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GB/T1855 Marine Stop Check Valve OEM in Cast Steel for Ship Piping Systems
Product Spotlights
GB/T 1855 compliant marine stop check valve in durable cast steel. Functions as both a non-return valve and an isolation valve, saving space and cost in ship piping systems. Designed for high pressure, corrosion resistance, and reliability in harsh marine environments. Customizable for OEM requirements with global export support from an ISO9001 certified manufacturer.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Cast Steel
Standard:
Other, GB/T 1855
Application:
Other, Ship Piping Systems
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Cast Steel
Standard
Other, GB/T 1855
Application
Other, Ship Piping Systems
Service Type
Stop Check
Connection Type
Flanged (typical)
Pressure Rating
Class 150 to Class 300
Operation
Automatic (self-acting)
End Connection
Available upon request
Design
Swing Type (typical)
As a dedicated manufacturer of industrial valves since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to offer our high-performance GB/T 1855 Marine Stop Check Valve. Engineered specifically for the demanding environments of maritime applications, this valve is designed to provide reliable, one-way flow control and backflow prevention in ship piping systems. Our commitment to quality, backed by ISO9001 certification, ensures that every valve meets stringent standards for durability and safety. We understand the critical nature of marine components, and our cast steel construction offers the strength and corrosion resistance required for long-term, trouble-free operation at sea.
Core Features and Technical Advantages:
- Robust Cast Steel Construction: Manufactured from high-grade cast steel, this valve withstands high pressures, corrosive seawater environments, and mechanical stresses commonly encountered in marine service.
- Dual-Function Stop Check Design: This valve uniquely combines the functions of a check valve and a stop valve. It prevents reverse flow automatically under normal conditions and can be manually closed to isolate flow completely when needed.
- Compliance with GB/T 1855 Standard: Adherence to this specific Chinese national standard for marine valves guarantees dimensional accuracy, material suitability, and performance metrics recognized in the shipbuilding industry.
- Optimized for Ship Piping Systems: The design prioritizes compactness and efficiency for integration into complex shipboard piping networks for bilge, ballast, cooling, fuel, and other critical systems.
- Low Maintenance and High Reliability: The simple swing-disc mechanism ensures quick, positive sealing with minimal pressure drop. Durable internals reduce the need for frequent maintenance, a crucial factor for vessels at sea.
Detailed Technical Specifications:
| Parameter | Specification |
| Product Standard | GB/T 1855 |
| Primary Material (Body & Disc) | Cast Steel (WCB, WCC, LCB, etc. customizable) |
| Seat Material | Stainless Steel or hardened alloy (standard) |
| Pressure Class | Commonly available in Class 150, Class 200, Class 300 |
| Size Range (Nominal Diameter) | Typically DN50 to DN600 (2" to 24") |
| Connection Ends | Flanged (RF, RTJ), Wafer, or as per customer drawing |
| Temperature Range | Suitable for -20°C to +425°C (material dependent) |
| Flow Direction | Horizontal or vertical installation (design dependent) |
Benefits for Your Marine Projects:
- Enhanced System Safety: Prevents catastrophic backflow in critical systems, protecting pumps and other upstream equipment.
- Operational Flexibility: The stop-check function allows for system isolation without needing an additional gate valve, saving space and cost.
- Long Service Life: The corrosion-resistant cast steel body and quality internal components ensure longevity even in harsh saltwater conditions.
- Global Supply Chain Support: With annual exports valued between US$1-1.5 million and major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we efficiently serve a global clientele across North America, South America, Europe, Asia, Africa, and Oceania.
Choosing Shanghai Zhibang's Marine Stop Check Valve means partnering with an experienced manufacturer trusted by shipyards and marine engineers worldwide. Our established presence in international markets and proven export capability demonstrate our reliability as a supplier. The valve's compliance with the GB/T 1855 standard provides assurance of its fitness for purpose in marine applications. We invite you to leverage our manufacturing expertise for your OEM requirements, offering customizable solutions to meet your precise specifications. Contact us today to discuss how our valves can enhance the safety and efficiency of your ship piping systems.
Frequently Asked Questions (FAQ)
-
Q: What is the primary difference between a standard check valve and this stop check valve?
A: A standard check valve only prevents backflow automatically. A stop check valve has the added feature of an external mechanism (like a handwheel or lever) that allows an operator to manually close the disc, positively stopping flow in either direction, functioning as an isolation valve. -
Q: Can this valve be used with fluids other than seawater?
A: Yes. While designed for marine environments, the cast steel construction makes it suitable for a variety of industrial fluids including oil, steam, gas, and corrosive chemicals, depending on the specific material grade selected. -
Q: Are the flanges compliant with international standards like ANSI or JIS?
A> The valve body is manufactured to GB/T 1855 dimensions. However, end connections (flanges) can be customized to meet ANSI, JIS, DIN, or other international standards upon request to ensure compatibility with your existing piping. -
Q: What is the typical lead time for an OEM order?
A: Lead time varies based on order quantity, size, material specifications, and customization level. Standard configurations generally have shorter lead times. We provide detailed production schedules upon receipt of your specific requirements. -
Q: Do you provide pressure testing certificates with the valves?
A: Yes. As an ISO9001 certified manufacturer, we perform and document standard hydrostatic shell tests and seat leakage tests. Detailed test reports/certificates are available and can be provided with the shipment. -
Q: How does the valve perform in high-vibration environments like engine rooms?
A: The robust cast steel construction and design of the swing disc mechanism provide good resistance to vibration. For applications with extreme pulsation or vibration, specific design considerations can be discussed during the customization phase. -
Q: Is onsite technical support or installation guidance available?
A> We provide comprehensive installation, operation, and maintenance manuals with each shipment. For complex projects, remote technical support is available. Onsite support can be arranged subject to mutual agreement. -
Q: Can you supply valves with different trim materials for enhanced corrosion resistance?
A: Absolutely. We offer various trim material options (e.g., 316 stainless steel, Monel, Hastelloy) for the disc, seat, and hinge pin to suit specific corrosive media or higher temperature applications.
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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