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Help CenterMarine Non-Return Valve PN100, Rising Disc Type, Forged Steel, Flanged Connection
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Shanghai Zhibang Valve Manufacture Co., Ltd. has been a reliable manufacturer of high-performance industrial valves since 2016. Our Marine Non-Return Valve PN100, Rising Disc Type, Forged Steel, Flanged Connection is engineered to withstand the demanding conditions of offshore and marine systems, ensuring reliable backflow prevention and long service life. With ISO9001-certified quality management, we deliver products that meet the rigorous standards of global maritime applications.
This valve is designed to prevent reverse flow in pipelines handling seawater, fuel, or other fluids. The rising disc mechanism provides a clear visual indication of the valve position, simplifying maintenance and inspection. Constructed from high-strength forged steel, it offers excellent corrosion resistance and pressure containment, making it ideal for PN100 (100 bar) systems.
Our flanged connection design ensures easy installation and leak-tight performance. Each valve undergoes strict pressure testing and material verification to ensure compliance with international standards. Whether used in ballast systems, cooling water lines, or emergency shutdown systems, this valve delivers consistent operation in harsh marine environments.
Product Features & Benefits
- Rising Disc Design – Provides a visual indicator of open/close status, allowing operators to quickly verify valve position without disassembly.
- Forged Steel Body – Offers superior strength and durability compared to cast alternatives; resists cracking under high pressure and thermal stress.
- PN100 Pressure Rating – Suitable for applications up to 100 bar (1450 psi), meeting the requirements of high-pressure marine systems.
- Flanged Connections – Conforms to common flange standards (e.g., DIN, ANSI), simplifying integration with existing piping.
- Corrosion Resistance – Internal components are treated or coated to withstand saltwater and other corrosive media.
- Low Maintenance – Simple design with few moving parts reduces the need for frequent servicing.
- Compliance – Manufactured under ISO9001-controlled processes, ensuring consistent quality and traceability.
Technical Specifications
| Parameter | Value |
| Pressure Rating | PN100 (100 bar / 1450 psi) |
| Body Material | Forged Steel (A105 or equivalent) |
| Disc Type | Rising Disc |
| Connection | Flanged (RF/FF) |
| Size Range | DN15 – DN600 (customizable) |
| Operating Temperature | -20°C to +350°C (dependent on material) |
| Design Standard | Available upon request (API 6D, BS EN 12334, etc.) |
Customer Benefits
By choosing our marine non-return valve, you gain:
- Reduced downtime due to reliable backflow prevention and easy visual inspection.
- Longer service life in corrosive environments, lowering total cost of ownership.
- Compatibility with global piping systems through standard flanged connections.
- Flexibility in size and material options to match specific project requirements.
Shanghai Zhibang Valve Manufacture Co., Ltd. has exported over US$1 million to US$1.5 million annually to markets worldwide, including North America, Europe, the Middle East, and Southeast Asia. Our valves are trusted by shipbuilders, offshore platforms, and marine engineering firms. We provide comprehensive after-sales support and fast delivery from our Shanghai, Guangzhou, Hong Kong, Beijing ports. Contact us today for a quotation or technical consultation – we are committed to delivering excellence for your marine applications.
Frequently Asked Questions
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Q: What is the main function of this valve?
A: It prevents reverse flow in piping systems, protecting pumps and equipment from backflow damage. The rising disc allows visual confirmation of valve position. -
Q: Is this valve suitable for seawater?
A: Yes, the forged steel body can be supplied with appropriate coatings or internal lining to resist seawater corrosion. Confirm your media when ordering. -
Q: What flange standards are available?
A: We can produce flanges according to DIN, ANSI, JIS, or other standards upon request. Standard flanged connection is RF (raised face) unless specified. -
Q: Can I get a custom size or pressure rating?
A: We offer customized sizes (DN15 – DN600) and pressure ratings. Please provide your requirements for a tailored solution. -
Q: What certifications do you hold?
A: Our manufacturing facility is ISO9001 certified. Specific product certifications (e.g., API, CE) can be arranged subject to order conditions. -
Q: How do I confirm the valve is open or closed?
A: The rising disc protrudes from the top of the valve when open and retracts when closed, providing a clear visual indicator. -
Q: What is the lead time for typical orders?
A: Lead time depends on specifications and quantity. Standard sizes are usually shipped within 15-30 working days. Contact us for exact delivery schedule. -
Q: Do you provide installation and maintenance instructions?
A: Yes, each valve comes with a manual covering installation, operation, and maintenance procedures. Our technical team is also available for remote support.
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