Products
Reduced Bore Flanged Trunnion Ball Valve
Reduced Bore Flanged Trunnion Ball Valve
Engineered in strict compliance with API 6D and ASME standards, our Reduced Bore Flanged Trunnion Ball Valves offer a highly cost-effective, premium-grade solution for heavy-duty pipeline isolation. By optimizing internal geometry and leveraging advanced manufacturing techniques, this valve significantly reduces structural weight and actuator torque requirements-delivering maximum system safety and cost efficiency without compromising sealing integrity.
Quick Technical Specifications
|
Parameter |
Specification Standard |
|
Design & Manufacture |
API 6D / ASME B16.34 / ISO 17292 |
|
Size Range |
2" to 24" (DN50 – DN600) |
|
Pressure Ratings |
ASME Class 150, 300, 600, 900, 1500 |
|
Flange Dimensions |
ASME B16.5 / ASME B16.47 Series A or B / EN 1092-1 |
|
Testing & Inspection |
API 598 / API 6D |
|
Fire-Safe Certification |
API 607 / API 6FA (Optional Configuration) |
|
Material Traceability |
EN 10204 3.1 Mill Test Certificate (MTC) provided as standard |
Engineering Design Advantages
Trunnion-Mounted Ball Structure for Low Operating Torque
The ball is mechanically anchored by upper and lower trunnions, which completely absorb differential pressure forces. This design prevents the ball from being displaced into the downstream seat under high line pressure.
Why it matters for buyers: It drastically reduces the required torque profile, allowing procurement teams to specify smaller, less expensive electric or pneumatic actuators, lowering both initial Capital Expenditure (CAPEX) and long-term operational energy costs.
Reduced Bore Design for Cost and Weight Optimization
The internal flow passage is engineered to be one nominal size smaller than the pipeline diameter, maximizing material efficiency without sacrificing structural longevity.
Engineering Impact: Lower material usage (forging, steel, and machining time) translates directly into a reduced valve weight, which simplifies job-site logistics, eases installation, and yields a lower procurement cost per unit in bulk orders.
Transparency Note: Please note that reduced bore valves introduce a minor pressure drop compared to full-bore designs and are not recommended for pipelines requiring active pigging or mechanical cleaning pigs.
Flanged End Connection
Flanged ends ensure a rigid, leak-resistant connection to pipeline systems, fully standardized to eliminate the need for specialized on-site welding.
Procurement Advantages: Guarantees drop-in replacement in existing flanged pipelines, minimizing system downtime during maintenance turnarounds.
Dual-Direction Sealing & Industrial Safety Features
Bidirectional Sealing System: Soft or metal-seated structures provide tight shut-off performance in both flow directions, preventing backflow leakage in reversing pressure conditions.
Anti-Blowout Stem & Anti-Static Design: The stem is mechanically retained to prevent accidental ejection under internal pressure, while integrated anti-static devices ensure electrical continuity-crucial for mitigating fire hazards in volatile petrochemical environments.
Materials & Manufacturing Quality Control
Typical Material Configurations
- Carbon Steel: ASTM A216 WCB, WCC, LCB, LCC (for low-temperature service)
- Stainless Steel: ASTM A351 CF8, CF8M, CF3, CF3M
- Alloy Steel: High-temperature/high-pressure specialty alloys upon project request
Manufacturing Rigor & Real-World Expertise
Every valve is processed in our state-of-the-art facility, undergoing individual precision CNC machining for sealing surfaces to achieve micron-level tolerances. We enforce a zero-defect policy with 100% compliant testing prior to dispatch, including:
- Hydrostatic shell testing and High/Low-pressure gas seat leakage testing (API 598 / API 6D)
- Positive Material Identification (PMI) verification
- Complete dimensional and wall-thickness checks
Performance Benefits for B2B & Wholesale Buyers
Lower Total Installed Cost (TIC): By minimizing both valve weight and actuator sizing, procurement teams achieve compounding savings across shipping, structural pipe supports, and automation hardware.
Streamlined Inventory Standardization: Standardized flanged dimensions and versatile pressure classes allow stockists and distributors to hold fewer product variants while servicing a broader range of regional project requirements.
EPC Acceptance: Fully traceable manufacturing with standard EN 10204 3.1 MTCs ensures frictionless approval during the technical submittal phase of international tender processes.
FAQ
Q: What is the primary commercial advantage of a reduced bore vs. a full bore valve?
A: Reduced bore valves utilize less raw material and require lower machining labor, making them significantly more cost-effective and lighter than full bore alternatives, while still delivering reliable isolation for standard fluid transmission.
Q: Why is the trunnion-mounted design preferred over a floating ball design for larger sizes?
A: Floating balls rely on line pressure to push the ball against the seat, which creates massive friction and high torque requirements at larger sizes. Trunnion mounting fixes the ball's position, resulting in smooth rotation, lower torque, and extended seat life under high differential pressures.
Q: Can these valves be supplied with full material traceability for major EPC projects?
A: Yes. All pressure-containing forgings and castings are backed by certified Mill Test Reports (MTR) according to EN 10204 3.1, ensuring comprehensive chemical and mechanical traceability from the foundry to the final assembly.
Q: Is it possible to customize the flange face, material grade, or testing protocols?
A: Absolutely. We regularly accommodate specific EPC project specifications, including custom hard-facing (Stellite® coating), specialized alloy selections, RTJ flange faces, and advanced NDT (Non-Destructive Testing) options like RT, UT, and MPI.
Q: Do you support Third-Party Inspection (TPI) prior to shipment?
A: Yes, we welcome international third-party inspection agencies such as SGS, Bureau Veritas (BV), TÜV, or DNV. We routinely coordinate with TPI inspectors for visual, dimensional, witness pressure testing, and document review to ensure compliance before leaving our plant.
Q: What is the typical lead time for standard bulk wholesale orders?
A: Standard configurations within our standard size and pressure ranges typically ship within 4 to 6 weeks. For custom material grades or complex EPC project packages, custom delivery schedules can be tailored to align precisely with your project timeline.
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