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Help CenterStraight Through Globe Check Valve for Marine Systems Cast Steel DN100 PN1.6MPa Manual Operation
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Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium Straight Through Globe Check Valve for Marine Systems – a robust, cast steel valve designed specifically for demanding onboard fluid control applications. Since our establishment in 2016, we have focused on delivering reliable valve solutions to global markets, with annual exports exceeding US$1.5 Million. This valve combines the dual functions of a globe valve (throttling) and a check valve (backflow prevention) in one straight-through body, ensuring minimal pressure drop and stable operation in marine pipelines. Manufactured under strict ISO9001 quality management, our DN100 PN1.6MPa manual globe check valve offers exceptional durability and precise flow regulation, making it an ideal choice for ballast systems, cooling water lines, and fuel oil circuits onboard vessels.
The straight-through design reduces turbulence and erosion compared to traditional angle-type globe valves, extending service life even under continuous high-flow conditions. The handwheel-operated mechanism allows operators to manually open, close, or position the disc for throttling, while the built-in check function automatically prevents reverse flow when the valve is fully open or partially open. With a cast steel body resistant to corrosion and mechanical stress, this valve meets the rigorous safety and performance standards required by marine classification societies (certification available upon request).
Key Features & Technical Advantages
- Dual Functionality: Combines globe valve throttling with automatic check action – eliminates need for separate check valve in many applications.
- Straight-Through Flow Path: Lower pressure drop (approx. 20% less than conventional globe check designs) ensures energy efficiency in pump circuits.
- Manual Handwheel Operation: Direct stem drive with lockable position indicator provides precise flow control and emergency shut-off capability.
- Rugged Cast Steel Construction: ASTM A216 WCB or LCB grades (optional stainless steel) withstand shock loads, vibration, and corrosive marine environments.
- Built-In Check Mechanism: Spring-assisted or gravity-closing disc (based on model) automatically seals when flow reverses, protecting pumps and meters.
- Standard Flanged Ends: Suitable for PN10/PN16/Class 150 flanges, with gasket options for high-temperature services.
- Easy Maintenance: Bolted bonnet design allows quick access to internal parts without removing the valve from the pipeline.
Technical Specifications (Typical)
| Parameter | Value |
| Nominal Diameter | DN100 (4'') |
| Pressure Rating | PN1.6MPa / 16 bar / 232 psi |
| Body Material | Cast Steel (WCB) – optional SS304/316 |
| Disc Material | Cast Steel with PTFE seat (or metal seat) |
| Operation | Handwheel – clockwise to close |
| End Connection | Flanged (RF, RTJ, or FF – upon request) |
| Test Pressure (Shell) | 2.4 MPa (24 bar) |
| Seal Test | 1.76 MPa (17.6 bar) |
| Working Temperature | -20°C to +200°C (expandable with special materials) |
| Suitable Media | Fresh water, seawater, lube oil, fuel oil, compressed air |
Benefits for Your Marine System: The straight-through globe check valve significantly reduces system complexity by integrating two essential functions in one compact unit. This saves valuable space onboard and reduces potential leak points. The manual operation provides positive control, while the automatic check feature safeguards critical equipment from backflow damage. With our customized options (e.g., epoxy coating for seawater resistance, stainless steel trim, or extended stem for deck operation), this valve adapts perfectly to specific vessel requirements.
Our manufacturing facility in Shanghai, China, is equipped with advanced CNC machines and material testing laboratories. Every valve undergoes hydrostatic, pneumatic, and seat leakage tests before shipment. We have successfully supplied these valves to shipbuilders and marine maintenance yards across North America, Europe, Southeast Asia, Africa, and the Middle East. With over 8 years of focused valve production and an annual export value of US$1–1.5 Million, Shanghai Zhibang Valve ensures consistent quality and on-time delivery. We ship via Shanghai, Guangzhou, Hong Kong, or Beijing ports depending on your logistics needs.
Contact our sales team for detailed drawings, material certifications, or a quotation. We offer flexible packaging (plywood cases, pallets) and can arrange third-party inspection (e.g., Lloyd's, DNV) upon request. Join hundreds of satisfied marine engineers who trust Zhibang valves for their critical systems.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between this globe check valve and a standard check valve?
A: A standard check valve only prevents reverse flow; it cannot be used for throttling or shut-off. Our globe check valve combines both functions: you can manually close or partially open the valve to control flow, and it automatically acts as a check valve when flow stops or reverses.
Q2: Can this valve be used for seawater applications?
A: Yes, but we recommend selecting stainless steel trim (SS304 or SS316) and applying an epoxy internal coating for enhanced corrosion resistance. Our standard cast steel body can also accept a PTFE lining. Please specify your seawater service when ordering.
Q3: What is the maximum working pressure for the PN1.6 version?
A: The PN1.6 rating corresponds to a maximum allowable working pressure of 1.6 MPa (16 bar) at ambient temperature. For higher pressures, we offer PN2.5, PN4.0, or Class 150/300 versions.
Q4: Is the valve suitable for horizontal and vertical installations?
A: The standard design is recommended for horizontal pipelines with the handwheel pointing upward. Vertical installation (flow upward) is possible with a spring-loaded disc option. Please consult our engineering team for your specific orientation.
Q5: What type of flanges does the valve have?
A: By default, we supply with raised-face flanges (RF) per EN 1092-1 (PN16) or ASME B16.5 (Class 150). Other flange standards (e.g., JIS, GOST) or facing types (RTJ, FF) are available upon request.
Q6: Do you provide a warranty and after-sales support?
A: Yes, we offer a 12-month warranty against manufacturing defects from the date of shipment. Our technical team is available via email or video call for installation guidance and troubleshooting. Replacement parts can be shipped within one week.
Q7: Can I get a sample order before bulk purchase?
A: Absolutely. We accept sample orders (1–2 pieces) for testing and qualification. Sample cost and shipping charges apply, but they will be deducted from your first bulk order if placed within 3 months.
Q8: What certifications do you have for marine valves?
A: Our factory is ISO9001:2015 certified. For specific marine approvals (e.g., CCS, DNV, ABS, BV), we can arrange production under surveyor supervision and issue third-party certificates at an additional cost. Please inform us of your requirements.
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