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Home > Industrial Equipment & Components > Valve > Ball Valve > Cast Steel Marine Trunnion Ball Valve for Large Bore Piping DN100-DN300, PN10 Pressure Rating
Cast Steel Marine Trunnion Ball Valve for Large Bore Piping DN100-DN300, PN10 Pressure Rating
Product Spotlights
Designed for large-bore marine pipelines (DN100-DN300), this cast steel trunnion ball valve ensures reliable, high-flow control with PN10 pressure rating. Its trunnion-mounted design reduces operating torque and wear, extending service life. Features include robust cast steel construction, optional fire-safe design, full port flow, and versatile actuation. Ideal for demanding offshore and marine applications, it offers enhanced safety, durability, and lower lifecycle costs.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Cast Steel
Application:
Other, Marine
Valve Type:
Trunnion Mounted Ball Valve
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Cast Steel
Application
Other, Marine
Valve Type
Trunnion Mounted Ball Valve
Connection Standard
Flanged Ends (Standard)
Size Range (DN)
DN100, DN150, DN200, DN250, DN300
Pressure Rating (PN)
PN10
Operation Method
Manual (Lever/Gearbox), Pneumatic, Electric (Optional)
Seat Material
PTFE, Reinforced PTFE, Metal (Optional)
Fire Safe Design
Available upon request
Temperature Range
Standard: -29°C to 150°C
As a professional valve manufacturer with a strong presence in the global market, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable fluid control solutions for demanding industrial applications. Our Cast Steel Marine Trunnion Ball Valve for large bore piping (DN100-DN300, PN10) is engineered to deliver exceptional performance, durability, and safety in critical marine and offshore environments. Designed for high-flow, high-pressure systems, this valve combines superior sealing technology with a rugged cast steel construction, ensuring long-term, leak-free operation even under the harshest conditions. Trust Zhibang Valve for valves that meet rigorous international standards and provide the operational confidence your projects demand.
This trunnion-mounted ball valve is a cornerstone for large-diameter pipeline applications where reliability is non-negotiable. Its design features a fixed ball supported by a trunnion, which significantly reduces operating torque and seat load, extending the valve's service life. Below are the key features and technical specifications that set our valve apart:
- Robust Construction: The valve body and major components are crafted from high-grade cast steel (e.g., WCB, LCB), offering excellent mechanical strength and corrosion resistance suitable for marine atmospheres and various media.
- Advanced Sealing System: Utilizes multiple-seal-point design. Primary seals are typically PTFE or reinforced PTFE for excellent chemical resistance and low friction. Secondary sealing and emergency injection systems are often incorporated for enhanced safety and maintenance capabilities.
- Low Torque Operation: The trunnion design minimizes friction between the ball and seats, allowing for easier manual operation with a lever or gearbox, and enabling the use of smaller, more cost-effective pneumatic or electric actuators.
- Fire-Safe Option: Available with fire-safe design per API 607/API 6FA or similar standards, where metal-seated versions can provide a secondary seal in case of a fire, preventing catastrophic failure.
- Full Port Design (Standard): Provides a smooth, unrestricted flow path matching the pipeline's internal diameter (DN), minimizing pressure drop and preventing clogging in slurry or viscous fluid services.
- Versatile End Connections: Standard flanged ends (e.g., ANSI, DIN, JIS, GB standards) ensure easy integration into existing large-bore piping systems. Other connection types are customizable.
Here is a summary of key technical parameters for our standard series:
| Parameter | Specification |
|---|---|
| Nominal Diameter (DN) | 100, 150, 200, 250, 300 |
| Pressure Rating (PN) | PN10 (10 bar) |
| Pressure Class (ANSI Equivalent) | Class 150 |
| Body Material | Cast Steel (WCB/LCB) |
| Ball & Trunnion Material | Chrome Plated Carbon Steel or Stainless Steel |
| Seat Material (Standard) | PTFE or Reinforced PTFE (RPTFE) |
| Temperature Range (Standard Seat) | -29°C to 150°C |
| Operation | Manual Lever, Gear Operator, Pneumatic Actuator, Electric Actuator |
| Design Standard | API 6D, ASME B16.34, ISO 17292 |
Benefits for Your Operations:
- Enhanced System Reliability: The trunnion design and robust construction drastically reduce the risk of internal leakage and failure, ensuring continuous operation of your critical marine piping systems, from ballast and bilge lines to fuel transfer and cargo handling.
