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Home > Industrial Equipment & Components > Valve > Gate Valve > DN15-DN200 Forged Steel Marine Gate Valve For Offshore Platform 16MPa Pressure Rating NDT Tested

DN15-DN200 Forged Steel Marine Gate Valve For Offshore Platform 16MPa Pressure Rating NDT Tested

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Product Spotlights

Forged steel marine gate valve for offshore platforms, rated 16MPa. Features DN15-DN200 sizes, mandatory NDT testing for integrity, and robust construction per API standards. Offers superior strength, corrosion resistance for seawater systems, and enhances safety with reliable shut-off in critical applications. ISO9001 manufacturer with global export experience.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Forged Steel

Application:

Other, Offshore Platform Marine Systems

Size Range:

DN15 to DN200

Contact Supplier Request Quote Chat Now

Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Material Other, Forged Steel

Application Other, Offshore Platform Marine Systems

Size Range DN15 to DN200

Pressure Rating 16MPa (PN160)

Testing Standard NDT (Non-Destructive Testing) Tested

Connection Type Flanged End (Standard)

Operation Type Handwheel (Standard)

Design Standard API 600 / API 602

Temperature Range -29°C to 425°C

Seat & Disc Material Stainless Steel

As a specialized manufacturer with a strong focus on industrial valve solutions since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance forged steel marine gate valve series. Engineered specifically for the demanding environments of offshore platforms, this valve is built to deliver reliable shut-off under extreme pressure conditions up to 16MPa. Our commitment to quality, backed by ISO9001 certification, ensures every valve meets the rigorous standards required for marine and offshore applications, providing our global clients in North America, Southeast Asia, Europe, and beyond with dependable fluid control solutions.

The DN15-DN200 Forged Steel Marine Gate Valve represents a culmination of precision engineering and robust construction. Its primary function is to provide a tight, bubble-tight seal for on/off service in critical piping systems on offshore platforms, including seawater cooling, firefighting, ballast, bilge, and fuel oil lines. The valve's forged steel body offers superior mechanical strength and resistance to shock loads compared to cast alternatives, a crucial factor in the dynamic marine environment.

Key Technical Features & Design Advantages:

Superior Pressure Integrity: Designed for a 16MPa (PN160) pressure rating, the valve withstands the high-pressure demands of deep-water operations and high-pressure pumping systems.
Forged Steel Construction: The body, bonnet, and major components are forged from high-grade carbon or alloy steel. This process enhances grain structure, eliminates casting defects, and provides excellent resistance to mechanical and thermal stress.
Comprehensive NDT Testing: Each valve undergoes mandatory Non-Destructive Testing (such as Liquid Penetrant Testing or Magnetic Particle Inspection) on critical welds and surfaces. This ensures internal integrity and detects any subsurface flaws that could compromise performance.
Marine-Grade Corrosion Protection: Features specialized coatings and surface treatments suitable for saltwater atmospheres. Options include epoxy coatings, galvanizing, or other marine-grade finishes to combat corrosion.
Rising Stem Design: The outside screw and yoke (OS&Y) design provides a visual indication of valve position (open or closed) and keeps the threaded stem out of the flow path, reducing wear and corrosion.
Flexible Wedge or Solid Wedge Disc: Available in flexible wedge design for improved sealing under thermal cycling or solid wedge for general service, ensuring a reliable seal against the parallel seats.

