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Pneumatic Marine Gate Valve With Mill Test Report, Standard Compliant With GB/T Specifications
Product Spotlights
Marine-grade pneumatic gate valve for reliable remote operation in seawater systems. Manufactured in strict compliance with GB/T standards and supplied with a full Mill Test Report for material traceability. Features robust construction with corrosion-resistant materials, optional fail-safe spring-return actuators, and flexible configuration to meet international flange standards. Ideal for shipbuilding, offshore platforms, and marine automation projects requiring documented quality and durability.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Application:
Other, Marine & Offshore
Valve Type:
Pneumatic Actuated Gate Valve
Operation Method:
Pneumatic actuator (On/Off or modulating)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine & Offshore
Valve Type
Pneumatic Actuated Gate Valve
Operation Method
Pneumatic actuator (On/Off or modulating)
Connection Standard
GB/T, ANSI, JIS, DIN (as per order)
Body Material
Cast Steel, Stainless Steel, Duplex Steel
Seat Material
Stainless Steel, PTFE, Metal Seated
Pressure Rating
Class 150, Class 300, PN10-PN40
End Connection
Flanged (RF, RTJ), Butt Weld
Actuator Type
Double-acting or Spring-return
Compliance
Manufactured to GB/T specifications, Mill Test Report provided
As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing reliable fluid control solutions for demanding marine environments. Our Pneumatic Marine Gate Valve, engineered in strict compliance with GB/T specifications and accompanied by a comprehensive Mill Test Report, represents our commitment to quality and traceability. Designed for critical onboard applications, this valve combines robust construction with precise pneumatic actuation to ensure fail-safe operation in seawater cooling, ballast, fuel, and other essential ship systems. With an annual export value reflecting our global reach across continents from North America to Oceania, we understand the stringent requirements of marine engineering and deliver products that meet them.
This valve is engineered for durability and performance in corrosive saltwater and harsh offshore conditions. The pneumatic actuator allows for remote and automated operation, which is crucial for modern vessel control systems. The gate valve design provides a tight shut-off with minimal pressure drop when fully open, making it ideal for isolation services. Each valve undergoes rigorous testing, and the provided Mill Test Report offers full material traceability and verification of mechanical properties, giving shipyards, shipowners, and marine equipment suppliers complete confidence in the product's integrity and compliance.
Key Features & Technical Advantages:
- Robust Marine-Grade Construction: Manufactured from materials selected for superior corrosion resistance, such as cast steel with protective coatings or stainless steel grades (CF8, CF8M, Duplex). The design accounts for vibration and thermal stresses common in marine applications.
- Reliable Pneumatic Actuation: Equipped with a double-acting or spring-return pneumatic actuator. The spring-return version provides fail-safe operation (fail-open or fail-close), a critical safety feature for marine systems. Actuators are sealed for protection against moisture and salt spray.
- Precise Flow Control & Tight Sealing: The parallel or wedge gate design ensures a bubble-tight seal when closed. Precision-machined seats and gates minimize wear and extend service life, even with suspended solids sometimes present in seawater.
- Full Compliance & Documentation: The valve is manufactured according to relevant GB/T standards for dimensions, pressure ratings, and materials. The accompanying Mill Test Report (MTR) details chemical composition, mechanical strength, and non-destructive test results, fulfilling classification society and end-user documentation requirements.
- Flexible Configuration & Global Compatibility: While compliant with GB/T, valves can be configured to match other international standards like ANSI, JIS, or DIN for flange dimensions and pressure ratings. This flexibility facilitates integration into both newbuild and retrofit projects worldwide.
- Ease of Maintenance & Service: Designed with maintenance in mind. The gland packing is easily adjustable, and many models feature a separable gland flange. The pneumatic actuator can be serviced or replaced without removing the valve body from the pipeline.
