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Cast Steel Pneumatic Marine Gate Valve Compliant With GB/T Standard, Flanged Connection
Product Spotlights
ISO9001-certified cast steel pneumatic marine gate valve compliant with GB/T standards. Features flanged connections, corrosion-resistant trim for seawater, and reliable pneumatic actuation for remote control. Designed for durability in harsh marine environments, offering bubble-tight shut-off, wide size/pressure ranges, and global standard compatibility for shipbuilding and offshore applications.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine
Body Material:
Carbon Steel (WCB, WCC) or Alloy Steel (WC6, WC9)
Connection Type:
Flanged (RF, FF, RTJ)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine
Body Material
Carbon Steel (WCB, WCC) or Alloy Steel (WC6, WC9)
Connection Type
Flanged (RF, FF, RTJ)
Actuation Type
Pneumatic Actuator (Double-acting or Spring-return)
Pressure Rating
PN10, PN16, PN25, PN40, Class150, Class300
Size Range
DN50 to DN600 (2“ to 24“)
Temperature Range
-29°C to 425°C
Design Standard
GB/T 12234, API 600, API 6D
Seat & Disc Material
Stainless Steel (13Cr/304/316) or Stellite
End Connection Standard
GB/T 9113, ASME B16.5, EN 1092-1
As a professional manufacturer with ISO9001-certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable fluid control solutions for demanding marine environments. Our Cast Steel Pneumatic Marine Gate Valve, designed in strict compliance with GB/T standards, represents our commitment to engineering excellence and operational safety at sea. Engineered to withstand the corrosive and high-pressure conditions typical of seawater and offshore applications, this valve ensures precise, remote, and fail-safe isolation of critical pipelines on vessels and offshore platforms.
The integration of a pneumatic actuator transforms this robust gate valve into a highly efficient automated component, enabling centralized control and rapid response essential for modern marine operations. With an annual export value demonstrating our global reach across continents from North America to Southeast Asia, we understand the stringent requirements of international marine projects. This product is a cornerstone of our portfolio, built to deliver unwavering performance where reliability is non-negotiable.
Core Features & Technical Advantages:
- Superior Material Construction: The valve body is precision-cast from high-grade carbon steel (WCB/WCC) or alloy steel (WC6/WC9), offering exceptional tensile strength and resistance to mechanical stress and shock loads encountered at sea.
- Corrosion & Erosion Resistance: Critical internal components like the seat and disc are often furnished with stainless steel (13Cr, 304, 316) or Stellite hard-facing, providing excellent resistance to seawater corrosion, cavitation, and particle erosion for extended service life.
- Pneumatic Actuation for Reliability: The valve features a double-acting or spring-return (fail-safe) pneumatic actuator. This ensures positive, quarter-turn operation for full open/close control, ideal for remote or automated systems where manual intervention is impractical or hazardous.
- Bubble-Tight Shut-off: Utilizing a parallel or wedge gate design with precision-machined sealing surfaces, the valve achieves a bubble-tight seal in the closed position, preventing costly and dangerous fluid leaks in sensitive marine systems.
- Flanged Connection Versatility: Standard flanged ends per GB/T 9113, ASME B16.5, or EN 1092-1 facilitate secure, leak-proof bolting to existing pipeline networks. Available in Raised Face (RF), Flat Face (FF), or Ring Type Joint (RTJ) facings to match specific flange standards.
- Comprehensive Standard Compliance: Designed and tested per GB/T 12234 for steel gate valves, with options compliant with API 600, API 6D, and other international norms, ensuring interoperability and acceptance in global marine projects.
- Wide Operational Envelope: Engineered for a broad temperature range (typically -29°C to 425°C) and multiple pressure classes (PN10/16/25/40, Class150/300), making it suitable for various shipboard services from ballast and bilge to fuel oil and cooling water.
