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Home > Industrial Equipment & Components > Valve > Butterfly Valve > GB/T3036 Wafer Butterfly Valve With Cast Iron Body and Stainless Steel Disc PN16 Rated
GB/T3036 Wafer Butterfly Valve With Cast Iron Body and Stainless Steel Disc PN16 Rated
Product Spotlights
GB/T 3036 standard wafer butterfly valve featuring a durable cast iron body and corrosion-resistant stainless steel disc for PN16 pressure systems. Offers bubble-tight sealing with EPDM seat, quarter-turn operation, and versatile manual or automated actuation options. Cost-effective, space-saving design ideal for water, air, and neutral fluid applications in industrial and municipal settings. Backed by ISO 9001 certified manufacturing.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Water
Body Material:
Cast Iron
Disc Material:
Stainless Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Water
Body Material
Cast Iron
Disc Material
Stainless Steel
Pressure Rating
PN16
Design Standard
GB/T 3036
Connection Type
Wafer (Double Flange)
Seat Material
EPDM (Standard) / NBR / Viton (Optional)
Operation Type
Lever / Gear / Actuator (Optional)
Size Range
DN50 - DN600 (2“ - 24“)
Temperature Range
-10°C to 120°C (with EPDM seat)
As a professional valve manufacturer with ISO 9001 certified quality management, Shanghai Zhibang Valve is proud to present our GB/T 3036 standard Wafer Butterfly Valve. Engineered for reliability and durability in demanding industrial and municipal applications, this valve combines a robust cast iron body with a corrosion-resistant stainless steel disc, delivering a cost-effective and long-lasting solution for flow control. Our commitment to precision manufacturing and stringent testing ensures every valve meets the performance expectations of our global clientele across diverse markets.
This wafer-style butterfly valve is designed for quick and easy installation between two pipe flanges, saving space and reducing installation time and costs. The PN16 pressure rating signifies its suitability for a wide range of medium-pressure systems. We understand the critical need for dependable fluid handling components, which is why our design focuses on a tight seal, smooth operation, and minimal maintenance requirements.
Core Design Features & Technical Advantages:
- Optimized Body & Disc Construction: The valve body is manufactured from high-grade cast iron, providing excellent mechanical strength and impact resistance. The disc is precision-machined from stainless steel (typically 304 or 316 grade, customizable), offering superior resistance to corrosion and erosion from the media, ensuring a longer service life even with abrasive or mildly corrosive fluids.
- Superior Sealing Performance: The valve utilizes a resilient seat, typically EPDM for general purposes, which is securely bonded or pressed into the body. This design creates a bubble-tight seal when closed, minimizing leakage. Alternative seat materials like NBR or Viton are available for specific fluid compatibility needs (oil, chemicals, higher temperatures).
- Efficient Flow Characteristics: The disc design offers low flow resistance when fully open, resulting in minimal pressure drop across the valve. This efficiency translates to energy savings in pumping systems. The quarter-turn (90-degree) operation allows for rapid opening and closing.
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Versatile Actuation Options: The valve stem is designed to interface with various operators to suit different control requirements.
- Manual Lever: For simple on/off service in easily accessible locations.
- Worm Gear Operator: Provides mechanical advantage for easier operation of larger size valves or higher differential pressures.
- Pneumatic/Hydraulic/Electric Actuators: Can be fitted for automated process control, remote operation, or integration into SCADA systems. Actuators are available upon request.
- Robust Stem Sealing: A multiple-layer stem sealing system, often incorporating O-rings and bushings, prevents external leakage along the stem, enhancing safety and environmental protection.
Key Technical Specifications:
| Parameter | Specification / Description |
|---|---|
| Design & Manufacturing Standard | GB/T 3036 (Chinese National Standard), comparable to international designs. |
| Pressure-Temperature Rating | PN16 (16 bar nominal pressure). Specific maximum working pressure depends on seat material and temperature. |
| Body Material | Cast Iron (GG25/250). Ductile Iron body is optional for higher impact applications. |
| Disc Material | Stainless Steel (CF8/304 or CF8M/316 as standard). Other alloys available for定制 (customization). |
| Seat Material (Standard) | EPDM (Ethylene Propylene Diene Monomer). Suitable for water, air, gases, weak acids/alkalis up to 120°C. |
| Stem Material | Stainless Steel (typically 1.4021/420 or 304), ensuring strength and corrosion resistance. |
| Connection | Wafer type, conforms to common flange standards like DIN, ANSI, JIS, etc. Flange drilling can be customized. |
| Size Range (Nominal Diameter) | Available from DN50 (2") up to DN600 (24"). Other sizes can be discussed. |
| Leakage Class | Designed to meet or exceed standard leakage rates for resilient-seated butterfly valves. |
| Surface Treatment | Body exterior is typically coated with epoxy paint or other protective coatings for corrosion protection. Internal surfaces are treated as per application. |
Benefits for Your Project:
- Cost-Effective Solution: The wafer design eliminates the need for valve flange bolts, reducing hardware and installation labor costs.
