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Home > Industrial Equipment & Components > Valve > Gate Valve > GB/T Marine Ballast Water Gate Valve With 12-Month Warranty and Mill Test Report Provided

GB/T Marine Ballast Water Gate Valve With 12-Month Warranty and Mill Test Report Provided

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GB/T Marine Ballast Water Gate Valve With 12-Month Warranty and Mill Test Report Provided photo-4

GB/T Marine Ballast Water Gate Valve With 12-Month Warranty and Mill Test Report Provided photo-5

Product Spotlights

GB/T standard marine gate valve designed for ballast water systems. Features robust construction with corrosion-resistant materials, full-port design for minimal flow resistance, and reliable sealing. Offered with a 12-month warranty and essential Mill Test Report for quality assurance. Suitable for global maritime applications with flexible actuation options.

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

Key Specifications

Get Latest Price

Standard:

Other, GB/T

Application:

Other, Marine ballast water systems

Valve Type:

Gate Valve

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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Standard Other, GB/T

Application Other, Marine ballast water systems

Valve Type Gate Valve

Warranty 12 months

Documentation Mill Test Report provided

Material (Body) Cast steel, ductile iron, or stainless steel

Connection Type Flanged

Operation Manual, gear operated, or pneumatic actuated

Pressure Rating PN10, PN16, PN25, PN40

Size Range DN50 to DN800

As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing reliable and durable fluid control solutions for the global maritime industry. Our GB/T Marine Ballast Water Gate Valve is engineered to meet the rigorous demands of ship ballast systems, ensuring safe and efficient operation in critical marine environments. With an annual export value exceeding US$1 million and a presence in markets worldwide, we combine manufacturing expertise with a deep understanding of international standards to deliver valves that shipowners and shipyards can trust.

This gate valve is a cornerstone component for managing ballast water, crucial for vessel stability and trim. Designed and manufactured in compliance with Chinese GB/T standards, it offers robust performance, long service life, and dependable sealing. We back our product with a comprehensive 12-month warranty and provide a Mill Test Report for each valve, giving you full traceability and confidence in the material quality and manufacturing process.

Core Features & Technical Advantages:

Robust Construction: The valve body is typically crafted from high-grade cast steel, ductile iron, or stainless steel, selected for its excellent corrosion resistance and strength to withstand harsh seawater and the variable conditions within ballast tanks.
Superior Sealing Performance: Features a resilient seated gate or a metal-to-metal wedge design, ensuring bubble-tight shut-off to prevent cross-contamination between different ballast tanks or during deballasting operations, which is vital for environmental protection and operational safety.
Low Flow Resistance: When fully open, the gate retracts completely into the bonnet, providing a straight-through flow path with minimal pressure drop. This design is energy-efficient and facilitates faster ballast water loading and discharge.
Versatile Operation: Available in multiple actuation types to suit different system designs and automation levels:
- Manual Operation: Standard handwheel for direct control.
- Gear Operation: Gearbox for easier operation of larger-sized valves.
- Pneumatic Actuation: For remote and automated control integration.
Full Port Design: The valve bore matches the pipeline diameter (full bore), preventing sediment buildup and allowing for the passage of inspection tools or cleaning pigs if required by the system.
Comprehensive Documentation: Each valve is supplied with a Mill Test Report (MTR) detailing the chemical composition and mechanical properties of the raw materials, providing verifiable proof of quality and compliance with specified standards.

Key Technical Specifications:

Parameter	Specification / Options
Design & Manufacturing Standard	GB/T (Chinese National Standard)
Pressure Rating (PN)	PN10, PN16, PN25, PN40
Size Range (DN)	DN50 ~ DN800
Connection Type	Flanged (RF, FF), as per GB/T standard
Body Material	WCB (Cast Carbon Steel), QT450 (Ductile Iron), CF8/CF8M (Stainless Steel)
Seat & Seal Material	Stainless Steel, EPDM, NBR, PTFE (options available)
Operation Temperature	-20°C to +200°C (varies with seat material)
Test Standards	Shell Test & Seat Test per GB/T 13927

Benefits for Your Operations:

Enhanced System Reliability: Durable construction reduces the risk of in-service failure, minimizing downtime and costly repairs during voyages.
Operational Safety: Positive shut-off capability ensures precise control over ballast water, contributing to vessel stability and crew safety.
Reduced Maintenance: High-quality materials and precision machining lead to longer maintenance intervals and lower lifecycle costs.
Regulatory Compliance Support: Manufactured to recognized GB/T standards and accompanied by traceable documentation, aiding in system certification and audits.
Global Supply Chain Integration: With major shipment ports including Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and flexible delivery to shipyards and ports worldwide.

Choosing Shanghai Zhibang's Marine Ballast Water Gate Valve means partnering with an ISO9001-certified manufacturer committed to quality management at every stage. Our valves are trusted by clients across North America, South America, Europe, Asia, Africa, and Oceania, a testament to their performance and our reliable service. The included 12-month warranty underscores our confidence in the product's durability. For a critical component that impacts both vessel performance and environmental compliance, select a valve built with expertise and backed by solid documentation. Contact us today to discuss your specific requirements, request a detailed quotation, or obtain technical data sheets for your project evaluation.

Frequently Asked Questions (FAQ):

Q: What does "GB/T" standard mean for this valve?
A: GB/T refers to the Chinese National Standards (Guo Biao/Tui). Valves manufactured to GB/T standards are widely accepted in international marine projects, especially those involving Chinese shipyards or owners. They specify requirements for design, dimensions, materials, pressure ratings, and testing, ensuring product reliability and interchangeability.
Q: Is this valve suitable for seawater service?
A: Yes, it is specifically designed for marine ballast water systems. Material options like cast steel (WCB) with appropriate coatings or stainless steel (CF8/CF8M) offer good resistance to seawater corrosion. The exact material selection should be based on your specific water chemistry and service conditions.
Q: What is included in the Mill Test Report (MTR)?
A: The MTR is a certificate from the raw material mill. It provides traceability and verifies the chemical composition (e.g., Carbon, Manganese, Chromium content) and mechanical properties (e.g., Yield Strength, Tensile Strength) of the metal used for the valve body and critical components, confirming it meets the ordered specification.
Q: Can this valve be actuated automatically?
A: Yes. While standard models are manual, we can supply the valve prepared for the installation of pneumatic, hydraulic, or electric actuators. Please specify your actuation requirements (torque, voltage, control signal) when inquiring.
Q: What is the typical delivery lead time?
A: Lead time depends on the valve size, material, and quantity. Standard specifications are often available from stock or have shorter production cycles. For large or customized orders, we provide a confirmed timeline upon receipt of your detailed inquiry.
Q: Do you offer customization for non-standard pressures or sizes?
A: Yes, Shanghai Zhibang has engineering capabilities to develop valves according to client drawings or specific requirements, including special pressure ratings, extended dimensions, or unique material combinations. Contact our technical team to discuss your needs.
Q: How does the 12-month warranty work?
A: Our warranty covers defects in materials and workmanship under normal use for a period of 12 months from the date of shipment. Should any covered issue arise, we will repair or replace the faulty valve or components. Proper installation and use as intended are prerequisites.
Q: What are your main shipping terms and ports?
A: We typically ship under FOB, CIF, or CFR terms from major Chinese ports, including Shanghai, Guangzhou, Hong Kong, and Beijing. We work with reliable freight forwarders to ensure smooth logistics to your destination.