Detailed Technical Specifications:
| Parameter | Specification / Options |
|---|---|
| Nominal Diameter (DN) | DN50, DN65, DN80, DN100, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600 |
| Pressure Rating | PN10, PN16, PN25, PN40 | Class150, Class300 |
| Body Material | WCB (Carbon Steel), WCC (Carbon Steel), WC6 (1.25% Cr-0.5% Mo Steel), WC9 (2.25% Cr Steel) |
| Trim Material (Seat/Disc) | 13% Cr Stainless Steel, SS304, SS316, Stellite 6 (upon request) |
| Stem Material | Stainless Steel (13Cr, 304, 316, 17-4PH) |
| Actuator Type | Pneumatic Double-acting or Spring-return (Fail-safe Open/Close) |
| Actuator Air Supply | Standard: 4-7 bar (60-100 psi). Other pressures customizable. |
| End Connection | Flanged, RF/FF/RTJ, as per GB/T 9113, ASME B16.5, EN 1092-1 |
| Design & Test Standards | GB/T 12234, API 600, API 6D, API 598 (Leak Test) |
| Operating Temperature | -29°C to 425°C (dependent on material selection) |
Benefits for Your Marine Operations:
- Enhanced Safety & Control: Remote pneumatic operation reduces the need for crew presence in hazardous or hard-to-reach areas, improving overall platform or vessel safety.
- Reduced Operational Costs: Automated, reliable shut-off minimizes product loss, prevents environmental contamination, and reduces maintenance frequency and associated downtime.
- Global Project Compatibility: Compliance with GB/T and optional API/EN standards ensures the valve is suitable for shipbuilding and offshore projects worldwide, simplifying procurement and installation.
- Durability in Harsh Conditions: The combination of cast steel construction and corrosion-resistant trim guarantees longevity even when handling seawater, ballast water, or other aggressive marine media.
- Streamlined Integration: Standard flanged connections allow for straightforward installation into new or existing piping systems, saving time and engineering resources.
Frequently Asked Questions (FAQ):
-
Q: What is the main advantage of a pneumatic actuator on a marine gate valve?
A: Pneumatic actuation allows for rapid, remote, and automated valve operation. This is crucial on ships and offshore platforms for emergency isolation, process control from a central location, and for operating valves in inaccessible or dangerous areas, enhancing both efficiency and crew safety. -
Q: Can this valve be used for seawater applications?
A: Absolutely. When specified with appropriate trim materials like 316 stainless steel or Stellite-hardened seats, this valve is specifically engineered to handle the corrosive nature of seawater, ballast water, and other saline solutions common in marine environments. -
Q: What does "fail-safe" mean for the pneumatic actuator?
A: A "fail-safe" or spring-return actuator will automatically move the valve to a predetermined safe position (fully open or fully closed) in the event of a loss of air supply or control signal. This critical feature prevents unsafe conditions during power or system failures. -
Q: Are your flanged dimensions compatible with international pipe standards?
A: Yes. While compliant with GB/T standards, our valves are also manufactured with flanged dimensions per ASME B16.5 and EN 1092-1. It is essential to specify your required flange standard (and facing: RF, FF, RTJ) when ordering to ensure perfect fit-up. -
Q: What pressure classes are available?
A: We offer a range of pressure ratings to suit different system requirements, including PN10, PN16, PN25, PN40 (metric) and Class 150, Class 300 (ASME). The suitable class depends on your specific operating pressure and design code. -
Q: Do you offer customization for specific project requirements?
A: Yes, as a manufacturer, we can customize various aspects such as material grades for body and trim, actuator specifications (air pressure, fail-safe action), flange standards, surface coatings (e.g., epoxy paint for extra corrosion protection), and accessory packages (limit switches, solenoid valves). -
Q: What quality control measures are in place?
A: Our production is governed by an ISO9001 quality management system. Each valve undergoes rigorous testing, including shell tests, seat leak tests per API 598 or equivalent standards, and dimensional checks to ensure it meets the specified design and performance criteria. -
Q: What are your main shipping ports and lead times?
A> We ship globally from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing. Lead times vary based on order quantity, specification complexity, and customization but are typically competitive for standard configurations.
Backed by our ISO9001 certification and a proven track record of exporting to diverse markets across North America, Europe, Asia, Africa, and Oceania, Shanghai Zhibang Valve stands as a reliable partner for your marine valve needs. Our Cast Steel Pneumatic Marine Gate Valve embodies this reliability, combining robust construction with automated functionality to meet the rigorous demands of the maritime industry. With an annual export value reflecting consistent customer trust, we are committed to delivering products that ensure the safety, efficiency, and longevity of your marine systems. Contact us today to discuss your specific requirements and discover how our valves can be integrated into your next project.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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