Contact Platform Support
Help CenterMarine Trunnion Ball Valve With Large Bore DN300, Cast Steel Construction, PN16 Design Pressure
Product Spotlights
Related Products
-
Marine Pipeline Trunnion Ball Valve for Offshore Platform Firewater Systems, DN250NegotiableMOQ: 1 Unit -
Marine Floating Ball Valve Full Bore, Supplied With Mill Test Report and Full Material Traceability DocumentationNegotiableMOQ: 1 Unit
-
Marine Floating Ball Valve Full Bore, Specified for Shipboard Firefighting and Seawater Cooling Pipe NetworksNegotiableMOQ: 1 Unit
-
304/316 Stainless Steel Marine Full Bore Floating Ball Valve, Fire Safe API 607 Certified, Low Torque OperationNegotiableMOQ: 1 Unit
-
Full Bore Floating Ball Valve for Marine Cargo and Ballast Systems, Ensuring Unrestricted Flow and Rapid OperationNegotiableMOQ: 1 Unit
As a leading manufacturer with a strong commitment to quality and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Marine Trunnion Ball Valve with Large Bore DN300. Engineered for demanding marine and offshore applications, this valve combines robust cast steel construction with a high-performance trunnion-mounted design to ensure secure, long-lasting flow control in critical piping systems. Our years of expertise since 2016 in serving global markets, from North America to Southeast Asia, are embedded in every valve we produce, focusing on durability, safety, and operational efficiency for our clients. This specific model is crafted to handle the rigorous conditions of shipboard service, offering a reliable solution for main lines, cargo handling, and other high-pressure marine functions where failure is not an option.
The core of this valve's performance lies in its trunnion-mounted ball design. Unlike floating ball valves, the ball is fixed and supported by trunnions at the top and bottom. This design significantly reduces operating torque, minimizes seat wear, and provides exceptional stability, making it ideal for large-diameter, high-pressure applications like our DN300 PN16 model. The large bore (full bore) design ensures minimal pressure drop and allows for the passage of pipeline pigs, which is crucial for maintenance in long-distance pipelines or ship systems.
Constructed from high-grade cast steel, the valve body offers superior strength and excellent resistance to corrosion and mechanical stress in marine environments. The primary sealing components, such as the seats, are typically made from advanced polymers like PTFE or reinforced PTFE, providing a tight seal, low friction, and good chemical resistance. For enhanced safety in potential fire scenarios, fire-safe design versions compliant with standards like API 607/API 6FA are available upon request.
Key Technical Specifications & Advantages:
- Low Operational Torque: The trunnion support system drastically lowers the torque required to operate the valve, allowing for the use of smaller, more cost-effective actuators or manual gearboxes.
- Reduced Seat Wear & Extended Life: The fixed ball design prevents the ball from shifting under pressure and grinding against the seats, leading to longer service intervals and lower maintenance costs.
- Bidirectional Sealing & Block-and-Bleed Capability: Provides reliable sealing in both flow directions. Many models offer a dual-seal, block-and-bleed function for isolating sections of a pipeline and safely venting the cavity.
- Robust Construction for Harsh Conditions: The cast steel body and critical components are designed to withstand vibration, water hammer, and the corrosive effects of seawater and marine atmospheres.
- Versatile Actuation Options: While supplied as a standard manual valve (with a handwheel or lever), it can be easily fitted with pneumatic, hydraulic, or electric actuators for remote or automated control systems.
The table below outlines some primary specifications for this valve series. Please note that specific configurations can be customized.
| Parameter | Specification |
|---|---|
| Size Range (Highlighted) | DN300 (12") - Other sizes from DN50 to DN600 available |
| Pressure Rating | PN16 (16 bar) - Classes 150, 300 also customizable |
| Body Material | Cast Steel (WCB, LCB, etc.) |
| Ball & Stem Material | Stainless Steel (e.g., SS304, SS316) or coated carbon steel |
| Seat & Seal Material | PTFE, Reinforced PTFE, Nylon, PEEK (Optional) |
| End Connection | Flanged (RF, RTJ per ASME/EN/DIN standards) |
| Temperature Range | -29°C to +200°C (dependent on seat material) |
| Operation | Manual (Lever/Gearbox), Pneumatic, Hydraulic, Electric |
For ship owners, offshore platform operators, and pipeline contractors, the benefits are clear. This valve delivers enhanced safety through its reliable sealing and robust build. It contributes to lower total cost of ownership via reduced maintenance needs and long service life. Its operational efficiency is boosted by easy actuation and minimal flow restriction. Furthermore, its design compatibility with international standards ensures seamless integration into existing global marine and industrial systems.
