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Help CenterDIN 3202 Flanged Ductile Iron Butterfly Valve, 316 Stainless Steel Stem, PTFE Seat Option
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As a professional valve manufacturer based in Shanghai, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in delivering high-performance industrial flow control solutions. Our DIN 3202 Flanged Ductile Iron Butterfly Valve, featuring a 316 stainless steel stem and optional PTFE seat, is engineered for demanding applications where reliability and longevity are non-negotiable. With ISO9001 certified production processes and a commitment to quality since our establishment in 2016, we ensure each valve meets stringent international standards, offering our global clients a perfect balance of durability, cost-effectiveness, and superior sealing performance.
This valve is a cornerstone for efficient flow regulation in various industrial systems. Its design and construction offer distinct advantages:
- Robust Construction: The ductile iron body provides exceptional strength and impact resistance, far superior to standard cast iron, ensuring a long service life even under fluctuating pressure conditions.
- Superior Corrosion Resistance: The stem is crafted from 316 stainless steel, offering excellent resistance to a wide range of corrosive media, including chlorides, which enhances the valve's reliability in harsh environments.
- Exceptional Sealing: The optional PTFE (Polytetrafluoroethylene) seat delivers a bubble-tight shut-off with low operating torque. PTFE's chemical inertness and wide temperature range make it ideal for handling aggressive fluids.
- Standard Compliance: Manufactured to DIN 3202 standards, the valve ensures dimensional interchangeability and compatibility with piping systems commonly used across Europe and other international markets.
- Versatile Actuation: Designed to be compatible with manual levers, gear operators, and a full range of electric or pneumatic actuators, providing flexibility for automated control systems.
- Easy Installation & Maintenance: The flanged connection allows for straightforward installation between pipe flanges, and the wafer-style design (where applicable) minimizes space and weight requirements.
The technical specifications of our valve are detailed to provide clarity for engineers and procurement specialists:
| Parameter | Specification |
|---|---|
| Design & Face-to-Face | DIN 3202 F4 / F5 / F7 |
| Pressure Rating (PN) | 10, 16, 25 (Standard) |
| Temperature Range (with PTFE Seat) | -10°C to +150°C |
| Size Range (DN) | 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600 |
| Stem Seal | Multiple O-ring / Packing arrangement |
| Disc Options | Standard ductile iron, Ni-plated, Epoxy coated |
Choosing our butterfly valve translates into tangible benefits for your operation. You achieve reduced downtime thanks to the durable materials and reliable sealing. The low lifecycle cost stems from minimal maintenance needs and extended service intervals. Furthermore, its excellent flow characteristics minimize pressure drop, leading to energy savings in pumped systems. For engineers, the standardized design simplifies specification and sourcing.
Our commitment to quality is backed by an ISO9001 certification, ensuring consistent manufacturing excellence. With an annual export value ranging between US$1 Million to US$1.5 Million, Shanghai Zhibang has established a strong presence in key markets across North America, South America, Europe, Asia, Africa, and Oceania. This global reach is supported by efficient logistics from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing. We invite you to experience the reliability of our valves. Contact us today to discuss your specific requirements, request a detailed quotation, or explore customized options for your project.
Frequently Asked Questions (FAQ)
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Q: What is the main advantage of a DIN 3202 standard valve?
A: The DIN 3202 standard specifies precise dimensions for face-to-face lengths and flange connections. This ensures perfect interchangeability with other compliant valves and seamless integration into piping systems designed to European norms, reducing installation complexities. -
Q: Why is a 316 stainless steel stem important?
A: 316 stainless steel contains molybdenum, which significantly enhances its corrosion resistance, particularly against pitting and crevice corrosion in chloride-containing environments (e.g., seawater, certain chemicals). This makes the stem more durable and reliable than standard 304 SS or carbon steel stems. -
Q: When should I choose the PTFE seat option?
A: The PTFE seat is highly recommended for applications involving corrosive fluids, high-purity media, or where a very tight seal with low friction is required. It is suitable for a broad spectrum of chemicals and offers a wider temperature range compared to many elastomeric seats. -
Q: Can this valve be used for throttling control?
A: While butterfly valves can be used for throttling, their flow characteristics are best suited for on/off service or moderate throttling. For precise control, pairing the valve with a modulating electric or pneumatic actuator is recommended. The disc design and seat material influence the suitability for throttling. -
Q: What other seat materials are available?
A: Besides PTFE, other seat materials like EPDM, NBR (Nitrile), or Viton® may be available upon request. The choice depends on the fluid's chemical compatibility, temperature, and pressure requirements. -
Q: Is the valve suitable for potable water applications?
A: With appropriate material certifications (e.g., for the body coating and seat) and compliance with relevant drinking water standards (like KTW/W270), it can be configured for potable water. Please specify this requirement for a tailored solution. -
Q: What types of actuators can be fitted?
A: The valve is designed with a standardized mounting interface compatible with manual gearboxes, as well as electric, pneumatic (double-acting or spring-return), and hydraulic actuators from major brands. Actuators are typically sourced separately or supplied as a complete package. -
Q: What is your lead time and packaging?
A: Lead times vary based on order quantity and specifications. Standard sizes are often available from stock. Valves are typically packaged in wooden cases or pallets for safe ocean or air freight transport, ensuring they arrive in perfect condition.
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