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Help CenterLarge Bore Marine Trunnion Ball Valve Supplied With Mill Test Report and 2-Year Warranty
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As a professional manufacturer with ISO9001 certification and a strong presence in global markets from North America to Southeast Asia, Shanghai Zhibang Valve Manufacture Co., Ltd. is dedicated to providing reliable and high-performance fluid control solutions. Our Large Bore Marine Trunnion Ball Valve is engineered for critical applications where safety, durability, and zero leakage are non-negotiable. Supplied with a comprehensive Mill Test Report (MTR) for full material traceability and backed by a solid 2-Year Warranty, this valve represents our commitment to quality and customer confidence. It is designed to withstand the harsh conditions of marine and offshore environments, offering superior sealing performance and long service life.
This valve is built to handle demanding services with precision and reliability. Below are its key features and technical specifications:
- Robust Trunnion Design: The trunnion-mounted ball is supported at the top and bottom, reducing operating torque and minimizing seat wear, especially in large bore sizes and high-pressure applications. This design ensures stable operation and extends valve life.
- Superior Sealing System: Features a dual-seal or triple-seal (in fire-safe versions) design. The primary seals, often made from advanced polymers like reinforced PTFE, provide bubble-tight shut-off. Secondary metal seals engage automatically in case of fire or primary seal failure, meeting stringent safety standards.
- Full Material Traceability: Every valve is accompanied by a Mill Test Report (MTR) that documents the chemical composition and mechanical properties of all major components (body, ball, stem, seats). This ensures compliance with specified material grades and provides complete quality assurance.
- Versatile Configuration: Available in a wide range of sizes, pressure classes, and material combinations to suit specific project requirements. Actuation options include manual lever, gearbox, and automated systems (pneumatic/electric).
- Anti-Static & Fire-Safe: Equipped with an anti-static device to prevent sparking from static electricity. Fire-safe design per API 607/6FA is available as an option, ensuring the valve maintains sealing integrity under extreme fire conditions.
- Extended Service Life: The low-friction design of the trunnion and seat system, combined with high-grade materials, results in minimal maintenance needs and superior resistance to corrosion and erosion.
The technical specifications for standard configurations are summarized in the table below. Customizations are available upon request.
| Parameter | Specification / Option |
|---|---|
| Size Range (Bore) | DN 50 (2") to DN 1200 (48") and larger |
| Pressure Class | ASME Class 150, 300, 600, 900, 1500, 2500 |
| Body Material | A216 WCB, A352 LCB, A351 CF8/CF8M, Duplex, Super Duplex |
| Seat & Seal Material | PTFE, RPTFE, PEEK, Metal (Inconel, Stellite) |
| End Connection | RF Flange, RTJ Flange, Butt Weld (BW) |
| Design & Test Standards | API 6D, ASME B16.34, API 598 |
| Temperature Range | -46°C to +200°C (Standard); Extended ranges available |
| Operation | Manual (Lever/Gear), Pneumatic Actuator, Electric Actuator |
For clients, the benefits are clear and substantial. The valve's reliable sealing minimizes product loss and environmental risk. The reduced maintenance and long service interval lower the total cost of ownership. The inherent safety features (fire-safe, anti-static) protect personnel and assets. Furthermore, the provided MTR simplifies documentation for regulatory compliance and quality audits, while the 2-Year Warranty offers peace of mind and protects your investment.
With an annual export value ranging between US$1 Million and US$1.5 Million and a proven track record since 2016, Shanghai Zhibang has established itself as a trusted partner for valves in over a dozen major global markets, including North America, Western Europe, and Southeast Asia. Our ISO9001-certified manufacturing processes guarantee consistent quality. The combination of our comprehensive Mill Test Report and a confident 2-Year Warranty is a testament to the durability and performance we build into every Large Bore Marine Trunnion Ball Valve. We invite you to experience the Zhibang difference—contact us today to discuss your project specifications or to request a detailed quotation.
Frequently Asked Questions (FAQ)
Q1: What is the main advantage of a trunnion-mounted ball valve over a floating ball valve for large bore applications?
A: The trunnion design provides crucial mechanical support to the ball, drastically reducing the operating torque required, especially in high-pressure, large-diameter scenarios. This leads to smaller, more cost-effective actuators and significantly less wear on the valve seats, enhancing longevity and reliability.
Q2: What exactly is included in the Mill Test Report (MTR)?
A: The MTR is a certified document from the material mill. For our valves, it typically includes the heat number, chemical analysis, and mechanical test results (yield strength, tensile strength, elongation) for the primary pressure-containing parts like the valve body, ball, and stem, ensuring they meet the ordered specifications (e.g., ASTM A105, A182 F316).
Q3: Does the 2-Year Warranty cover all parts and failures?
A: The warranty covers defects in materials and workmanship under normal service conditions as specified in the valve's data sheet. It covers the main valve components. Damage due to improper installation, operation outside design limits, or use with incompatible media is not covered. Full warranty terms are provided with the product.
Q4: Are these valves suitable for sour service (H2S environments)?
A: Yes, we can supply valves compliant with NACE MR0175/ISO 15156 standards for sour service. This requires specific material grades, heat treatment, and hardness controls. Please specify this requirement during inquiry so we can configure the valve accordingly.
Q5: Can you provide valves with actuators as a complete package?
A: Absolutely. We offer integrated packages with pneumatic (double-acting or spring-return) or electric actuators from reputable brands. The assembly is tested as a complete unit to ensure proper interface and operation before shipment.
Q6: What is the typical lead time for a custom large bore valve?
A: Lead time depends on size, material, pressure class, and customization level. For standard configurations in common materials, it can range from 8 to 12 weeks. We provide a firm delivery schedule upon order confirmation.
Q7: How do you ensure the fire-safe performance of the valve?
A: For fire-safe designated valves, we use specific seat designs (often metal secondary seals) and materials that can withstand high temperatures. The valves are manufactured and tested in accordance with API 607 or API 6FA standards, which involve rigorous fire testing protocols.
Q8: What ports do you ship from, and what are the payment terms?
A> We primarily ship from major Chinese ports like Shanghai, Guangzhou, and Hong Kong. Standard payment terms are 30% T/T deposit with order, 70% balance against copy of Bill of Lading. Other terms like LC are negotiable based on order value and customer history.
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