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Help CenterDIN 3202 Butterfly Valve Supplied With Mill Test Report and 12-Month Warranty
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As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to offer our premium DIN 3202 Butterfly Valve. Designed for demanding industrial applications, this valve combines robust construction, reliable performance, and full traceability with a supplied Mill Test Report. We understand the critical need for dependable flow control in your operations, which is why each valve is backed by our comprehensive 12-month warranty and manufactured under our ISO9001 certified quality management system.
Our butterfly valves are engineered to provide a tight seal and smooth operation across a wide range of media, including water, air, gases, and mild chemicals. They are a cost-effective and space-saving solution for on/off and throttling services in numerous industries.
Key Features & Technical Advantages:
- Compliant Design: Manufactured strictly in accordance with DIN 3202 standards, ensuring dimensional interchangeability and reliable performance in European and international markets.
- Material Versatility: Available in various body materials like cast iron, ductile iron, and stainless steel, with seat options including EPDM, NBR, and PTFE to suit different temperature and media compatibility requirements.
- Superior Sealing: The disc design and resilient seat provide excellent bubble-tight shut-off, minimizing leakage and ensuring process integrity.
- Low Torque Operation: Optimized disc profile allows for easy operation with manual levers, gear operators, or automated actuators, reducing operational effort and energy consumption.
- Compact & Lightweight: The wafer or lug design offers a significant space and weight advantage over gate or globe valves, simplifying installation and supporting structural savings.
- Full Documentation: Each valve is supplied with a Mill Test Report (MTR), providing verified chemical and mechanical properties of the materials used, essential for quality assurance and project documentation.
Detailed Specifications:
| Parameter | Specification / Option |
| Design Standard | DIN 3202 |
| Size Range (DN) | 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600 |
| Pressure Rating (PN) | PN10, PN16 |
| Connection Type | Wafer, Lug (Double Flange) |
| Body Material | Cast Iron (GG25), Ductile Iron (GGG40), Stainless Steel (CF8/CF8M) |
| Disc Material | Ductile Iron (Epoxy Coated), Stainless Steel (304/316) |
| Seat Material | EPDM, NBR, PTFE (Viton available upon request) |
| Stem Material | Stainless Steel (410/304) |
| Operation | Lever, Worm Gear Operator, Pneumatic/Hydraulic/Electric Actuator |
| Temperature Range | Depends on seat material: EPDM (-20°C to +120°C), NBR (-10°C to +80°C), PTFE (-30°C to +200°C) |
| Face-to-Face | As per DIN 3202 F4/F5 series |
Application Areas: These valves are widely used in water treatment plants, HVAC systems, power generation, chemical processing, oil & gas pipelines (downstream), irrigation, shipbuilding, and general industrial services where reliable isolation and control are required.
Frequently Asked Questions (FAQ):
Q1: What is the significance of the DIN 3202 standard for this butterfly valve?
A1: DIN 3202 is a German industrial standard specifying face-to-face dimensions, pressure-temperature ratings, and testing requirements for butterfly valves. Compliance ensures the valve will fit properly between DIN standard flanges and perform reliably under rated conditions, which is crucial for system integration, especially in European and global projects referencing these norms.
Q2: What exactly is included in the Mill Test Report (MTR)?
A2: The Mill Test Report is a certificate from the raw material manufacturer. It provides verified data on the chemical composition and mechanical properties (like tensile strength, yield strength, elongation) of the metal used for the valve body, disc, and stem. This document is vital for traceability, quality audits, and ensuring the materials meet the specified grades for your application.
Q3: Can this valve be used for throttling flow control?
A3: Yes, our butterfly valves with the appropriate seat and disc design are suitable for both on/off service and throttling control. For precise modulation, pairing the valve with a suitable actuator (electric or pneumatic) and positioner is recommended. The characteristic between disc opening angle and flow rate is relatively linear, making it effective for control purposes.
Q4: What is the difference between wafer and lug type connections?
A4: A wafer-style valve is designed to be clamped between two pipeline flanges using long bolts. A lug-style valve has threaded inserts (lugs) on both sides of the valve body, allowing it to be bolted directly to each flange independently. Lug types are often preferred for end-of-line services or when one side of the pipeline needs to be disconnected without affecting the other.
Q5: How do I select the correct seat material (EPDM, NBR, PTFE)?
A5: Selection depends on the media and temperature. EPDM is excellent for hot water, steam, and some chemicals. NBR is suitable for oils, fuels, and water at lower temperatures. PTFE offers broad chemical resistance and a higher temperature range but may be a higher-cost option. Please provide your service media and temperature details for our recommendation.
Q6: Are actuators available, and can you supply the assembled unit?
A6: Yes, we can provide pneumatic (double-acting or spring-return), electric, or hydraulic actuators from reputable brands. We offer the service of mounting, setting, and testing the actuator-valve combination as a complete package, ready for installation, which saves you time and ensures compatibility.
Q7: What does the 12-month warranty cover?
A7: Our warranty covers defects in materials and workmanship under normal use for a period of 12 months from the date of shipment. It includes the repair or replacement of the faulty valve. The warranty does not cover damage due to improper installation, misuse, operation beyond specified limits, or wear and tear of sealing elements under normal service conditions.
Q8: What are your main export markets and shipping terms?
A8: We export extensively worldwide, with significant markets in North America, South America, Europe, Southeast Asia, the Middle East, Africa, and Oceania. We ship from major Chinese ports like Shanghai, Guangzhou, Hong Kong, and Beijing. Standard trade terms like FOB, CIF, or CFR can be arranged based on your preference and destination.
Backed by our ISO9001 certification and years of experience supplying valves to a global clientele across six continents, you can trust Shanghai Zhibang for a product that meets rigorous standards. Our commitment to providing a Mill Test Report with every valve underscores our transparency and dedication to quality. Combined with our straightforward 12-month warranty, this offering delivers not just a product, but confidence and reliability for your critical systems. Contact us today to discuss your specifications or request a quotation for your project needs.
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