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Help CenterDNV-GL Approved Marine Butterfly Valve, Full Compliance With API 609 Standard
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Shanghai Zhibang Valve Manufacture Co., Ltd (established in 2016) is proud to offer a high-performance Marine Butterfly Valve that is fully DNV-GL approved and in strict compliance with the API 609 standard. This valve is engineered to deliver exceptional reliability and safety in demanding marine and offshore environments. As a ISO9001 certified manufacturer, we ensure every valve undergoes rigorous quality control, providing our customers with a product they can trust for critical applications.
Our butterfly valve combines advanced engineering with robust materials to meet the stringent requirements of marine classification societies. The DNV-GL approval guarantees that the valve has been tested and verified for use on ships and offshore installations, where performance and safety are paramount. The full compliance with API 609 ensures consistent dimensional and pressure-rating standards, making it an ideal choice for seawater cooling systems, ballast water management, fire-fighting systems, and other marine piping networks.
Key Features & Technical Specifications
- DNV-GL Type Approval – The valve is certified by DNV-GL, one of the world’s leading ship classification societies, ensuring compliance with marine industry standards for safety and performance.
- API 609 Full Compliance – Manufactured to meet all requirements of API 609 (latest edition), covering design, materials, face-to-face dimensions, pressure-temperature ratings, and testing.
- Durable Construction – Available in body materials of ductile iron, carbon steel, or stainless steel; disc options include stainless steel, duplex stainless steel, or nickel‑aluminum bronze for excellent corrosion resistance in seawater.
- Bi‑directional Sealing – Precision‑machined seat provides bubble‑tight shutoff in both directions, meeting API 598 leakage requirements.
- Versatile Operation – Designed for manual worm gear, pneumatic, or electric actuator mounting, with ISO 5211 mounting flange standard for easy automation.
- Low Torque Design – Optimized disc profile reduces operating torque, extending actuator life and lowering energy consumption.
- Fire‑Safe Option – Optional fire‑safe design (API 607 / ISO 10497) available for high‑risk marine applications.
- Full Traceability – Each valve is marked with a unique serial number, material certifications, and test records for complete traceability.
| Parameter | Details |
| Size Range | 2″ – 48″ (DN50 – DN1200) — other sizes available upon request |
| Pressure Rating | Class 150 / 300 (PN10/16/25 optional) |
| Temperature Range | -20°C to +200°C (customizable for higher or lower) |
| End Connection | Wafer, Lug, or Flanged (RF / RTJ) |
| Face-to-Face Dimension | Per API 609 Table 1 & 2 (short pattern & long pattern) |
| Testing | Hydrostatic, pneumatic, seat leakage (API 598, ISO 5208) |
This marine butterfly valve is designed with ease of maintenance in mind. The liner‑less seat design allows quick replacement of the seat without special tools, reducing downtime. Our factory‑trained engineers can provide installation and commissioning support, ensuring smooth integration into your existing system.
Why Choose Shanghai Zhibang Valve?
As a dedicated manufacturer with an annual export value between US$1 million and US$1.5 million, we have shipped our valves to major ports including Shanghai, Guangzhou, Hongkong, and Beijing, serving markets across North America, South America, Europe, Southeast Asia, Africa, the Middle East, Oceania, and Asia. Our ISO9001 quality management system ensures consistent quality and on‑time delivery. Each valve is backed by a warranty and our responsive after‑sales service team.
We understand that marine applications demand uncompromising reliability. Our DNV‑GL approved butterfly valve has been installed on numerous vessels and offshore platforms, with positive feedback from shipyards and owners. Contact us today for a quotation, technical data sheet, or sample request. Let us be your trusted partner in marine valving solutions.
Frequently Asked Questions (FAQ)
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Q1: Is the DNV-GL approval valid for all sizes and pressure classes?
A: Yes, our DNV-GL type approval covers the full size range (2″ to 48″) and both Class 150 and 300 pressure classes. Additional pressure classes can be approved separately upon request. -
Q2: Can this valve be used for seawater service?
A: Absolutely. With disc options in duplex stainless steel or nickel‑aluminum bronze, and a corrosion‑resistant body coating, the valve is ideally suited for seawater, brackish water, and other corrosive marine fluids. -
Q3: What is the delivery time for standard orders?
A: For standard sizes and materials, typical lead time is 30–45 days after confirmation of order. Non‑standard materials or quick‑delivery options can be arranged – please inquire with our sales team. -
Q4: Do you provide a fire‑safe version?
A: Yes, a fire‑safe design (meeting API 607 / ISO 10497) is available as an option. This is highly recommended for fuel oil, lube oil, and other hydrocarbon services on board. -
Q5: What certificates do you supply with the valve?
A: Along with the DNV‑GL certificate, we provide material certificates (EN 10204 3.1 or 3.2), dimensional inspection report, pressure test certificate, and a declaration of compliance to API 609. ISO9001 certificate is also available. -
Q6: Can I have the valve with an electric actuator?
A: Yes, we offer pneumatic, electric, and hydraulic actuators compatible with the valve’s ISO 5211 mounting flange. Actuator sizing is done per your required torque and response time. -
Q7: What is the warranty period?
A: Our standard warranty is 12 months from the date of shipment, covering defects in materials and workmanship. Extended warranty options are available for critical projects. -
Q8: Are spare parts easily available?
A: Yes, we maintain stock of common spare parts such as seats, O‑rings, gaskets, and bolts. Spare part kits can be supplied with the valve or ordered separately for long‑term maintenance.
For further technical details or to request a quote, please contact our sales department at info@zhibangvalve.com or call +86-21-xxxx-xxxx. Our team is ready to assist you with your marine butterfly valve needs.
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