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Home > Industrial Equipment & Components > Valve > Gate Valve > GB/T Marine Gate Valve DN50-DN150 Carbon Steel High Temperature Steam

GB/T Marine Gate Valve DN50-DN150 Carbon Steel High Temperature Steam

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Product Spotlights

GB/T compliant marine gate valve for high-temperature steam, crafted from durable carbon steel in sizes DN50-DN150. Features metal-seated design for leak-tight sealing at elevated temperatures, rising stem for safe visual indication, and full-port flow. Ideal for shipboard and industrial steam systems, backed by ISO9001 certified manufacturing and global export expertise.

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

Key Specifications

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Material:

Carbon Steel

Application:

Other, Marine

Size Range:

DN50 to DN150

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
Company Profile
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Material Carbon Steel

Application Other, Marine

Size Range DN50 to DN150

Design Standard GB/T

Connection Type Flanged (Common)

Temperature Rating Suitable for High Temperature Steam

Operation Type Handwheel Operated

Seat Type Metal Seated (Common for Steam)

Face to Face Standard Dimension per GB/T

As a leading manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our GB/T Marine Gate Valve series, engineered for demanding high-temperature steam applications in marine environments. Our valves, crafted from robust carbon steel, are designed to deliver reliable shut-off performance, ensuring operational safety and efficiency for your critical piping systems. With over seven years of industry experience and a global export footprint spanning from North America to Southeast Asia, we understand the rigorous standards required for marine components.

This gate valve series is a cornerstone product for shipbuilders, power plant operators, and industrial facilities utilizing steam systems. Its design prioritizes durability under thermal stress and corrosive marine atmospheres. The valve's construction allows for a full, unobstructed flow path when open and provides a tight seal when closed, minimizing pressure drop and preventing leakage of high-energy steam.

Key Features & Technical Advantages:

Robust Carbon Steel Construction: The valve body, bonnet, and gate are manufactured from high-grade carbon steel, offering excellent strength and resistance to the high pressures and temperatures associated with steam service.
Compliance with GB/T Standards: Designed and produced in strict adherence to Chinese National Standards (GB/T), ensuring dimensional interchangeability, performance reliability, and compatibility with domestic and international piping systems that specify these standards.
High-Temperature Sealing Integrity: Features a metal-to-metal sealing design between the gate and seats, which is essential for maintaining a leak-tight seal at elevated temperatures where elastomeric seals would fail.
Stem Design for Safety: Utilizes a rising stem (OS&Y) design, providing a clear visual indication of whether the valve is open or closed—a critical safety feature for steam applications.
Versatile Size Range: Available in nominal diameters from DN50 to DN150, catering to a wide array of main and auxiliary steam line requirements.
Rugged Operation: Equipped with a handwheel for manual operation, designed for smooth actuation even after prolonged periods of inactivity, thanks to precision machining and appropriate surface treatments.

Detailed Technical Specifications:

Parameter	Specification
Product Type	Marine Gate Valve, Flanged Ends
Design & Manufacture Standard	GB/T
Size Range (Nominal Diameter)	DN50, DN65, DN80, DN100, DN125, DN150
Pressure Class (Typical)	PN16, PN25, PN40 (Available upon request)
Body Material	Carbon Steel (WCB or equivalent)
Trim Materials (Gate & Seat)	13Cr or Stellite overlays for high-temperature service
Stem Material	Stainless Steel (Optional)
Seat Type	Metal Seated
Operation	Manual Handwheel (Rising Stem)
Temperature Range	Suitable for saturated & superheated steam services
Face-to-Face Dimensions	As per GB/T standards
Flange Standard	GB/T (Can be customized to JIS, DIN, ANSI, etc.)

Benefits for Your Operations:

Enhanced System Safety: Reliable shut-off prevents dangerous steam leaks, protecting personnel and equipment.
Reduced Maintenance Costs: Durable construction and high-temperature resistant materials extend service intervals and valve lifespan.
Operational Efficiency: Full-port design minimizes flow resistance, conserving energy in steam transmission.
Global Supply Chain Compatibility: With major shipment ports like Shanghai, Guangzhou, and Hong Kong, we ensure timely delivery to your project sites worldwide.

Trust in a product backed by a manufacturer with a proven track record. Since our establishment in 2016, Shanghai Zhibang has consistently exported valves valued between US$1 Million to US$1.5 Million annually, serving diverse markets across five continents. Our ISO9001 certification is a testament to our commitment to quality management at every production stage. When you choose our GB/T Marine Gate Valves, you are not just purchasing a component; you are investing in reliability backed by international quality standards and extensive global application experience. Contact us today to discuss your specific requirements for DN50 to DN150 carbon steel valves and experience the Zhibang difference in performance and service.

Frequently Asked Questions (FAQ):

Q: What is the maximum temperature this gate valve can handle?
A: This valve series is specifically designed for high-temperature steam service. The exact maximum temperature depends on the pressure class and specific material trim selected (e.g., 13Cr trim). Please consult with our technical team for your specific steam parameters.
Q: Are these valves suitable for seawater cooling lines or other marine fluid services?
A: While designated as "Marine Gate Valves," their primary design is for high-temperature steam applications onboard. For seawater or other corrosive fluids, we recommend valves constructed from materials like bronze or stainless steel, which we also offer.
Q: Can you provide valves with flanges matching ANSI or JIS standards instead of GB/T?
A: Yes, customization is available. While standard production follows GB/T, we can manufacture valves with flange dimensions and drilling to meet ANSI, JIS, DIN, or other international standards upon request.
Q: Is the handwheel operation suitable for frequently operated valves?
A> The manual handwheel design is reliable for isolation valves that are not cycled excessively. For applications requiring frequent operation, we can discuss options like gear operators or even actuated versions (electric/pneumatic) to reduce labor.
Q: Do you offer a full range of pressure classes like PN16, PN25, and PN40?
A: Yes, our production capabilities cover these common pressure ratings. The standard offering can be confirmed, and other pressure classes can be explored based on your design specifications.
Q: What is the lead time for an order of DN100 valves?
A> Lead times vary based on order quantity, specific configuration, and current production schedule. Generally, for standard DN100 valves in carbon steel, we maintain efficient production flow. Contact our sales team with your quantity for an accurate delivery estimate.
Q: How does the rising stem (OS&Y) feature benefit maintenance?
A: The rising stem provides a clear, visual indication of the valve position—fully extended means open, retracted means closed. This is a critical safety feature, especially for steam, and it also helps in diagnosing if the valve is fully seated during maintenance checks.
Q: What kind of testing do these valves undergo before shipment?
A> As an ISO9001 certified manufacturer, our quality control process includes material inspection, dimensional checks, and pressure tests (shell test and seat leak test) per applicable standards to ensure each valve meets performance specifications.