Technical Specifications Overview:
| Parameter | Specification / Options |
| Design Standard | GB/T, with ANSI, JIS, DIN options |
| Pressure Class | Class 150, Class 300, PN10, PN16, PN25, PN40 |
| Size Range (Nominal) | DN50 (2") to DN600 (24") |
| Body Material | WCB (Cast Carbon Steel), CF8 (304 SS), CF8M (316 SS), Duplex Steel |
| Seat & Gate Material | 13% Cr Stainless Steel, 316 SS, Stellite, PTFE (Soft Seated) |
| End Connection | Flanged (RF, RTJ), Butt Weld Ends |
| Actuator Air Supply | Standard: 4-7 bar (60-100 psi). Other pressures customizable. |
| Actuator Options | Double-Acting, Spring-Return (Fail-Safe), with Solenoid Valve & Limit Switches |
| Operating Temperature | -29°C to +425°C (depending on seat material and rating) |
| Leakage Class | Metal Seated: API 598 / GB/T 13927. Soft Seated: Zero Leakage. |
Benefits for Your Marine Project:
- Enhanced System Reliability: Reduces unplanned downtime through robust design and proven materials, crucial for vessel operational efficiency.
- Simplified Automation Integration: The pneumatic interface allows straightforward connection to shipboard control and automation systems, enabling centralized monitoring and control.
- Streamlined Procurement & Approval: The GB/T compliance and full Mill Test Report package simplify the technical approval process with shipyards and classification societies.
- Reduced Lifecycle Costs: Durable construction and accessible maintenance points lower the total cost of ownership by extending service intervals and reducing replacement needs.
- Global Supply Chain Support: With major shipment ports like Shanghai, Guangzhou, and Hong Kong, we ensure timely and efficient delivery to your project location, whether for newbuilding or spare parts.
FAQ (Frequently Asked Questions)
-
Q: What is included in the Mill Test Report (MTR)?
A: The MTR is a certified document from the steel mill. It typically includes the material grade, heat number, chemical analysis, results of mechanical tests (tensile strength, yield strength, elongation), and often the results of non-destructive tests. It provides traceability for the valve's primary pressure-containing parts. -
Q: Can this valve be used for other fluids besides seawater?
A: Absolutely. While designed for marine service, the material selection determines its suitability. Valves in stainless steel or with appropriate linings are used for chemicals, oils, fuels, and other industrial fluids. Please specify your medium for correct material recommendation. -
Q: What is the difference between double-acting and spring-return actuators?
A: A double-acting actuator uses air pressure to move the valve in both directions (open and close). A spring-return actuator uses air to move in one direction and a built-in spring to return to the default position (open or closed) if air supply is lost, providing a fail-safe function. -
Q: Are these valves suitable for classification society approval (e.g., ABS, DNV, LR)?
A: Our valves are manufactured to recognized standards (GB/T, which is often aligned with ISO). The provision of a full MTR is a key requirement for classification society approval. We can support the approval process with the necessary documentation; specific certification can be arranged upon request. -
Q: What is the typical lead time for an order?
A: Lead time varies based on size, material, and order quantity. Standard configurations typically have a shorter lead time. We maintain efficient production planning to meet project schedules, a factor in our successful export business to diverse global markets. -
Q: Do you provide accessories like solenoid valves and limit switches?
A> Yes, we can supply a complete package. The pneumatic actuator can be pre-mounted with solenoid valves for electrical control, position limit switches for open/close signal feedback, and manual overrides for emergency operation. -
Q: How does GB/T standard compare to ANSI or DIN?
A: GB/T is the Chinese national standard system. For gate valves, key standards like GB/T 12234 for flanged valves are broadly technically equivalent to international standards like API 600 or ISO 10434. Dimensional differences, especially in flange drilling, may exist. We clarify and confirm all interface dimensions per the project's specified standard. -
Q: What kind of after-sales support do you offer?
A: As a manufacturer, we provide technical documentation, installation guidance, and spare parts support. Our experience in exporting to over a dozen global markets, including North America, Europe, and Southeast Asia, means we are accustomed to providing remote support and ensuring customer satisfaction.
Backed by our ISO9001 certified manufacturing processes and nearly a decade of industry experience since 2016, Shanghai Zhibang delivers valves that combine technical precision with practical reliability. Our consistent export performance, serving markets from Eastern Europe to Oceania, is a testament to the trust placed in our products. Choosing our Pneumatic Marine Gate Valve means selecting a component backed by full material traceability, adherence to recognized standards, and a manufacturer committed to supporting your project's success. Contact us today to discuss your specifications, request a detailed quotation, or obtain technical data sheets for your engineering review.
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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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