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Help Center316L Stainless Steel Disc for GB/T3036 Wafer Butterfly Valve With EPDM Seal
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As a professional manufacturer specializing in industrial valve components since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our precision-engineered 316L Stainless Steel Disc designed for GB/T3036 standard Wafer Butterfly Valves with EPDM seals. This critical component is manufactured with stringent quality control under our ISO9001 certified system, ensuring reliable performance in demanding fluid control applications across the globe. Engineered for durability and optimal sealing, our disc is the heart of a high-performance butterfly valve, directly impacting system efficiency and longevity.
Our core value lies in providing robust, corrosion-resistant valve internals that meet international pipeline standards. With an annual export value reflecting our global reach across North America, Europe, Asia, and beyond, we understand the diverse requirements of different markets and applications. This disc is a testament to our commitment to quality, designed to integrate seamlessly into your valve assembly, reducing downtime and maintenance costs.
Detailed Product Features & Technical Advantages:
- Superior Corrosion Resistance: Fabricated from premium 316L stainless steel, the disc offers exceptional resistance to a wide range of corrosive media, including chlorides, acids, and alkalis, making it ideal for chemical processing, marine, and water treatment applications.
- Precision Engineering for GB/T3036 Standard: The disc is meticulously machined to comply with the dimensional and tolerance requirements of the Chinese GB/T3036 standard for wafer butterfly valves, ensuring perfect fit and function within compatible valve bodies.
- Optimized with EPDM Seal Compatibility: Designed specifically to work with an EPDM (Ethylene Propylene Diene Monomer) seat seal, the disc profile ensures a tight, bubble-tight shut-off. EPDM provides excellent resistance to weathering, ozone, and a broad temperature range (-40°C to +120°C).
- Enhanced Flow Characteristics: The disc's aerodynamic design minimizes turbulence and pressure drop across the valve when in the open position, promoting efficient flow and reducing energy consumption in pumping systems.
- Rigorous Quality Assurance: Every disc undergoes multiple inspection stages, including dimensional checks, material verification, and surface finish assessment, backed by our ISO9001 quality management system.
Technical Specifications:
| Parameter | Specification |
| Primary Material | 316L Stainless Steel (UNS S31603) |
| Material Standard | AISI 316L / ASTM A276 |
| Design Standard | GB/T3036 (Wafer Butterfly Valve) |
| Seal Compatibility | EPDM Rubber Seat (Standard) |
| Available Sizes (Nominal Bore) | DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 (Other sizes customizable) |
| Pressure Rating | Suitable for valves rated up to PN16/Class 150 |
| Surface Treatment | Polished (Standard Ra ≤ 0.8μm), Passivation available |
| Operating Temperature Range | -20°C to +150°C (with EPDM seat, medium dependent) |
Benefits for Your Operations:
- Extended Valve Service Life: The corrosion-resistant 316L construction significantly reduces wear and degradation, extending the overall service life of the valve assembly and lowering total cost of ownership.
- Reliable Sealing Performance: The precision-machined disc working in tandem with the EPDM seal ensures consistent, leak-free operation, crucial for system safety and environmental compliance.
- Reduced Maintenance & Downtime: Durable materials and precise manufacturing lead to fewer failures, minimizing unplanned maintenance stops and associated production losses.
- Global Standard Compliance: Adherence to GB/T3036 makes it suitable for projects requiring this standard, while the material quality meets international expectations, facilitating use in export-oriented projects.
- Customization Flexibility: We offer customization options for special sizes, surface finishes (e.g., electropolishing), or slight design modifications to fit specific valve models or OEM requirements.
Trust & Global Capability:
Shanghai Zhibang Valve Manufacture Co., Ltd. is not just a supplier; we are a manufacturing partner with a proven track record. Established in 2016, our growth is built on consistent quality and reliable delivery. Our ISO9001 certification is a cornerstone of our production process, providing a framework for continuous improvement. With an annual export value demonstrating our international competitiveness, we successfully serve diverse markets from North America and Western Europe to Southeast Asia and Africa. Our strategic location in Shanghai, with access to major ports like Shanghai, Guangzhou, and Hong Kong, enables efficient and cost-effective logistics to meet your timeline. Choose our 316L Stainless Steel Disc for a component that delivers performance, durability, and peace of mind. Contact us today to discuss your requirements, request samples, or place an order.
Frequently Asked Questions (FAQ):
Q1: Is this disc compatible with valve brands other than those strictly following GB/T3036?
A1: While designed to the GB/T3036 standard, the disc's dimensions are generally interchangeable with many international wafer butterfly valve designs of equivalent pressure ratings (like PN16/Class 150). We recommend providing your specific valve model or detailed drawings for compatibility confirmation.
Q2: Can you provide the disc with a different seal material instead of EPDM?
A2: Yes. Although configured for EPDM, we can customize the disc profile or edge preparation to be compatible with other elastomers like NBR (Nitrile), Viton® (FKM), or Silicone based on your application's chemical and temperature needs.
Q3: What is the main advantage of 316L over 304 or 316 stainless steel for this disc?
A3: 316L has a lower maximum carbon content, which enhances its resistance to sensitization (carbide precipitation) during welding or high-temperature service. This makes it particularly suitable for applications involving welding the valve into pipelines or for use in highly corrosive environments where intergranular corrosion is a concern.
Q4: Do you offer these discs for higher pressure classes, like PN25 or PN40?
A4: Yes, we can manufacture discs designed for higher pressure ratings. This typically involves adjustments to thickness and structural design. Please specify your required pressure class (PN/Class) and valve size for a customized quotation.
Q5: What surface finish options are available, and how do they affect performance?
A5: Standard finish is a mechanical polish. A smoother finish (e.g., electropolishing) can be requested, which further improves corrosion resistance, reduces particle adhesion, and can enhance seal life by providing a smoother sealing surface.
Q6: What is your typical lead time for standard sizes, and do you hold stock?
A6: Lead times vary based on order quantity and current production schedule. For standard DN50-DN300 sizes, typical lead time is 4-6 weeks. We maintain limited stock for popular sizes; please inquire for specific availability.
Q7: Can you provide material test certificates for the 316L stainless steel?
A7: Yes. We can provide Mill Test Certificates (MTCs) or material certification from our suppliers upon request, verifying the chemical composition and mechanical properties of the raw material used.
Q8: What packaging do you use to prevent damage during shipping?
A8: Each disc is individually protected with anti-corrosive paper or plastic and securely packed in a wooden crate or heavy-duty carton with internal bracing to prevent movement and impact damage during transit, ensuring it arrives in perfect condition.
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