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Home > Industrial Equipment & Components > Valve > Check Valve > GB/T1855 Flanged Stop Check Valve, DN50 to DN200 Size Range for Marine Pump Lines
GB/T1855 Flanged Stop Check Valve, DN50 to DN200 Size Range for Marine Pump Lines
Product Spotlights
GB/T1855 standard flanged stop check valve for DN50-DN200 marine pump lines. Combines automatic backflow prevention with manual shut-off for enhanced safety and control. Manufactured by an ISO9001-certified company with global export experience. Offers corrosion-resistant material options and customizable pressure ratings for reliable performance in demanding marine environments.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Product Standard:
GB/T 1855
Connection Type:
Flanged
Size Range:
DN50 to DN200
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Product Standard
GB/T 1855
Connection Type
Flanged
Size Range
DN50 to DN200
Primary Application
Marine Pump Lines
Valve Type
Stop Check Valve
Manufacturer
Shanghai Zhibang Valve Manufacture Co., Ltd
Production Year
Established 2016
Quality Management
ISO9001 Certified Manufacturer
Available Ports
Shanghai, Guangzhou, Hongkong, Beijing
Shanghai Zhibang Valve Manufacture Co., Ltd, an ISO9001 certified manufacturer established in 2016, specializes in producing high-performance industrial valves for demanding applications. Our GB/T1855 Flanged Stop Check Valve is engineered specifically for marine pump lines, offering reliable flow control and backflow prevention in critical piping systems. With an annual export value demonstrating our global reach, we combine rigorous manufacturing standards with practical design to deliver valves that meet the stringent requirements of shipbuilding, offshore platforms, and marine engineering.
This valve serves a dual function: it acts as a standard check valve to prevent reverse flow, and it can also be manually closed to completely stop flow, providing operators with greater control over their pump systems. Designed for sizes from DN50 to DN200, it integrates seamlessly into various marine piping layouts.
Core Features & Technical Advantages:
- Dual-Function Design: Combines automatic check valve operation with manual shut-off capability, enhancing system flexibility and safety.
- Marine-Grade Construction: Materials and design choices prioritize corrosion resistance and durability in saltwater and humid environments.
- Flanged Connection: Provides a robust, leak-resistant connection that is ideal for high-pressure pump lines and facilitates easier installation and maintenance.
- Compliance with GB/T 1855: Manufactured according to this Chinese national standard for valve structure dimensions, ensuring compatibility and reliability within standardized systems.
- Size Versatility: The DN50 to DN200 range covers common pipeline diameters used in marine auxiliary systems, main pump lines, and cooling circuits.
Technical Specifications & Selection Table:
| Parameter | Details / Range |
| Product Standard | GB/T 1855 |
| Valve Type | Stop Check Valve (Non-Return & Stop Valve) |
| Connection | Flanged |
| Size Range (Nominal Diameter) | DN50, DN65, DN80, DN100, DN125, DN150, DN200 |
| Primary Application | Marine Pump Lines (Bilge, Ballast, Cooling, Fuel) |
| Pressure Class | Customizable based on project requirements |
| Material Options | Cast Steel, Stainless Steel, Duplex Steel (available upon request) |
Benefits for Your Project:
- System Safety: Prevents pump damage and system disruption from backflow.
- Operational Control: The stop function allows for isolation of specific lines for maintenance or emergency shutdown.
- Reduced Maintenance: Robust design and suitable materials minimize corrosion and wear in marine environments.
- Installation Efficiency: Flanged design aligns with common marine piping practices, speeding up installation.
- Global Supply Reliability: Supported by our experience exporting to diverse markets including North America, Europe, Asia, and Africa.
Backed by our ISO9001 quality management system and nearly a decade of manufacturing expertise since 2016, Shanghai Zhibang's valves are built for reliability. Our products reach clients across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Mid East, and Europe, shipped from major ports like Shanghai, Guangzhou, Hongkong, and Beijing. This GB/T1855 Flanged Stop Check Valve embodies our commitment to providing specialized solutions for the marine industry. For detailed specifications, material options, or pricing for your required DN size, contact us to discuss how this valve can enhance the safety and efficiency of your marine pump systems.
Frequently Asked Questions (FAQ):
-
What is the main difference between a standard check valve and this stop check valve?
A standard check valve only prevents reverse flow automatically. Our stop check valve adds a manual operator (like a handwheel) that allows you to positively close the valve, stopping flow in both directions, which is useful for isolation. -
Is this valve suitable for other applications besides marine pump lines?
While designed for marine environments, its robust flanged construction and dual function make it applicable for other industrial pump and piping systems requiring backflow prevention and isolation, such as in power plants or water treatment. -
What flange standard does this valve comply with?
The valve is manufactured to the dimensional standards of GB/T 1855. Specific flange face dimensions (like RF, FF) and drilling standards can be customized to match common international standards such as ANSI, DIN, or JIS upon request. -
Can I get this valve in stainless steel for higher corrosion resistance?
Yes. While standard offerings may be in cast steel, stainless steel and other corrosion-resistant materials like duplex steel are available as options to suit specific environmental conditions. -
What is the typical pressure rating for these valves?
Pressure ratings (e.g., PN16, PN25, Class 150) are customizable based on your system requirements. Please specify your operating pressure during inquiry for accurate product selection. -
How does the GB/T 1855 standard affect compatibility with international piping?
GB/T 1855 primarily defines valve structure dimensions. The flanged connection interface can be produced to match common international flange standards, ensuring compatibility. Our engineering team can assist with interface specifications. -
Do you provide testing certificates for marine applications?
As an ISO9001 certified manufacturer, we conduct routine factory tests. Specific test reports or certificates required for marine classification societies can be discussed and provided based on project needs. -
What is the lead time for an order of DN100 and DN150 valves?
Lead times depend on order quantity, material selection, and specific configuration. Generally, for standard materials and configurations, production can be efficient. Contact us with your quantity requirements for a precise timeline.
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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