- Reduced Lifecycle Costs: Lower operating torque means less wear on seals and actuators. The durable materials and design extend maintenance intervals and service life, providing a lower total cost of ownership.
- Operational Safety: Features like a blow-out-proof stem, fire-safe options, and secondary sealing glands contribute to a safer working environment, protecting both personnel and assets.
- Global Compliance & Flexibility: Manufactured under an ISO9001-certified quality management system, our valves are designed to meet major international standards (API, ASME, ISO), facilitating their use in projects worldwide. We also offer customization for specific project requirements.
With a track record of exporting to diverse markets including North America, South America, Europe, Asia, Africa, and Oceania, and an annual export value ranging between US$1 Million to US$1.5 Million, Shanghai Zhibang Valve has established itself as a trusted partner for industrial valve solutions. Our products ship from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring efficient logistics. Choosing our Cast Steel Marine Trunnion Ball Valve means investing in a product backed by nearly a decade of manufacturing expertise, a commitment to quality certified by ISO9001, and a proven ability to serve global clients reliably. This valve is not just a component; it's a guarantee of flow control integrity for your large-bore applications. Contact us today to discuss how this valve can be integrated into your next marine or industrial project.
Frequently Asked Questions (FAQ)
-
Q: What is the main advantage of a trunnion-mounted ball valve over a floating ball valve for large bore applications?
A: For large diameters (like DN100 and above), trunnion-mounted design is preferred because it supports the ball from below, drastically reducing the operating torque and seat load. This leads to easier operation, longer seat life, and allows for the use of smaller, more economical actuators compared to floating ball valves. -
Q: Is this valve suitable for seawater service?
A: The standard cast steel (WCB/LCB) body offers good general corrosion resistance. For prolonged direct seawater exposure, we recommend specifying special coatings (e.g., epoxy) or alternative materials like stainless steel (CF8M/316) for the body and trim, which are available as options. -
Q: Can this valve be supplied with actuators?
A: Yes, absolutely. We can provide the valve pre-assembled with pneumatic (double-acting or spring-return) or electric actuators from reputable brands. The required torque is calculated based on your specific service conditions to ensure proper sizing. -
Q: What are the available flange standards and face types?
A: Standard flanges can be supplied according to ANSI (RF face), DIN (PN10/16), JIS, or GB standards. Raised face (RF) is typical. Other types like ring-type joint (RTJ) or flat face (FF) can be provided upon request. -
Q: Does the PN10 pressure rating refer to the maximum working pressure?
A: PN10 indicates a nominal pressure rating of 10 bar at ambient temperature (around 20°C). The maximum allowable working pressure (MAWP) may vary with temperature according to the material's derating curve as per relevant standards like ASME B16.34. -
Q: Are these valves fire-safe certified?
A: A fire-safe design is an available option. We can supply valves that meet the requirements of API 607, API 6FA, or ISO 10497 standards, which include specific testing for performance during and after exposure to fire. -
Q: What is the typical delivery lead time for an order of DN200 valves?
A: Lead time depends on order quantity, configuration (manual vs. actuated), and current production schedule. For standard configurations, typical lead times range from 4 to 8 weeks. We provide accurate timelines upon receipt of your detailed inquiry. -
Q: Do you provide documentation like test certificates and manuals?
A: Yes, each valve is typically supplied with a manufacturer's data report, which may include material certificates, pressure test reports (shell & seat tests per API 598), and a detailed operation and maintenance manual. Specific certification requirements can be discussed.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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