Huadu Valve Group is based in Wenzhou, China. We make industrial valves that actually hold up in the field. One of our main products is the Large Diameter Ball Valve. We use quality carbon steel or stainless steel for the body, so it can handle high pressure without failing early.
It’s got a full port and reinforced body design. That means flow stays smooth, sealing stays tight, and it lasts for years. Perfect for large pipelines in water conservancy, municipal works, and chemical plants.
We are a seasoned valve maker holding ISO ,CE and API certificates. We have complete production facilities and keep a close check on quality during every production stage. We take OEM and ODM orders, and our MOQ is flexible to suit different project needs. Our large diameter ball valves enjoy a good reputation globally, and our clients always place repeat orders thanks to our consistent quality.
What are the sizes of ball valves?
Ball valves cover a really wide size range to suit different needs. On one end, you’ve got small sizes like DN15 up to DN100 for everyday industrial or plumbing use. DN100 to DN300 are standard sizes for medium pipelines. For larger projects, our regular large diameter ball valves range from DN350 up to DN1200. We can also make custom sizes such as DN1400 or DN1600. Just share your pressure requirements and material needs, and we’ll develop the right valve to match your pipeline.
Which type of valve has a larger diameter?
When you’re talking about really big pipe sizes, large diameter ball valves are the go-to option. But large diameter ball valves are designed with reinforced bodies, heavy-duty seats, and full-port flow paths from the start. They can handle high flow rates without causing too much pressure drop, and their sealing stays reliable even at scale. That’s why they’re the top choice for big water, oil, or gas pipelines.
Key Attributes
Product Type
Large Diameter Ball Valve
Stem Material
A182 F304 / A182 F316 / 13Cr
Design Standard
API 6D / ASME B16.34
Seat Material
Stellite Hardfaced / PTFE / RPTFE
Face to Face Dimension
ASME B16.10
Gasket Type
Spiral Wound Gasket / RTJ Gasket/ Graphite Gasket
Flange Standard
ASME B16.5 / ASME B16.47
Operation Mode
Handwheel, Gear Operated, Electric Actuator, Pneumatic Actuator, Hydraulic Actuator
Pressure Class
Class 150 / 300 / 600 / 900 / 1500
End Connection
Flanged, Welded (BW/SW)
Nominal Size (NPS)
1/2" ~ 48"
Design Type
Trunnion Mounted Ball, Bolted Bonnet
Body Material
A216 WCB / CF8 / CF8M
Temperature Range
-29℃ ~ 200℃ for soft seat; -29℃ ~ 425℃ for metal hard seat
Bonnet Material
A216 WCB / CF8 / CF8M
Applicable Medium
Water, Oil, Gas, Steam, General Industrial Medium
Ball Material
A105+Hardfaced / F304 / F316
Testing Standard
API 598 / Hydrostatic Shell & Seat Test
What is the largest ball valve?
The maximum size you can get really depends on the manufacturer’s equipment and engineering capacity. At Huadu Valve Group, we regularly produce large diameter ball valves up to DN1200 for projects around the world. For one-off, extra-large projects—like major municipal water lines or large industrial facilities—we’ve also worked on custom designs beyond DN1200, as long as we can meet the pressure rating, material, and structural safety requirements. It’s not just about making it big; it’s about making sure it works safely and reliably in the field.
Which valve is often used for large pipe diameters?
Large diameter ball valves are widely used for big pipeline systems in many industries. You can find them in water treatment sites, municipal water supply lines, oil & gas pipelines and chemical factories. They deliver great flow performance, solid sealing and long working life all at once. Many other valves become cumbersome and tricky to use in large sizes, but our ball valves work efficiently and are simple to maintain. They are always a reliable and practical pick for large pipeline projects.
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