zero leakage under pressure, meeting industry standards for water treatment applications.
- Compact and Lightweight: Compared to gate valves, the butterfly valve saves space and weight, reducing support structure costs.
Technical Specifications (Typical):
| Parameter | Value |
| Standard | GB/T3037-94 |
| Body Material | Stainless Steel 304 / 316 (CF8 / CF8M) |
| Size Range | DN50 – DN600 (2" – 24") |
| Pressure Rating | PN10 / PN16 / Class 150 |
| Operating Temperature | -20°C to 150°C (depending on seal) |
| Seat Material | EPDM / NBR / PTFE (optional) |
| Connection | Lug Type (between flanges) |
| Operation | Manual Lever / Gearbox / Pneumatic / Electric Actuator (optional) |
Customer Benefits:
- Reduced downtime: lug design allows easy valve replacement without draining the entire pipeline.
- Cost-effective: stainless steel eliminates the need for expensive coatings or linings, with lower total cost of ownership.
- Reliable supply: Shanghai Zhibang Valve maintains sizable inventory for quick delivery, with shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing.
- Customizable: actuators, seals, and special sizes are available upon request to meet specific project requirements.
Shanghai Zhibang Valve Manufacture Co., Ltd. is a manufacturer with ISO9001 certification, ensuring consistent quality control from raw material incoming to final testing. Our factory in Shanghai produces valves with strict adherence to Chinese national standards, and we have exported to over 15 countries and regions. With annual export value exceeding US$1 million, our products are trusted by water treatment plants, municipal engineering projects, and industrial facilities worldwide.
We welcome distributors, engineers, and procurement professionals to contact us for more details, sample requests, or customized solutions. Our team provides prompt technical support, competitive pricing, and reliable after-sales service. Choose Shanghai Zhibang Valve for your water treatment valve needs – experience quality, durability, and professional service.
Frequently Asked Questions (FAQ)
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Q: What is the difference between a lug butterfly valve and a wafer butterfly valve?
A: A lug butterfly valve has threaded inserts (lugs) in the body, allowing it to be installed using bolts and nuts, and it can be used for dead-end service. A wafer valve is clamped between flanges and cannot hold the line pressure on one side. Our GB/T3037-94 lug valve is suitable for end-of-line applications in water treatment. -
Q: Can this valve be used for seawater or corrosive media?
A: Yes, the full stainless steel construction (316 grade) combined with PTFE or EPDM seals provides excellent resistance to seawater, mild acids, and alkaline solutions. Please specify your medium when ordering for optimal seal material. -
Q: What is the maximum working pressure for this valve?
A: The standard pressure ratings are PN10 (10 bar), PN16 (16 bar), and Class 150 (approx. 20 bar). For higher pressures, custom designs may be available – please consult our sales team. -
Q: Do you provide actuator mounting and automation?
A: Yes, we offer manual lever, gearbox, pneumatic actuator, and electric actuator options. The valve top flange complies with ISO 5211 for direct mounting of standard actuators. Please specify your required torque and control type. -
Q: What is the lead time for this valve?
A: For standard sizes and materials, typical lead time is 15–25 working days. Custom orders may take 30–45 days. We also keep a stock of popular sizes for quick shipment. -
Q: Is the valve certified for drinking water applications?
A: Our valve is made of stainless steel and EPDM/NBR seals, which are commonly used in potable water systems. However, specific local drinking water certifications may vary; please contact us to discuss your requirements. -
Q: Can you provide inspection or testing certificates?
A: Yes, we can provide material test certificates (MTC), pressure test reports, and hydrostatic test certificates. ISO9001 quality control procedures are followed throughout production. -
Q: What is your warranty policy?
A: We offer a standard 12-month warranty from the date of shipment against manufacturing defects. Extended warranty may be available upon request.
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