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Help CenterDesigned for Marine Pump Outlet Systems - Zhibang Valve Combined Globe Check Valve Cast Steel Flanged DN15-DN200 PN1.6-6.4MPa
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Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Combined Globe Check Valve — a precision-engineered solution specifically designed for marine pump outlet systems. As a trusted manufacturer since 2016, we combine years of experience with rigorous quality control to deliver valves that withstand the demanding conditions of marine environments. This cast steel, flanged valve integrates the functions of a globe valve and a check valve into one compact unit, offering reliable flow control and backflow prevention in a single installation. Whether you are upgrading an existing system or building new vessels, our valve ensures efficient operation and reduced maintenance costs.
The valve is engineered to handle a wide range of sizes (DN15 to DN200) and pressure classes (PN1.6 to 6.4 MPa), making it suitable for diverse applications on board ships, offshore platforms, and marine terminals. Its combined design eliminates the need for separate globe and check valves, saving space and simplifying piping layouts. Below, we detail the key features and technical specifications that set this product apart.
Key Features
- Dual Functionality: Acts as both a globe valve (throttling/stop) and a check valve (prevent reverse flow).
- Robust Cast Steel Body: Durable construction suitable for high-pressure marine systems.
- Flanged Connections: Easy installation and maintenance with standard flange dimensions.
- Wide Pressure Range: Available from PN1.6 to PN6.4 MPa to match various system requirements.
- Compact & Space-Saving: Reduces footprint compared to two separate valves.
- Low Maintenance: Simple internal design minimizes wear and facilitates quick servicing.
Technical Specifications
| Valve Type | Combined Globe Check Valve (Stop-Check) |
| Body Material | Cast Steel (WCB or equivalent) |
| Connection | Flanged (RF, FF as per standard) |
| Size Range | DN15 – DN200 (½” – 8”) |
| Pressure Rating | PN1.6 / PN2.5 / PN4.0 / PN6.4 MPa |
| Design Standard | Compliant with GB/T & marine industry practices (full details available upon request) |
| Working Temperature | -10°C to +200°C (customizable range available) |
| Testing | Hydrostatic shell test 1.5x rated pressure, seat test 1.1x |
Advantages for Marine Pump Outlet Systems
- Prevents Water Hammer: The integrated check function closes automatically when flow reverses, protecting pumps and piping from sudden pressure surges.
- Throttling Capability: The globe portion allows precise flow control during pump startup or shutdown.
- Reduced Leak Paths: One valve instead of two means fewer potential leak points, enhancing system reliability.
- Simplified Maintenance: Only one valve to inspect and service, saving time and spare part inventory.
- Certified Quality: Manufactured under ISO9001 quality management system, ensuring consistent performance.
Shanghai Zhibang Valve has been an ISO9001 certified manufacturer since our establishment in 2016, with annual export values reaching US$1–1.5 million. Our products are trusted by clients across North America, South America, Europe, Asia, Africa, and Oceania. We ship from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery. Every Combined Globe Check Valve undergoes rigorous testing before leaving our facility. We are confident that our valve will deliver long service life and trouble-free operation in your marine pump outlet application. For detailed pricing, custom sizes, or technical questions, please contact our sales team — we are ready to support your project from design to installation.
Frequently Asked Questions (FAQ)
Q1: Can this valve be used for seawater applications?
A: Yes, the cast steel body can be coated with anti-corrosion materials upon request. For direct seawater contact, we recommend specifying a stainless steel trim or additional coating. Please consult our engineers for the best material selection.
Q2: What is the difference between a combined globe check valve and a standard check valve?
A: A standard check valve only prevents backflow, while a combined globe check valve also allows flow regulation (throttling) and positive shut-off. It is ideal for pump discharge lines where both functions are needed.
Q3: What pressure ratings are available for DN200?
A: For DN200, the standard pressure ratings are PN1.6 and PN2.5 MPa. Higher ratings may be available as custom options. Contact our sales team for specific requirements.
Q4: Is the valve suitable for vertical or horizontal installation?
A: Yes, the combined globe check valve can be installed in either vertical (with flow upward) or horizontal orientation. However, for optimal check performance, horizontal installation with the disc hanging freely is recommended. Our technical datasheet provides full guidance.
Q5: Do you provide test certificates or material certificates?
A: Absolutely. Each valve comes with a standard inspection certificate. Material test reports (MTR), hydrostatic test reports, and other documentation are available upon request at no extra cost.
Q6: How long is the lead time for a quantity of 50 units?
A: Typical lead time for standard sizes (DN15-DN100) is 15–20 working days. For larger sizes or custom specifications, please allow 25–30 working days. We can expedite urgent orders subject to stock availability.
Q7: What flange standards are used for connection?
A: Our standard flanges are designed according to GB/T 9113 (PN series). Equivalent standards such as DIN, JIS, or ANSI can be manufactured upon request. Please advise your preferred flange standard when ordering.
Q8: Is the valve suitable for high-viscosity fluids?
A: The combined globe check valve is primarily designed for clean liquids. For viscous or dirty fluids, we recommend consulting our engineers to evaluate seat material and flow path modifications.
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