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GB/T Marine Gate Valve for Steam Systems in Shipbuilding Marine Engineering
Product Spotlights
Engineered for demanding marine steam systems, these GB/T standard gate valves offer reliable high-temperature/pressure shut-off with robust construction (cast steel/stainless steel). Features include superior sealing (metal/resilient seat), versatile operation (manual/geared/electric), full-bore flow, and easy maintenance. Designed for longevity in corrosive environments, they ensure safety, compliance, and cost efficiency for global shipbuilding and marine engineering projects.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Cast steel, stainless steel, bronze
Standard:
Other, GB/T, ISO, DIN, JIS, ANSI/ASME
Application:
Other, Steam systems
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Cast steel, stainless steel, bronze
Standard
Other, GB/T, ISO, DIN, JIS, ANSI/ASME
Application
Other, Steam systems
Pressure Rating
PN10 to PN100, Class 150 to Class 600
Connection Type
Flanged, Welded
Operation Mode
Manual handwheel, Gearbox, Electric actuator
Sealing Type
Metal seated, Resilient seated
Temperature Range
-20°C to +425°C
Size Range
DN50 to DN600 (2“ to 24“)
As a specialized manufacturer with a focus on industrial valves, Shanghai Zhibang Valve Manufacture Co., Ltd. leverages its engineering expertise to deliver reliable flow control solutions for demanding marine environments. Our GB/T Marine Gate Valves for Steam Systems are engineered to meet the rigorous standards of shipbuilding and marine engineering, offering robust performance, longevity, and safety in critical onboard applications. With ISO9001-certified manufacturing processes and a commitment to quality, we provide valves that ensure operational integrity for shipbuilders, shipyards, and marine equipment suppliers worldwide.
Our marine gate valves are designed specifically for steam service, handling high-temperature and high-pressure conditions commonly found in ship propulsion systems, auxiliary boilers, and heating circuits. The product range is developed to comply with international maritime standards while adhering to the Chinese national standard GB/T, ensuring compatibility and reliability for global projects.
Key Product Features & Technical Advantages:
- Robust Construction: Manufactured from premium-grade cast steel, stainless steel, or bronze to withstand corrosive marine atmospheres and high-temperature steam.
- Superior Sealing: Features metal-to-metal or resilient seated designs that ensure tight shut-off, preventing steam leakage and maintaining system efficiency.
- Versatile Operation: Available with manual handwheels, gear operators, or electric actuators for remote or local control, enhancing operational flexibility.
- Thermal Stability: Engineered components and selected materials maintain structural integrity and sealing performance across a wide temperature range from -20°C to +425°C.
- Easy Maintenance: Designed with a bolted bonnet or pressure seal bonnet for straightforward inspection, maintenance, and repair, reducing vessel downtime.
- Flow Efficiency: Full-bore design minimizes pressure drop across the valve when fully open, optimizing steam flow and system performance.
Detailed Technical Specifications:
| Parameter | Specification / Range |
| Design & Manufacturing Standard | GB/T, ISO, DIN, JIS, ANSI/ASME (as specified) |
| Nominal Pressure (PN) | PN10, PN16, PN25, PN40, PN63, PN100 |
| Pressure Class (ASME) | Class 150, Class 300, Class 600 |
| Nominal Diameter (DN) | DN50 to DN600 (2" to 24") |
| Connection Ends | Flanged (RF, RTJ), Butt Weld End (BWE) |
| Body Material | WCB, WCC, LCB, CF8, CF8M, C95800 |
| Stem Material | Stainless Steel (SS304, SS316), Forged Steel |
| Seat & Disc Material | 13% Cr Steel, Stellite, Alloy 20, Bronze |
| Test & Inspection | Shell Test, Seat Leakage Test (API 598/ISO 5208) |
Benefits for Your Marine Engineering Projects:
- Enhanced Safety: Reliable shut-off capability protects personnel and equipment from high-pressure steam hazards.
- Operational Reliability: Durable construction ensures long service life with minimal maintenance, even in harsh sea conditions.
- Regulatory Compliance: Valves are manufactured to meet relevant marine classification society rules (available upon request), facilitating vessel certification.
- Cost Efficiency: Reduced leakage and maintenance requirements lower the total cost of ownership over the valve's lifecycle.
- Global Supply Chain Support: With annual export values between US$1-1.5 million and shipments from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to your project site anywhere in the world.
Shanghai Zhibang Valve's established presence since 2016 and our successful penetration into diverse markets—including North America, Europe, Asia, Africa, and Oceania—stand as a testament to the quality and reliability of our marine valves. Our ISO9001 certification underpins a consistent, quality-driven manufacturing process. For your next shipbuilding or marine retrofit project, choose a valve supplier with proven export capability and technical expertise. Contact us today to discuss your specific requirements for GB/T Marine Gate Valves for Steam Systems and receive a detailed quotation.
Frequently Asked Questions (FAQ)
-
What does "GB/T" mean in the valve specification?
GB/T refers to the Chinese National Recommended Standards. For marine valves, it often covers dimensions, pressure ratings, materials, and testing methods. Our valves are manufactured to comply with relevant GB/T standards while also being compatible with international norms like ISO, ANSI, and DIN for global application. -
Are these valves suitable for saturated steam and superheated steam?
Yes, our marine gate valves are designed to handle both saturated and superheated steam services commonly found on ships. The specific material selection (e.g., higher grade cast steel or stainless steel) and pressure class will be determined based on the exact steam temperature and pressure parameters of your system. -
Can you provide valves with certifications from marine classification societies?
Certification from classification societies such as ABS, DNV, LR, BV, etc., is available upon request. As an ISO9001-certified manufacturer, we have the quality management system in place to facilitate such certification processes, which may involve additional testing and documentation. -
What is the typical delivery lead time for an order?
Lead times vary based on order quantity, valve size, material, and actuator requirements. Standard configurations typically have shorter lead times. We provide accurate delivery schedules upon receipt of your detailed inquiry and work closely with you to meet project timelines. -
Do you offer customization for specific shipboard applications?
Absolutely. We understand that marine projects often have unique requirements. We can customize aspects such as face-to-face dimensions, flange standards, stem extension lengths for insulated lines, locking devices, and paint specifications (e.g., specific marine epoxy coatings) to suit your design. -
How do you ensure valve performance in corrosive marine environments?
We select materials known for corrosion resistance (e.g., stainless steel grades, bronze) and apply suitable surface treatments or coatings. The design also includes features like extended bonnets in some models to protect the stem threads from direct exposure to corrosive elements. -
What is the difference between metal-seated and resilient-seated gate valves for steam?
Metal-seated valves use hard-faced seats (e.g., Stellite) for excellent wear resistance at high temperatures, making them suitable for superheated steam and frequent operation. Resilient-seated valves use inserts like graphite or PTFE for superior bubble-tight sealing at lower temperatures but may have temperature limitations. We recommend the best type based on your service conditions. -
What after-sales support do you provide?
We provide technical documentation, including dimensional drawings, material certificates, and test reports. Support is available for installation guidance and operational troubleshooting. Spare parts like gland packings, gaskets, and seals are also available for purchase.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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