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Help CenterFlanged Cast Iron Gate Valve for Marine Applications, Pressure Rating PN10/PN16
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As a specialized manufacturer with a strong focus on the marine industry, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our robust Flanged Cast Iron Gate Valve, engineered specifically for demanding marine and offshore applications. With our ISO9001 certified production processes and years of experience supplying global maritime sectors, we deliver valves that combine reliability, durability, and precise flow control in corrosive saltwater environments. This valve is designed to meet the rigorous pressure requirements of PN10 and PN16, making it a dependable choice for seawater cooling systems, ballast control, fire mains, and various onboard piping networks.
Our Flanged Cast Iron Gate Valve stands out in the marine valve market due to its thoughtful design and construction tailored for longevity at sea. The choice of cast iron for the valve body provides excellent strength and corrosion resistance, a critical factor when exposed to constant moisture and saline atmospheres. The flanged ends ensure a secure, leak-proof connection to piping systems, facilitating easier installation and maintenance—a significant advantage during shipyard operations or onboard repairs. The valve utilizes a rising stem design with a handwheel operation, offering clear visual indication of the valve position (open or closed), which is a vital safety and operational feature. The wedge or gate inside the valve is meticulously machined to provide a tight seal when closed, ensuring zero leakage for critical isolation applications.
Key Technical Specifications & Advantages:
- Superior Material Compatibility: The cast iron body is often coated or treated for enhanced marine corrosion protection. Internal trim components like the seat and stem are available in bronze or stainless steel options, providing excellent wear resistance and compatibility with seawater.
- Robust Pressure Handling: Rated for PN10 (10 bar) and PN16 (16 bar) pressure classes, this valve is built to withstand the operational pressures commonly found in marine piping systems without failure.
- Broad Size Availability: We offer a comprehensive range of sizes to fit various system designs, typically from DN50 (2 inches) up to DN600 (24 inches), accommodating everything from auxiliary lines to main seawater intakes.
- Standard Compliance: The valve is manufactured to align with international standards such as ISO, DIN, and ANSI, ensuring global interchangeability and acceptance in shipbuilding and repair yards worldwide.
- Easy Operation & Maintenance: The handwheel design allows for manual operation without the need for external power sources. The flanged design permits straightforward removal for inspection or servicing, minimizing vessel downtime.
The benefits for your marine projects are substantial. By choosing our valve, you secure a component that enhances system reliability, reduces the risk of costly leaks or failures at sea, and simplifies maintenance schedules. Its standardized design ensures spare parts are readily available, and its proven construction contributes to the overall safety and efficiency of the vessel's fluid handling systems.
| Parameter | Specification / Option |
| Body Material | Cast Iron (GG25/GGG40) |
| Pressure Rating | PN10, PN16 |
| Temperature Range | -20°C to +120°C |
| Connection | Flanged (RF face common) |
| Operation | Handwheel (Rising Stem) |
| Seat Material | Bronze or Stainless Steel (Optional) |
| Stem Material | Stainless Steel |
| Packing | Graphite / PTFE |
| Size Range (DN) | 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600 |
| Coating / Finish | Epoxy Coating available for enhanced corrosion protection |
Shanghai Zhibang Valve backs its products with the credibility of an established manufacturer. Since our founding in 2016, we have built a strong export footprint, delivering valves worth between US$1 Million and US$1.5 Million annually to key maritime regions including North America, Europe, Southeast Asia, and the Middle East. Our products ship from major Chinese ports like Shanghai, Guangzhou, and Hong Kong, ensuring efficient logistics for global clients. This valve is not just a component; it's a part of a reliable supply chain trusted by shipyards and vessel operators worldwide. Its design prioritizes the harsh realities of marine service, offering a balance of performance, durability, and value that protects your investment and ensures operational continuity.
Frequently Asked Questions (FAQ):
Q1: Is this cast iron valve suitable for full immersion in seawater?
A: While the cast iron body offers good corrosion resistance, for full immersion or highly aggressive service, we recommend specifying an epoxy-coated body or exploring our ductile iron or bronze valve options for such extreme conditions.
Q2: What flange standards do you manufacture to?
A: Our valves are commonly produced with standard Raised Face (RF) flanges compliant with ISO, DIN, or ANSI B16.5 standards. The specific standard can be confirmed at the time of order to match your existing piping.
Q3: Can this valve be operated remotely or automatically?
A: This specific model is designed for manual handwheel operation. However, we can provide gate valves equipped with pneumatic or electric actuators upon request for automated control systems.
Q4: What is the lead time for an order of DN200 valves?
A: Lead times vary based on quantity and specific configuration. Generally, for standard sizes and materials, production can be completed within 4-6 weeks. We recommend contacting our sales team with your detailed requirements for an accurate schedule.
Q5: Do you provide documentation like test certificates and material reports?
A: Yes, as an ISO9001 certified manufacturer, we can provide standard documentation including pressure test certificates and material chemical composition reports. More detailed certification packages are available upon request.
Q6: How does the PN10/PN16 rating compare to ANSI pressure classes like 150#?
A: PN10 is approximately equivalent to ANSI Class 150 for certain size ranges, and PN16 is slightly higher. It's important to consult pressure-temperature charts for precise conversion based on your service conditions.
Q7: Is the valve suitable for potable water service on a vessel?
A: With standard materials, it is generally suitable. For potable water, we recommend specifying stainless steel trim and ensuring the internal coatings are potable water approved. Please inform us of this application requirement.
Q8: What kind of after-sales support do you offer?
A: We provide technical support for installation and operation. Spare parts like gland packing, gaskets, and seals are available for long-term maintenance. Our warranty covers material and workmanship defects under normal use.
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