Stop costly sizing errors. Get precise ANSI B16.5, API 608 dimensional data and factory-direct custom engineering support for your next project.
✓ ISO 9001 • CE/PED • API 607 • 15,000+ valves supplied to North America
Every year, procurement and engineering teams face costly delays because of mismatched specifications. Sourcing a flanged ball valve seems straightforward—until it doesn't fit the pipeline. Here are the most common pitfalls we help our customers avoid:
A Class 150 flange from one supplier may look different from another. Without strict adherence to ANSI B16.5, you risk bolt-hole misalignment, leading to expensive on-site rework and downtime.
Tight piping systems leave no room for error. A deviation of just 2 mm in the face-to-face dimension can render a valve uninstallable, delaying your entire project timeline.
Choosing a valve with a reduced bore without proper flow calculations can choke your system, increasing energy costs and reducing equipment lifespan.
Not all "standard" dimensions are created equal. Without a reliable partner, you may receive valves that fail pressure tests or have incompatible wall thicknesses.
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➜ The solution? A supplier that provides certified, traceable dimensional data for every valve—before you buy.
At Ningjin Thriveon Valve Co., Ltd., we manufacture flanged ball valves that strictly conform to API 608, ANSI B16.5, and ISO 17292. Whether you need standard sizes or custom dimensions for a retrofit, our engineering team delivers absolute precision.
Below are typical dimensions for our standard floating and trunnion ball valves. Note: Always request a certified drawing for your specific order.
| Size (NPS) | Pressure Class | Face-to-Face (mm) | Bore Diameter (mm) | Flange O.D. (mm) | No. of Bolt Holes | Bolt Hole Dia. (mm) |
|---|---|---|---|---|---|---|
| 2" | 150 | 178 | 38 | 150 | 4 | 19 |
| 3" | 150 | 203 | 76 | 190 | 4 | 19 |
| 4" | 150 | 229 | 102 | 230 | 8 | 19 |
| 6" | 150 | 394 | 152 | 280 | 8 | 22 |
| 8" | 150 | 457 | 200 | 345 | 12 | 22 |
| 10" | 150 | 533 | 252 | 405 | 12 | 25 |
| 12" | 150 | 610 | 303 | 485 | 12 | 25 |
ⓘ Custom dimensions (Class 300, 600, 900) and special end-to-end lengths available. Contact engineering at +86-311-86935302.
Thriveon has supplied over 15,000 flanged ball valves to North American markets in the past 5 years. Our dimensional accuracy rate stands at 99.98% across all batches.
Key Clients: Serving major EPCs, chemical plants, and oil & gas operators across the USA, Saudi Arabia, South Africa, and Italy.
A: A standard 6" Class 150 flanged ball valve per API 608 has a face-to-face dimension of 394 mm (15.5 in.) and a flange diameter of 280 mm (11 in.) per ANSI B16.5. Always verify with the manufacturer's certified drawing.
A: Yes. Our on-site engineering team has extensive experience reverse-engineering legacy dimensions. Typical lead time for a custom dimensional run is just 4–6 weeks.
A: Higher pressure classes (e.g., Class 600 vs. 150) require thicker flanges, heavier wall bodies, and more machining time, which directly increases the base material and manufacturing cost.
A: A full bore (full port) valve has a bore diameter almost equal to the pipe's inner diameter, minimizing pressure drop. A reduced bore valve has a smaller diameter, which is often more economical but slightly restricts flow.
A: Standard sizes are available instantly in AutoCAD and PDF format. For custom dimensions, our engineering team will prepare certified drawings within 24–48 hours.
Mark T. ★★★★★
Procurement Manager, Texas Oil & Gas
"We switched to Thriveon for our standard Class 150 flanged ball valves. The dimensional consistency batch-to-batch is excellent—completely eliminated our installation headaches."
Sarah L. ★★★★★
Plant Engineer, Chemical Manufacturing (Louisiana)
"The custom flanged ball valve dimensions for our retrofit project were perfect. Thriveon's engineering team made the entire process seamless, from drawing to delivery."
David R. ★★★★★
Supply Chain Director, Industrial Valve Distributor
"As a distributor, having a supplier that strictly adheres to ANSI B16.5 is crucial. Thriveon's quality control and on-time delivery have made them a key partner for our business."
Senior Valve Engineer & Global Supply Chain Specialist
With over 15 years in industrial valve manufacturing and global sourcing, Liam specializes in helping North American EPCs and plant managers select the correct dimensions for critical flow control applications. He has personally overseen the production of over 50,000 valves for the US, European, and Middle Eastern markets.
Ningjin Thriveon Valve Co., Ltd. | South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei, China | Contact Page
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Call us on:
+86-311-86935302
+86-311-86935302
Email Us:
info@thriveonvalve.com
South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei Province, China 
