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The WCB Flanged Floating Ball Valve for Industrial Use manufactured by Zhejiang Zhongguan Valve Manufacture Co., Ltd. features a split-body carbon steel housing, a floating stainless steel sphere, and end flanges matching global standards. Supported by over 19 years of manufacturing experience and dual production sites in Tianjin and Wenzhou, these valve units strictly comply with API 6D and ASME B16.34 standards for shutoff service across liquid, gas, steam, and hydrocarbon pipelines.
The operational parameters, material standards, and structural options of the WCB Flanged Floating Ball Valve for Industrial Use are listed in the engineering matrix below:
The main body and side adapter are secured via heavy-duty flange bolts, allowing full internal maintenance and seat ring replacement.
Media pressure pushes the polished floating ball downstream into the resilient seat face, creating tight sealing as line pressure rises.
Internal stem insertion with an integral shoulder prevents stem ejection during overpressure conditions.
High-platform design accommodates direct attachment of pneumatic or electric quarter-turn actuators.
The technical design of the WCB Flanged Floating Ball Valve for Industrial Use provides distinct operational benefits in demanding piping networks:
The downstream floating ball mechanism utilizes internal fluid pressure to force the ball against the seat, ensuring zero-leakage shutoff under ANSI Class VI standards.
The ASTM A216 WCB cast steel body withstands physical pipe strain, pressure surges, and continuous working temperatures up to 425°C without structural deformation.
CNC-machined micro-finish balls paired with PTFE/R-PTFE seats minimize friction, reducing operating torque and expanding actuator selection options.
The two-piece bolted split body allows maintenance crews to service internal seals and polish the ball without replacing the entire valve assembly.
Every manufactured valve unit undergoes pressure testing according to API 598 standards before leaving our factory:
Applied at 1.5 times the nominal working pressure rating to verify body wall integrity, casting density, and joint strength.
Conducted using both hydrostatic water and pneumatic air pressure at 1.1 times the rated pressure to confirm zero-leakage performance across both flow directions.
Operating torque is measured across full 90° travel cycles to ensure smooth action and rule out internal binding.
Due to its high pressure containment and reliable seat closure, the WCB Flanged Floating Ball Valve for Industrial Use is deployed across critical process industries:
Handles crude oil transport lines, natural gas metering stations, and fuel terminal distribution manifolds operating under high pressure differentials.
Provides quarter-turn isolation for non-corrosive hydrocarbons, solvents, process gases, and utility air lines. For corrosive chemical lines, stainless steel CF8/CF8M body options are available.
Manages high-temperature steam distribution, condensate lines, and boiler feedwater loops. Upgraded PEEK or PPL seats prevent thermal deformation under rapid temperature cycles.
Delivers reliable service in municipal water supply networks, industrial cooling water circuits, and water treatment filtration plants requiring high-cycle durability.
Zhejiang Zhongguan Valve Manufacture Co., Ltd. operates two specialized production sites in Tianjin (water supply chain/cast iron) and Wenzhou (industrial supply chain/cast steel).
Multi-axis CNC lathes machine valve spheres and seating surfaces to exact micro-inch tolerances, extending seat service life.
Available with extended stems for underground buried service, lockout handle devices, and flanged connections tailored to ANSI, DIN, or GB standards.
We fulfill single-unit replacement requests for maintenance calls as well as multi-container project shipments.
Detailed engineering quotes and CAD dimensional drawings are issued within 24 hours for standard configurations.
Backed by ISO certifications and a 1-year product warranty providing free unit replacement for verified manufacturing defects. Review our certificates for more detail.
We supply Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ). RF is standard for pressures up to Class 300. FF is used when connecting to cast iron equipment to avoid body stress. RTJ is engineered for high-pressure Class 600 systems using metallic joint grooves.
After testing, all inner chambers and flange faces receive rust-inhibitor oil and protective plastic end covers. Shipments to tropical or marine environments are wrapped in vapor-corrosion-inhibitor (VCI) film and packed into sealed, heat-treated wooden cases.
Yes. Standard WCB steel operates down to -29°C. For sub-zero conditions, we substitute the body material with Low-Temperature Carbon Steel (LCB/LCC) and add extended bonnets to protect stem packing from freezing.
Our Tianjin base produces cast iron water valves, while our Wenzhou base manufactures cast steel and stainless industrial valves. Orders for this WCB ball valve are routed directly to Wenzhou for specialized production and testing.
Address
No. 838, Oubei Avenue, Yongjia County, Wenzhou City, Zhejiang Province, China
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