In high-pressure or large-diameter pipelines, the "floating" ball design can lead to excessive torque and seat wear. Our Trunnion type ball valve (Q341F-16C) addresses this by securing the ball between a top stem and a bottom trunnion plate. This design ensures that the force of the pipeline pressure is absorbed by the valve body rather than the seats, allowing for much lower operating torque and a significantly longer service life. This Trunnion type ball valve is the industry standard for natural gas transmission, oil storage, and high-pressure petrochemical processes.
At Suhao Valve, we utilize specialized self-lubricating bearings to ensure the Trunnion type ball valve operates smoothly even after long periods of inactivity. The spring-loaded seats provide a "Double Block and Bleed" (DBB) capability, allowing for a tight seal on both the upstream and downstream sides. Drawing on our 30-year legacy of manufacturing precision, we use high-precision internal grinders to ensure the concentricity of the trunnion assembly within 0.02mm, guaranteeing zero-leakage performance for the most demanding energy projects.
Technical Specifications
Model: Q341F-16C (Trunnion Mounted)
Design Standard: API 6D / ASME B16.34
Pressure Rating: PN16 - PN100 / Class 150 - 600
Body Material: WCB, A105, LCC, CF8M
Seat Type: Soft seated (PTFE/PEEK) or Metal seated
Application Areas
- Oil & Gas: Long-distance transmission pipelines and gas stations.
- Refining: High-pressure crude oil and fuel processing.
- Petrochemical: Critical isolation valves for chemical reactors.
Factory Customization & Strength
Our manufacturing base is equipped with heavy-duty CNC gantry boring machines and dedicated internal grinding centers for trunnion balls. We offer full customization for the Trunnion type ball valve, including emergency sealant injection ports, anti-static designs, and fire-safe testing (API 607). We maintain a strategic inventory of large-bore forged blanks to ensure we can meet project deadlines that other factories simply cannot.
Quality Control & After-Sales
Each Trunnion type ball valve undergoes high-pressure nitrogen testing and hydrostatic shell testing. We provide full material traceability and a 12-month quality guarantee. Our after-sales team is available 24/7 to provide technical guidance on-site or via remote link for large-scale installations and maintenance.
FAQ
Q: What is the benefit of a trunnion design?
A: It allows for much easier operation of large valves under high pressure and reduces seat wear, extending the valve's life.
Q: Can this valve be buried?
A: Yes, we can provide extended stems and specialized coatings for buried oil and gas service.
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