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Help CenterPN64 Marine High Pressure Reducing Valve Used in Offshore Oil & Gas Systems, Forged Steel, DNV LR Approved
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Shanghai Zhibang Valve Manufacture Co., Ltd has been a reliable manufacturer of high-quality industrial valves since 2016. Our PN64 Marine High Pressure Reducing Valve is specifically engineered for demanding offshore oil and gas systems. Made from premium forged steel and approved by DNV and LR, this valve delivers exceptional performance under extreme pressure and corrosive marine environments. With an annual export value exceeding US$1 million, we have supplied valves to markets across North America, Europe, Southeast Asia, and beyond, earning trust through consistent quality and on-time delivery.
This pressure reducing valve is designed to precisely control and reduce high inlet pressure to a stable lower outlet pressure, ensuring safe and efficient operation of downstream equipment. The robust forged steel construction resists seawater corrosion, high vibrations, and pressure surges common in offshore platforms and FPSO vessels. Available in various sizes and connection types, the valve can be customized to meet specific project requirements.
Key Features & Technical Specifications
- Material: Forged steel (ASTM A105 / A350 LF2 optional) for superior strength and durability.
- Pressure Rating: PN64 (64 bar) – suitable for high-pressure offshore systems.
- Temperature Range: Standard -20°C to +200°C, with extended range available upon request.
- Certifications: DNV and LR type approval, plus ISO9001 quality management system.
- Design: Balanced piston or diaphragm-actuated design ensures accurate pressure regulation.
- Sealing: Metal-to-metal or soft seal options for bubble-tight shut-off.
- Corrosion Protection: Internal and external coating resistant to salt spray and H2S (optional).
- Maintenance: Modular design allows easy access to internal components for quick servicing.
Technical Parameters (Typical)
| Parameter | Value |
|---|---|
| Nominal Diameter | DN15 – DN300 (1/2" – 12") |
| Inlet Pressure Max | 64 bar (PN64) |
| Outlet Pressure Range | 1 – 35 bar (adjustable spring) |
| End Connections | Flanged (RF/RTJ) or Butt-weld |
| Body Material | Forged Steel A105 / A350 LF2 |
| Trim Material | Stainless Steel 316 / Duplex (optional) |
| Seat Leakage Class | Class VI (soft seal) / Class V (metal) |
Advantages for Your Offshore Operations
- Enhanced Safety: The valve prevents overpressure downstream, protecting pipelines and equipment from damage.
- Reliable Performance: Forged steel body withstands thermal cycling and mechanical stress, reducing maintenance frequency.
- Global Compliance: DNV and LR approval ensure acceptance by major classification societies for offshore projects worldwide.
- Customizable Options: Available with different trim materials, actuator types (pneumatic, electric, hydraulic), and special coatings for sour service (NACE MR0175).
- Cost Efficiency: Long service life and easy maintainability lower total cost of ownership.
Since 2016, Shanghai Zhibang Valve has exported valves worth over US$1 million annually to more than 15 countries, including North America, Europe, the Middle East, and Southeast Asia. Our factory is ISO9001 certified, and every PN64 marine reducing valve undergoes rigorous hydrostatic, seat leakage, and functional testing before shipment. We ship from Shanghai, Guangzhou, Hong Kong, and Beijing ports, ensuring flexible logistics for global customers. Contact us today to request a quote or discuss your specific offshore pressure reducing requirements. Our team of engineers is ready to provide technical support and customized solutions.
Frequently Asked Questions
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What is the difference between PN64 and PN100?
PN64 indicates a nominal pressure rating of 64 bar, while PN100 is 100 bar. Our valve is designed for 64 bar maximum inlet pressure; for higher pressures, we can provide PN100 or custom ratings. -
Is the valve suitable for sour gas (H2S) service?
Yes, we offer optional NACE MR0175 compliant materials such as Inconel or Duplex stainless steel trim. Please specify the requirement when ordering. -
What outlet pressure ranges are available?
Standard outlet pressure range is 1–35 bar, adjustable via spring. For other ranges, a different spring or pilot can be supplied. -
Can the valve be used for steam or water?
While designed for oil and gas, it can be used for water and steam if the temperature and pressure are within specifications. For steam, we recommend a dedicated steam reducing valve. -
What certifications are included with the valve?
Each valve comes with a material certificate, pressure test report, and DNV/LR type approval certificate. ISO9001 factory certificate is available upon request. -
Is the valve bidirectional?
Standard design is unidirectional (flow direction marked). Bidirectional versions are available for special applications. -
What is the typical lead time?
Standard sizes (DN15–DN150) are usually shipped within 4–6 weeks. Larger sizes or custom configurations may take 8–12 weeks. -
Do you provide installation and maintenance manuals?
Yes, we supply a detailed I&M manual with every valve, and our technical team is available for remote support.
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