- Space-Saving Design: Compact construction compared to gate or globe valves, ideal for systems with limited space.
- Low Maintenance: Simple design with few moving parts leads to reduced maintenance needs and downtime.
- Quick Operation & Control: Quarter-turn operation allows for fast flow control, improving operational efficiency.
- Wide Application Range: Suitable for HVAC systems, water supply and distribution, wastewater treatment, fire protection, industrial process water, compressed air, and other neutral media.
- Reliable Supply: As a manufacturer, we maintain stable production capacity and inventory for standard sizes, ensuring timely delivery.
Trust and Global Reach: Established in 2016, Shanghai Zhibang Valve has built a reputation for quality and reliability, exporting to markets worldwide including North and South America, Europe, Southeast Asia, Africa, and the Middle East. Our annual export volume reflects the trust placed in us by international partners. Every valve undergoes factory testing to verify its performance before shipment. Our ISO 9001 certification is a testament to our systematic approach to quality control throughout the manufacturing process. For your next project requiring dependable PN16 rated butterfly valves, choose a partner committed to quality and service. Contact us today for pricing, detailed specifications, or to discuss custom requirements.
Frequently Asked Questions (FAQ):
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Q: What is the main difference between a wafer and a lug-style butterfly valve?
A: A wafer valve is installed between two flanges using longer bolts that pass through both flanges and the valve. A lug-style valve has threaded inserts (lugs) on the body, allowing it to be bolted to each flange independently, which can be useful for end-of-line service or dead-end pressure applications. Our standard offering is the wafer type, which is more common and cost-effective for inline installation. -
Q: Can this valve be used for throttling (flow regulation)?
A: While primarily designed for on/off service, this resilient-seated butterfly valve can be used for moderate throttling applications. However, for precise flow control over a wide range, especially with high pressure drops, a specially designed control valve or a high-performance butterfly valve would be more suitable. The disc position and actuator type can be selected for basic regulation needs. -
Q: What seat material should I choose for my application?
A: The standard EPDM seat is suitable for water (including potable water), air, and many neutral fluids up to 120°C. For oils, fuels, or certain solvents, NBR (Nitrile) is often recommended. For aggressive chemicals or higher temperatures (up to 180°C), Viton (FKM) is an option. Please provide details of your media (type, concentration, temperature) for a specific recommendation. -
Q: Is the valve suitable for potable water applications?
A: Yes, when configured with an EPDM seat and appropriate food-grade lubricants, the valve can be used in potable water systems. Certificates of material compliance (such as WRAS, KTW, or NSF61) for the wetted parts can be provided upon request, subject to specific model and configuration. -
Q: What flange standards are compatible with this wafer valve?
A: The valve is designed to fit between standard pipe flanges. Common standards include DIN PN10/16, ANSI 150, JIS 10K, etc. The bolt hole pattern on the valve typically aligns with these standards. It is crucial to confirm your pipeline's flange standard and facing (e.g., RF - Raised Face) when placing an order to ensure a proper fit. -
Q: Do you provide actuators with the valve?
A: We can supply the valve as a manual unit (lever or gear) or as a complete package with pneumatic, electric, or hydraulic actuators. We work with reputable actuator suppliers and can assemble and test the actuated package before shipment. Please specify your required actuator type, torque, control signal (for electric), and air pressure (for pneumatic) for a quotation. -
Q: What is your standard delivery time for this product?
A: For standard sizes and configurations, we typically have stock or can deliver within 15-30 days. Lead times for larger sizes, special materials, or actuated packages may be longer. We provide estimated delivery times with every quotation based on current production schedules. -
Q: What testing is performed on the valves before shipment?
A> Each valve undergoes routine factory tests, which generally include a shell strength test (hydrostatic pressure test on the body) and a seat leakage test (usually with air or water) to verify sealing performance. More extensive testing, such as full flow testing or third-party inspection, can be arranged if required.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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