Contact Platform Support
Help CenterGB/T Marine Gate Valve DN50-DN150 With Mill Test Report and Warranty
Product Spotlights
Related Products
-
GB/T Marine Gate Valve for Fuel Oil, Technical Support AvailableNegotiableMOQ: 1 Unit -
Marine Gate Valve With Flanged Ends, Stainless Steel Construction per GB/TNegotiableMOQ: 1 Unit
-
GB/T Marine Gate Valve DN50 DN150 High Temperature Steam DNV LR ApprovedNegotiableMOQ: 1 Unit
-
GB/T Standard Marine Gate Valve for Fuel Oil Systems, DN80-DN150NegotiableMOQ: 1 Unit
-
Corrosion Resistant Marine Gate Valve, 304/316L Stainless Steel, GB/T CompliantNegotiableMOQ: 1 Unit
As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd specializes in providing reliable and certified fluid control solutions for demanding industrial and marine applications. Our GB/T Marine Gate Valves, available from DN50 to DN150, are engineered to meet the rigorous standards of maritime operations, offering robust construction, dependable sealing, and full traceability with Mill Test Reports. With an annual export value reflecting our global reach across markets from North America to Southeast Asia, we combine manufacturing expertise with stringent quality control under our ISO9001 certification to deliver valves that ensure system integrity and operational safety.
These gate valves are designed specifically for marine environments, where corrosion resistance, durability, and maintenance ease are paramount. The design incorporates features to handle seawater, ballast systems, fuel lines, and other critical shipboard services. Key technical characteristics include:
- Full-Bore Design: Minimizes pressure drop and allows for efficient fluid passage, which is crucial for pump discharge and main line applications.
- Rising Stem Design: Provides clear visual indication of the valve position (open or closed), enhancing operational safety.
- Robust Sealing: Utilizes resilient seated or metal-to-metal sealing (depending on model) to ensure bubble-tight shut-off even after prolonged use.
- Corrosion Protection: Standard coatings and material selections, such as epoxy coating or stainless steel trim, combat the harsh saline atmosphere.
- Versatile Actuation: Available with standard handwheel operation or optional gear operators for larger sizes or high-pressure applications.
The valves are manufactured in compliance with Chinese National Standard GB/T, which governs dimensions, pressure ratings, and testing methods, ensuring interchangeability and reliability. Below is a summary of typical specifications for the size range:
| Nominal Diameter (DN) | Pressure Rating (PN) | Common Body Material | Standard Face-to-Face |
| 50 | 16, 25 | WCB / Ductile Iron | GB/T 12221 |
| 65 | 16, 25 | WCB / Ductile Iron | GB/T 12221 |
| 80 | 16, 25 | WCB / Ductile Iron | GB/T 12221 |
| 100 | 16, 25 | WCB / Ductile Iron | GB/T 12221 |
| 150 | 16, 25 | WCB / Ductile Iron | GB/T 12221 |
Choosing our marine gate valve brings distinct advantages to your project. The full documentation package, including the Mill Test Report (MTR), provides material traceability and proof of compliance with chemical and mechanical property requirements, which is often mandatory for shipyard approvals and class society rules. The included warranty offers peace of mind regarding manufacturing defects. Furthermore, our production under an ISO9001-certified quality management system ensures consistent processes and product reliability. The valves are designed for easy maintenance, with accessible gland packing and replaceable seats, reducing lifecycle costs and downtime.
For global buyers, our established logistics network allows flexible shipment from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, facilitating smooth delivery to diverse markets. We understand the critical nature of marine components and stand behind our products with technical support.
Frequently Asked Questions (FAQ)
-
What does GB/T standard mean for this valve?
GB/T refers to the Chinese National Recommended Standards. Valves manufactured to GB/T specifications have standardized dimensions, pressure-temperature ratings, and testing protocols, ensuring compatibility and reliability within systems designed to these norms, which are widely accepted in many international marine projects. -
Is this valve suitable for seawater service?
Yes, it is designed for marine applications. Standard models feature corrosion-resistant materials and protective coatings. For dedicated seawater service, specific material grades like CF8M (316 stainless steel) for trim or special epoxy coatings can be specified to enhance longevity. -
What is included in the Mill Test Report?
The MTR is a certificate from the material mill that details the chemical composition and mechanical properties (like tensile strength, yield strength) of the raw materials (e.g., castings, forgings) used for the valve body, bonnet, and other pressure-containing parts. It provides traceability and quality verification. -
What is the typical warranty period and coverage?
A standard warranty against defects in materials and workmanship is provided. The specific duration and terms can be confirmed upon inquiry, as they may vary. The warranty typically covers repair or replacement for failures under normal use within the stated period. -
Can these valves be supplied with different flange standards (e.g., ANSI, JIS)?
While the valve design conforms to GB/T dimensions, flanges can often be manufactured to other standards like ANSI B16.5 or JIS B2220 upon request. It is important to specify your required flange standard and facing at the time of inquiry. -
Are these valves fire-safe certified?
Standard models may not have specific fire-safe certification. However, fire-safe design versions compliant with standards like API 607/API 6FA are available as an option. Please indicate this requirement for a suitable quotation. -
What actuation methods are available?
The valves are primarily supplied with a handwheel for manual operation. For larger sizes (e.g., DN150) or higher pressure classes, manual gear operators, electric actuators, or pneumatic actuators can be furnished as optional accessories. -
Do you provide documentation for class society approval (e.g., ABS, DNV, LR)?
We can supply the necessary documentation, including MTRs and routine test certificates, which are fundamental for class approval processes. Formal type approval by a specific class society can be discussed and arranged as a project-specific service.
Backed by nearly a decade of manufacturing experience and a quality system certified to ISO9001, Shanghai Zhibang Valve has built a reputation for supplying dependable valves to a global clientele spanning from North America to Oceania. Our annual export volume is a testament to the trust placed in our products. When you choose our GB/T Marine Gate Valve, you are not just purchasing a component; you are securing a solution backed by full material traceability, a commitment to durability in harsh environments, and the logistical support to deliver to major ports worldwide. Contact us today to discuss your specific requirements for DN50 to DN150 gate valves and experience the reliability that comes with certified manufacturing and comprehensive product support.
Send Inquiry to This Supplier
You May Also Like
-
Gate Valve for Tanker Ship Fuel Oil Transfer, DN80-DN200NegotiableMOQ: 1 Unit
-
316L Stainless Steel Marine Gate Valve, DN50-DN200, PN1.6-4.0MPa FlangedNegotiableMOQ: 1 Unit
-
GB/T Standard 304 Stainless Steel Marine Gate Valve for Seawater SystemsNegotiableMOQ: 1 Unit
-
GB/T Marine Gate Valve for Ballast and Bilge Lines, 304 Stainless SteelNegotiableMOQ: 1 Unit
-
Gate Valve for Shipboard Potable Water and Firefighting LinesNegotiableMOQ: 1 Unit
-
Fuel Oil Gate Valve for Ship Engine Room, Carbon Steel, PN1.6-4.0MPaNegotiableMOQ: 1 Unit
-
Marine Gate Valve for Offshore Platform Seawater Cooling SystemsNegotiableMOQ: 1 Unit
-
Standard Compliant Marine Gate Valve With Technical Support and Spare Parts AvailabilityNegotiableMOQ: 1 Unit
-
Marine Fuel Oil Gate Valve for Bulk Carrier Fuel Systems, DN150NegotiableMOQ: 1 Unit
-
Marine Gate Valve Supplied With Mill Test Report and 12-Month WarrantyNegotiableMOQ: 1 Unit
