Forged Steel Marine Gate Valve For Offshore Platform DN15-DN200 High Pressure PN100/PN160
Product Spotlights
As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable fluid control solutions for demanding offshore and marine environments. Our Forged Steel Marine Gate Valves are engineered to deliver exceptional performance, durability, and safety in high-pressure applications on offshore platforms, FPSOs, and various marine vessels. With an annual export value reaching up to US$1.5 million and a strong presence across global markets from North America to Southeast Asia, we understand the critical need for valves that can withstand harsh conditions and ensure operational continuity.
Forged from high-grade steel alloys, these gate valves offer superior mechanical strength and resistance to impact, making them ideal for the challenging conditions encountered offshore. The compact and sturdy design minimizes the risk of leakage and structural failure under high pressure and corrosive atmospheres. Key features include:
- Superior Material Integrity: The forging process eliminates internal voids and inclusions, resulting in a homogeneous grain structure that enhances the valve's pressure containment capability and fatigue resistance.
- High-Pressure Design: Specifically engineered for PN100 (Class 600) and PN160 (Class 900) ratings, these valves are built to manage high-pressure flows in critical systems like seawater cooling, firefighting, ballast, and fuel lines.
- Corrosion & Erosion Resistance: Available in materials like ASTM A105 carbon steel, F304/F316 stainless steel, and with optional hardened trim (e.g., Stellite), they resist corrosion from seawater, chemicals, and erosion from abrasive media.
- Bidirectional Sealing: The parallel slide or wedge gate design provides reliable sealing in both flow directions, a crucial feature for systems where pressure reversal can occur.
- Flexible Operation: Offered with standard handwheel operation, bevel gearboxes for high-torque applications, or automated with electric/pneumatic/hydraulic actuators for remote control integration.
- Low Maintenance: The robust construction and quality sealing surfaces reduce the frequency of maintenance, lowering total cost of ownership.
Detailed Technical Specifications:
| Parameter | Specification |
|---|---|
| Size Range | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN150, DN200 (1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", 4", 6", 8") |
| Pressure Rating | PN100 (Class 600) / PN160 (Class 900) |
| Design & Test Standards | API 600, API 602, BS 5352, ISO 10434 Fire Safe Design per API 607/6FA (Optional) |
| Body & Bonnet Material | Forged Steel: A105, F304, F316, F321, F347, Duplex Steel |
| Trim Material (Seat/Disc/Stem) | Standard: 13% Cr Stainless Steel Optional: Stellite Hardfacing, Alloy 20, Monel |
| End Connection | Flanged: RF, RTJ (ASME B16.5, EN 1092-1) Screwed: NPT, BSPT, BSPP |
| Operating Temperature | -29°C to 425°C (-20°F to 800°F) Standard Extended range available upon request |
| Packing & Gasket | Graphite, PTFE, Flexible Graphite (Fire Safe options) |
| Operation | Handwheel, Bevel Gear (Ratio 2:1 to 100:1), Electric/Pneumatic Actuator |
Benefits for Your Offshore Operations:
- Enhanced Safety: The forged steel construction and high-pressure rating ensure integrity in critical safety systems, protecting assets and personnel.
- Reduced Downtime: High reliability and durability lead to fewer failures and unscheduled maintenance stops.
- Long Service Life: Resistance to corrosion, erosion, and high-cycle fatigue extends valve life even in aggressive seawater environments.
- Global Compliance: Manufactured according to international API, BS, and ISO standards, facilitating approval for use in global projects.
- Cost-Effectiveness: While offering premium performance, our competitive pricing as a direct manufacturer provides excellent value.
With ISO9001-certified manufacturing processes and a track record of supplying valves to major offshore projects worldwide, Shanghai Zhibang Valve stands as a trusted partner. Our products are shipped from major ports like Shanghai, Guangzhou, and Hong Kong, ensuring efficient logistics to your global sites—from the North Sea to the Gulf of Mexico and Southeast Asia. We encourage you to contact us for detailed quotations, technical drawings, or to discuss custom requirements. Let our forged steel marine gate valves be the reliable shut-off solution for your next offshore platform project.
Frequently Asked Questions (FAQ):
-
Q: What are the main advantages of a forged steel valve over a cast steel valve for marine use?
A: Forged steel valves have a denser, more uniform grain structure, offering higher strength, better impact resistance, and improved integrity under high pressure and thermal cycling—critical for the dynamic loads on offshore platforms. -
Q: Can these valves be used with seawater and other corrosive fluids?
A: Yes. We offer them in stainless steel (F304/F316) or with corrosion-resistant alloy trim specifically to handle seawater, chlorides, and other corrosive media common in marine systems. -
Q: Are electric or pneumatic actuators available for remote operation?
A: Absolutely. We can supply the valves with various electric, pneumatic, or hydraulic actuators from reputable brands, tailored to your control system requirements. -
Q: Do you provide fire-safe certified versions?
A: Yes, fire-safe design per API 607/6FA standards is available as an option, featuring metal-seated design and fire-resistant packing/gaskets. -
Q: What is the typical delivery lead time for an order?
A: For standard sizes and materials, lead time is approximately 4-6 weeks. Custom configurations may require additional time, which we will confirm upon order review. -
Q: What documentation is provided with the valves?
A: Each shipment includes a Material Test Certificate (MTC), hydrostatic test report, dimensional drawing, and operation manual. Full certification packages are available upon request. -
Q: Can you customize the valve face-to-face dimensions or flange standards?
A: Yes, we offer customization for non-standard face-to-face lengths and can manufacture flanges to various standards like ASME, EN, JIS, etc., based on your project specifications. -
Q: How do I select between PN100 (Class 600) and PN160 (Class 900)?
A: Selection depends on your system's maximum working pressure and design code. PN160 is for higher pressure applications. Our technical team can assist you based on your specific pressure-temperature conditions.
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