Shanghai Zhibang's commitment to excellence is backed by our ISO9001 certification, ensuring consistent quality control throughout our manufacturing process. With an annual export value reflecting our growing global trust, we efficiently serve clients across six continents from our strategic location in Shanghai, utilizing major ports like Shanghai, Guangzhou, and Hong Kong for prompt shipment. Our valve is not just a component; it's a dependable partnership for your critical infrastructure. We invite you to contact us for a detailed quotation, technical drawings, or to discuss customizing this robust DN300 Trunnion Ball Valve to meet your specific project requirements with precision and reliability.
Frequently Asked Questions (FAQ):
-
Q: What is the main advantage of a trunnion-mounted ball valve over a floating ball valve for large sizes like DN300?
A: For large diameters and higher pressures, the trunnion design is superior. It supports the ball on fixed trunnions, drastically reducing operating torque and preventing excessive seat wear, which are common challenges with floating ball valves in such applications. -
Q: Is this valve suitable for seawater service?
A: Yes, when configured with appropriate materials. The standard cast steel body offers good general corrosion resistance. For direct seawater contact, specifying stainless steel trim (ball, stem) and suitable seat materials is recommended to enhance corrosion resistance. -
Q: Can this valve be automated?
A: Absolutely. The valve is designed with a standardized mounting pad to easily accommodate pneumatic, hydraulic, or electric actuators. This allows for integration into remote-controlled or automated process systems. -
Q: What does "Large Bore" or "Full Bore" mean, and why is it important?
A: "Full Bore" means the internal diameter of the valve opening matches the internal diameter of the connecting pipeline (for DN300, it's ~300mm). This minimizes flow resistance (pressure drop) and allows for the passage of cleaning pigs, which is essential for pipeline maintenance. -
Q: What pressure classes are available besides PN16?
A> While PN16 is a standard offering, this valve design can be manufactured for other common pressure classes such as Class 150 (PN20) and Class 300 (PN50). The specific class depends on design, material, and testing. -
Q: Do you provide fire-safe certified versions?
A: Yes, fire-safe design is a key option. Valves can be manufactured and tested to meet recognized fire-safe standards like API 607, API 6FA, or ISO 10497, which include secondary metal sealing features to maintain sealing in a fire event. -
Q: What is the typical delivery time for a DN300 valve?
A: Delivery time varies based on order quantity, specific configuration, and material availability. Standard models may have a shorter lead time, while customized versions require more. We provide estimated timelines upon receipt of detailed inquiries. -
Q: What documentation is provided with the valve?
A> Standard documentation includes a material test certificate, pressure test report, and general assembly drawings. Additional certifications, such as fire test reports or third-party inspection reports, can be arranged upon request.
Send Inquiry to This Supplier
You May Also Like
-
Full Bore Floating Ball Valve for Marine Applications, Cryogenic to High-Temperature Service, Extended Bonnet DesignNegotiableMOQ: 1 Unit
-
Standard Compliant Marine L/T Port Three Way Ball Valve With Technical Support AvailableNegotiableMOQ: 1 Unit
-
Marine Three Way Ball Valve Supplied With Mill Test Report and 2-Year WarrantyNegotiableMOQ: 1 Unit
-
T Port Marine Three Way Ball Valve for Bilge Pump and Tank Selector Systems OnboardNegotiableMOQ: 1 Unit
-
Marine Grade Three Way Ball Valve, L Port and T Port Options, Flanged ConnectionNegotiableMOQ: 1 Unit
-
Marine Three Way Ball Valve L Port for HVAC System Seawater Cooling Line DiversionNegotiableMOQ: 1 Unit
-
Forged Brass Marine Three Way Ball Valve With T Port Configuration, Threaded EndsNegotiableMOQ: 1 Unit
-
Marine Three Way Ball Valve for Flow Diversion, L Port Design, Manual Lever OperationNegotiableMOQ: 1 Unit
-
Marine L Port T Port Three Way Ball Valve With Pneumatic Actuator for Automated Flow ControlNegotiableMOQ: 1 Unit
-
Marine Ball Valve For Ship HVAC System With Electric Actuator For Remote ControlNegotiableMOQ: 1 Unit
