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Help CenterCast Steel Body Triple Eccentric Butterfly Valve, PN16 Pressure Rating
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As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in delivering high-performance industrial flow control solutions. Our Cast Steel Body Triple Eccentric Butterfly Valve with PN16 pressure rating is engineered for demanding applications where reliable shut-off and durability are paramount. With years of experience exporting to global markets including North America, Europe, and Southeast Asia, we understand the critical requirements for valves in various industrial settings. This valve represents our commitment to combining robust construction with advanced sealing technology, offering a superior alternative to traditional butterfly valves in medium-pressure pipeline systems.
Core Product Features & Technical Advantages:
- Triple Eccentric Design: The innovative triple offset geometry ensures that the disc only contacts the seat at the final moment of closure, eliminating sliding friction and wear during operation. This design provides a true metal-to-metal seal, significantly enhancing service life and leak-tight performance.
- Robust Cast Steel Construction: The valve body is manufactured from high-grade cast steel, offering excellent mechanical strength and resistance to deformation under pressure. This material choice ensures reliable operation in a wide range of industrial environments, including those with moderate corrosivity.
- PN16 Pressure Rating: Rated for a nominal pressure of 16 bar, this valve is suitable for a broad spectrum of medium-pressure applications in water supply, HVAC, power generation, and general industrial processes.
- Versatile Sealing Options: While featuring a standard metal seat for high-temperature capability, optional soft seat materials (available upon request) can be provided for applications requiring bubble-tight shut-off at lower temperatures.
- Multiple Actuation Compatibility: The valve is designed to be easily fitted with various actuators, including manual lever, gear operator, electric actuator, or pneumatic actuator, providing flexibility for different levels of automation.
- Bi-Directional Sealing: The triple eccentric design allows for effective sealing in both flow directions, a critical feature for many pipeline layouts.
- Low Torque Operation: The eccentric design reduces operating torque compared to concentric butterfly valves, allowing for smaller, more cost-effective actuators and easier manual operation.
- Fire-Safe Design Potential: The metal seat construction inherently provides a degree of fire safety, and the design can be adapted to meet specific fire-safe standards if required.
Detailed Technical Specifications:
| Parameter | Specification |
|---|---|
| Design Standard | API 609, MSS SP-68, EN 593 |
| Pressure-Temperature Rating | PN16 (16 bar) |
| Body Material | Cast Steel (WCB, LCB, etc.) |
| Disc Material | Cast Steel or Stainless Steel |
| Stem Material | Stainless Steel (410/304/316) |
| Seat Material | Standard: Metal (SS/Stellite); Optional: PTFE, Reinforced Elastomers |
| Connection Standards | Wafer: EN 1092-2, DIN; Lug/Double Flange: ANSI B16.5, EN 1092-1 |
| Face-to-Face Dimension | Per API 609 or EN 558 Series |
| Leakage Class | Metal Seat: API 598/EN 12266-1 A; Soft Seat: API 598/EN 12266-1 A (Zero Leakage) |
| Operating Temperature Range | Standard: -29°C to +425°C (Metal Seat); Customizable for wider ranges |
Benefits for Your Operations:
- Extended Service Life & Reduced Maintenance: The wear-free operation of the triple eccentric design minimizes downtime and maintenance costs over the valve's lifetime.
- Enhanced System Safety & Reliability: The robust metal seal provides dependable shut-off, preventing costly leaks and process interruptions in critical systems.
- Wide Application Compatibility: Suitable for water, steam, oil & gas, chemical processing, and power generation applications within its pressure-temperature envelope.
- Cost-Effective Solution: Offers performance comparable to gate valves or ball valves in many services but often at a lower installed cost and with a more compact footprint.
- Global Supply & Support: Manufactured in our ISO9001-certified facility in Shanghai, we ensure consistent quality and support export to major ports worldwide, including Shanghai, Guangzhou, Hong Kong, and Beijing.
Our commitment to quality is backed by our ISO9001 certification and proven track record of supplying valves to diverse markets across North America, South America, Europe, Asia, Africa, and Oceania. With an annual export value consistently between US$1-1.5 million, we have established ourselves as a reliable partner for industrial clients worldwide. The Cast Steel Triple Eccentric Butterfly Valve PN16 embodies our dedication to providing durable, high-performance valves that meet international standards. For detailed quotations, specific material certifications, or to discuss customization options for your project requirements, please contact our sales team. Experience the Zhibang difference in flow control reliability.
Frequently Asked Questions (FAQ):
Q1: What is the main advantage of a triple eccentric design over a standard butterfly valve?
A: The primary advantage is the elimination of sliding friction between the disc and seat. In a triple eccentric valve, the disc only contacts the seat at the final point of closure, drastically reducing wear. This results in a much longer service life, especially in throttling or frequent operation, and enables a reliable metal-to-metal seal suitable for higher temperatures.
Q2: Can this PN16 valve be used for steam service?
A: Yes, the standard metal-seated version is suitable for saturated steam service within its pressure-temperature rating (PN16). It is crucial to verify the specific temperature and pressure conditions of your application against the valve's rating chart. For superheated steam, please consult our engineering team for material suitability.
Q3: What are the available end connection types?
A: We typically offer three main types: Wafer (for installation between two flanges), Lug (bolted through the valve body, allowing dead-end service), and Double Flange (with integral flanges on both ends). The choice depends on your piping system design and maintenance requirements.
Q4: Is this valve suitable for bi-directional flow?
A: Absolutely. The triple eccentric design provides effective sealing against pressure from either direction, making it an excellent choice for applications where flow direction may change or for isolation in systems with potential backflow.
Q5: What actuator options are compatible?
A: The valve is designed with a standard square or keyway stem to accommodate a wide range of actuators. We can supply or recommend manual levers, gear operators, electric actuators, or pneumatic actuators (double-acting or spring-return) based on your control and automation needs.
Q6: Do you offer different seat materials?
A: Yes. While the standard configuration features a metal seat (e.g., stainless steel) for high-temperature and fire-safe capability, we can provide optional soft seats made from materials like PTFE or reinforced elastomers for applications requiring bubble-tight shut-off at lower temperatures. This is a customizable feature.
Q7: What is the typical delivery lead time?
A: Lead times vary based on order quantity, specific material requirements, and actuation options. For standard configurations, we often maintain some inventory. Please contact us with your detailed specifications for an accurate delivery schedule. We ship from major Chinese ports including Shanghai and Guangzhou.
Q8: Can you provide documentation like material test reports (MTRs) or certification?
A> As an ISO9001-certified manufacturer, we can provide comprehensive documentation packages upon request. This can include material test reports, dimensional inspection reports, and pressure test certificates per API 598 or EN 12266-1 standards. Please specify your documentation requirements during the inquiry process.
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