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Help CenterMarine Check Valve, Max 425℃, PN64, DN100, Carbon Steel, Flanged Connection
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Shanghai Zhibang Valve Manufacture Co., Ltd., with over 8 years of experience since 2016, proudly offers a high-performance Marine Check Valve designed for demanding marine and industrial applications. This valve is engineered to handle extreme conditions up to 425°C and PN64 pressure, featuring a robust carbon steel body and flanged connection. As a certified ISO9001 manufacturer, we ensure each valve meets stringent quality standards, delivering reliable backflow prevention and long service life. Our global export network covering North America, Europe, Asia, and beyond testifies to the trust our customers place in our products.
The DN100 (4-inch) bore size makes this check valve ideal for medium-flow piping systems in shipbuilding, offshore platforms, power plants, and petrochemical facilities. The swing disc design minimizes pressure drop while providing tight sealing, even under pulsating flow conditions. Whether you need a standard model or a customized solution, our engineering team is ready to support your specific requirements.
Key Features & Benefits
- High Temperature Resistance: Rated for continuous operation up to 425°C, suitable for steam, hot gases, and high-temperature liquids.
- High Pressure Capability: PN64 (64 bar / 928 psi) ensures reliable sealing under severe pressure conditions.
- Durable Carbon Steel Construction: Provides excellent strength, wear resistance, and longevity in corrosive marine environments (coatings available for enhanced protection).
- Flanged Connection: Easy installation and maintenance; compatible with standard flanges (RF, FF, or RTJ as required).
- Low Pressure Drop: Disc design reduces flow resistance, saving energy in pumping systems.
- Versatile Application: Suitable for water, oil, gas, steam, and various non-aggressive media.
- Compliance & Certification: Manufactured under ISO9001 quality management system; other certifications (e.g., CCS, ABS) available upon request for marine classification.
Technical Specifications
| Parameter | Detail |
|---|---|
| Valve Type | Swing Check Valve (design customizable) |
| Body Material | Carbon Steel (WCB, LCB or WCC optional) |
| Trim Material | Stainless Steel (13Cr, 304, 316 optional) |
| Seal Material | Metal-to-metal or soft-seat (PTFE, PEEK optional) |
| Connection | Flanged: RF, FF, RTJ (ASME B16.5 or EN 1092-1) |
| Pressure Rating | PN64 (Class 600 equivalent) |
| Size | DN100 (4 inches) |
| Temperature Range | -29°C to +425°C (depending on trim) |
| Design Standard | GB/T 12236, API 6D or ASME B16.34 (customizable) |
| Face-to-Face | Per API 594 or ISO 5752 (short or long pattern) |
Why Choose Shanghai Zhibang Valve?
- ISO9001 Certified: Our production processes are audited and compliant with international quality standards.
- Global Export Experience: Annual export value US$1–1.5 Million to over 20 countries across 6 continents (North America, South America, Europe, Asia, Africa, Oceania).
- Flexible Shipping Ports: Seamless logistics from Shanghai, Guangzhou, Hong Kong, and Beijing.
- Customization Capabilities: We offer tailored solutions for special materials, coatings, actuation, and third-party inspections.
- Responsive After-Sales Support: Technical documentation, spare parts, and on-site troubleshooting available.
With a dedicated quality control team and advanced CNC machining centers, every valve undergoes hydrostatic and pneumatic testing before shipment. Our Marine Check Valve is built to withstand the harshest marine environments, ensuring minimal downtime and maximum safety for your operations. Contact us now to request a quote or technical drawing – we are committed to delivering excellence.
Frequently Asked Questions (FAQ)
Q1: What is the maximum operating temperature for this check valve?
A: The valve can handle temperatures up to 425°C continuously. For higher temperatures, we recommend using alternative materials like stainless steel or special alloys – please consult our engineering team.
Q2: Can this valve be used for seawater applications?
A: Yes, but the carbon steel body requires appropriate anti-corrosion coating (e.g., epoxy or zinc-rich primer). For long-term seawater exposure, we suggest upgrading to stainless steel or duplex body material – available upon request.
Q3: What is the disc type – swing or lift?
A: The standard design is swing check (single or double disc). A lift check configuration is also possible for vertical installations – please specify your requirements.
Q4: Do you provide certificates such as CCS, ABS, or BV?
A: Yes, third-party marine classification certifications (e.g., CCS, ABS, DNV, BV) can be arranged at an additional cost and lead time. Our standard manufacturing is ISO9001 certified.
Q5: What is the pressure rating PN64 equivalent in Class?
A: PN64 corresponds approximately to Class 600 (PN63 is Class 600; PN64 is very close). We can also manufacture to ASME Class 600 directly if required.
Q6: How do you ensure tight sealing at high temperatures?
A: We use metal-to-metal sealing with heat-treated alloy seats, ensuring minimal leakage even at 425°C. Optional soft inserts (PTFE/graphite) are available for lower temperature ranges.
Q7: Can I get a sample or a small quantity for trial?
A: Absolutely. We accept small trial orders and custom samples. Lead time for samples is typically 15–25 days after drawing confirmation.
Q8: What is the warranty policy?
A: We offer a standard 12-month warranty from the date of shipment against manufacturing defects. Extended warranty up to 24 months is available upon negotiation.
For more detailed specifications, engineering drawings, or to discuss your unique project requirements, please contact our sales team. Shanghai Zhibang Valve Manufacture Co., Ltd. – Your reliable partner for marine and industrial flow control solutions.
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