Detailed Specifications & Configuration Options:

Parameter	Specification / Option
Size Range (Nominal Diameter)	DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200
Pressure Class	PN160 / Class 900 (16MPa @ 38°C)
Body & Bonnet Material	A105, F22, F304, F316, F51 (Duplex) - Forged
Trim Materials (Seat/Disc/Stem)	13Cr/13Cr, Stellite 6, 304 SS, 316 SS, Monel
Gasket Material	Spiral Wound (SS/F.Graphite), Ring Type Joint (RTJ)
End Connection	RF (Raised Face) Flange, RTJ (Ring Type Joint) Flange
Operation	Handwheel (Standard), Gear Operator (for sizes ≥DN80), Pneumatic/Hydraulic Actuator (Optional)
Design & Test Standards	API 600, API 602, ASME B16.34; Test: API 598, NDT per ASME Sec V

Benefits for Offshore Platform Operators:

Enhanced Safety & Reliability: The forged body and NDT testing minimize the risk of catastrophic failure, protecting personnel, assets, and the environment.
Reduced Lifecycle Cost: Durable construction and corrosion-resistant materials extend service intervals, lower maintenance frequency, and reduce total cost of ownership.
Operational Efficiency: Smooth operation even after long periods of inactivity, ensuring quick and reliable isolation when needed for maintenance or emergency shutdown.
Global Compliance: Manufactured to internationally recognized API and ASME standards, facilitating approval for use in major offshore projects worldwide.
Supply Chain Flexibility: With annual export value between US$1-1.5 Million and multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing), we ensure timely delivery to global markets.

Trust in a valve supplier with a proven track record. Our ISO9001-certified manufacturing processes, combined with nearly a decade of industry experience since 2016, guarantee consistent quality. We serve a diverse global clientele across six continents, from the North Sea to the South China Sea, demonstrating our product's adaptability and reliability. Choosing our forged steel marine gate valve means investing in a component that contributes to the safety, efficiency, and longevity of your offshore platform's critical systems. Contact us today to discuss your project specifications, request a detailed quote, or learn more about our full valve portfolio for marine applications.

Frequently Asked Questions (FAQ):

Q: Why is forged steel preferred over cast steel for this marine gate valve?
A: Forged steel offers a denser, more uniform grain structure with fewer inherent defects like porosity or inclusions. This results in higher strength, better impact resistance, and superior performance under the cyclic stresses and potential shock loads common on offshore platforms.
Q: What specific NDT methods are used, and are certificates provided?
A> Standard NDT includes Liquid Penetrant Testing (PT) on all accessible surfaces and Magnetic Particle Testing (MT) for ferromagnetic materials. Ultrasonic Testing (UT) may be applied for thicker sections. A summary NDT report or certificate of compliance is typically available upon request.
Q: Is this valve suitable for subsea applications?
A: This valve is designed for topside offshore platform piping systems. For subsea applications, valves require specialized design features (e.g., deep-sea corrosion protection, ROV interfaces). We offer subsea valve solutions; please inquire for specific requirements.
Q: Can you provide valves with different flange standards (e.g., ASME B16.5, EN1092-1)?
A: Yes. While ASME B16.5 flanges are standard, we can manufacture valves with EN (DIN), JIS, or other international flange standards to match your existing pipeline specifications. Please specify your required standard when inquiring.
Q: What is the typical lead time for an order of DN100 valves?
A: Lead time depends on material grade, trim options, and order quantity. For standard A105 body with 13Cr trim, typical production lead time is 6-8 weeks ex-works. We maintain strategic stock for some common sizes to expedite delivery.
Q: Do you offer actuated versions for remote operation?
A: Absolutely. We can fit the valve with pneumatic (double-acting or spring-return) or hydraulic actuators, along with necessary accessories like limit switches, solenoid valves, and positioners. Actuator brand and specifications can be customized.
Q: How does the valve perform with seawater or other corrosive media?
A: For seawater service, we recommend a 316 stainless steel or duplex stainless steel (e.g., F51) trim. The body exterior can be protected with high-performance epoxy or other marine-grade coatings. Material selection is crucial and will be guided by your specific media and operating conditions.
Q: What documentation accompanies the valve shipment?
A> Standard documentation includes Material Test Reports (MTRs) for pressure-containing parts, a certificate of conformance, dimensional drawing, installation & maintenance manual, and packing list. Third-party inspection and additional certifications are available.