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As a dedicated manufacturer of industrial valves since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium DIN 3202 Pneumatic Butterfly Valve. Engineered for reliability and precise flow control in demanding applications, this valve combines robust construction with advanced pneumatic actuation. We understand the critical need for traceability and quality assurance in process industries, which is why every valve is supplied with a comprehensive Full Mill Test Report (MTR), providing complete material certification and peace of mind. Our commitment to excellence, backed by ISO9001 certified manufacturing processes, ensures you receive a component that integrates seamlessly into your systems, enhancing operational efficiency and safety.
This pneumatic butterfly valve is designed to meet the rigorous DIN 3202 standard, ensuring dimensional interchangeability and reliable performance across a wide spectrum of industrial applications. Its core functionality lies in the precise quarter-turn operation facilitated by a high-performance pneumatic actuator, allowing for rapid opening and closing or precise throttling control when paired with positioners. The valve's construction prioritizes durability and long service life, even in challenging environments involving various media, pressures, and temperatures.
Key Features and Technical Advantages:
- Superior Sealing Performance: The valve features a precision-machined disc and a resilient seat (options include EPDM, PTFE, NBR, and Viton) that ensures bubble-tight shut-off, minimizing leakage and product loss.
- Robust Actuation: Equipped with a double-acting or spring-return pneumatic actuator, the valve offers fail-safe operation (open or close) in case of air supply loss, which is crucial for safety-critical processes.
- Corrosion and Wear Resistance: Available in a variety of material combinations like carbon steel with stainless steel trim or full stainless steel construction, the valve withstands corrosive fluids, abrasives, and high temperatures.
- Low Torque Operation: The streamlined disc design requires minimal operating torque, reducing the size and cost of the required pneumatic actuator and ensuring smooth, reliable operation.
- Easy Installation and Maintenance: The compact wafer or lug design allows for easy installation between pipe flanges without needing nuts on both sides, saving space and labor. The seat is often replaceable without removing the valve body from the line.
- Versatile Configuration: Valves can be configured with limit switches, solenoid valves, positioners, and manual overrides, offering flexibility for automation and control system integration.
Technical Specifications at a Glance:
| Parameter | Specification / Options |
| Design Standard | DIN 3202 |
| Connection Standards | DIN, ANSI, JIS, BS (Flanges) |
| Size Range (Nominal Diameter) | DN40 to DN1200 (1.5" to 48") |
| Pressure Rating (PN) | PN6, PN10, PN16, PN25 |
| Body Material | Cast Iron (GG25), Ductile Iron (GGG40), Carbon Steel (WCB), Stainless Steel (CF8, CF8M, CF3, CF3M) |
| Disc Material | Stainless Steel (304, 316, 316L), Duplex Stainless Steel |
| Seat Material | EPDM, PTFE, NBR, Viton (FKM) |
| Stem Material | Stainless Steel (304, 316, 17-4PH) |
| Operating Temperature | Depends on seat material: EPDM (-20°C to +120°C), PTFE (-30°C to +200°C) |
| Actuator Air Supply | Standard: 4-7 bar (58-102 psi) |
| Actuator Options | Double Acting, Spring Return (Fail-Close or Fail-Open) |
| Accessories | Limit Switches, Solenoid Valves, Positioners, Filter Regulators, Manual Override |
Benefits for Your Operations: Integrating our DIN 3202 Pneumatic Butterfly Valve into your system delivers tangible benefits. You achieve precise and automated flow control, reducing manual intervention and improving process consistency. The reliable sealing enhances system integrity, preventing costly leaks and ensuring environmental compliance. The durable construction translates to lower total cost of ownership through reduced maintenance needs and extended service intervals. Furthermore, the included Full MTR simplifies audit trails, quality checks, and ensures material compliance for regulated industries like chemical processing, water treatment, and power generation.
Shanghai Zhibang Valve has established a strong global presence, with exports reaching an annual value of US$1 Million to US$1.5 Million across diverse markets including North America, Europe, Southeast Asia, and Africa. Our products are shipped from major ports like Shanghai, Guangzhou, and Hong Kong, ensuring efficient logistics. Our ISO9001 certification is a testament to our systematic approach to quality management, from raw material sourcing to final inspection. When you choose our valve, you are not just buying a component; you are partnering with a reliable manufacturer committed to supporting your project's success with proven quality, comprehensive documentation, and a valve built to perform. Contact us today to discuss your specific requirements and experience the Zhibang difference in fluid control solutions.
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 that specifies the face-to-face dimensions and general requirements for butterfly valves. Valves conforming to this standard ensure dimensional interchangeability with other DIN 3202 compliant valves and proper fit between standard pipeline flanges, simplifying procurement and installation.
Q2: Can this pneumatic butterfly valve be used for throttling (flow control) applications, or is it only for on/off service?
A2: Yes, it is suitable for both on/off and throttling services. For precise throttling control, we recommend pairing the valve with an electro-pneumatic positioner, which receives a control signal (e.g., 4-20mA) and precisely modulates the air to the actuator to position the disc at any desired angle.
Q3: What does the "Full Mill Test Report (MTR)" include, and why is it important?
A3: The Full MTR is a certificate from the material mill that provides detailed chemical composition and mechanical properties (like tensile strength, yield strength, elongation) for the specific batch of material used in the valve's pressure-containing parts (body, disc, stem). It is crucial for quality traceability, material verification for specific service conditions, and is often a mandatory requirement for projects in oil & gas, chemical, and power industries.
Q4: What are the main differences between double-acting and spring-return pneumatic actuators?
A4: A double-acting actuator requires air pressure to move the valve to both the open and closed positions. A spring-return (single-acting) actuator uses air pressure to move the valve in one direction and a built-in spring to return it to its default position (fail-open or fail-close) upon air supply failure. Spring-return is chosen for safety-critical fail-safe functions.
Q5: What media is this valve suitable for?
A5: The suitability depends on the selected materials. With standard EPDM seats and carbon steel body, it handles water, air, and neutral gases. With stainless steel body/disc and PTFE or Viton seats, it can handle a wide range of chemicals, oils, fuels, and corrosive media. Always confirm material compatibility with your specific media.
Q6: Do you offer custom configurations, such as different flange standards or special coatings?
A6> Yes, we offer customization. Flanges can be manufactured to ANSI, JIS, or other standards upon request. Special coatings like epoxy or rubber lining for corrosion protection can also be provided. Please provide your detailed specifications for a quotation.
Q7: What accessories are typically needed for a complete automated valve package?
A7: A typical package includes the valve, pneumatic actuator, and may include a solenoid valve (for on/off control), a filter-regulator-lubricator (FRL) unit to clean and regulate air supply, limit switches (to signal valve position), and a manual override for emergency operation.
Q8: What is your typical lead time for these valves?
A8: Lead time varies based on size, material, and configuration. Standard configurations are often available from stock or have shorter production cycles. For large sizes or special materials, lead time will be longer. Please inquire with your specific requirements for an accurate delivery schedule.
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