Yongda
Yongda
Discover our top-tier catalog of precision-engineered brass fittings, piping adaptors, compression elbows, and automatic vents built to handle demanding HVAC and fluid management applications.
Industrial fluid dynamics and thermal management networks demand robust infrastructure. At the core of these pipelines lie flow control solutions, particularly Cast Iron (CI) and Brass ball valves. While municipal, petrochemical, and heavy wastewater operations rely heavily on flanged cast iron ball valves for large nominal diameters, residential heating, industrial refrigeration, and clean water supplies are governed by precision-forged brass alloy mechanisms.
Internationally, standardizing pipeline safety requires compliance with ANSI, DIN, and ISO protocols. High-performance flow components are vital to prevent system drops, energy overheads, and hazardous chemical leakages. Deciding between a Cast Iron valve body and a Brass construction hinges on factors such as working pressure (PN class), temperature thresholds, media composition (corrosive water, gases, heating mixtures), and chemical compatibility. Modern pipeline designs focus heavily on high flow coefficients (Cv) to minimize friction and turbulence.
Cast Iron (CI) Ball Valves: Standard choice for commercial pipelines with nominal diameters ranging from DN50 to DN300. They handle high-torque open-close dynamics but are limited to specific temperatures and non-acidic media. Excellent for municipal water grids, district hydronic networks, and basic cooling lines.
Brass Ball Valves: Exceptional tensile strength, ductility, and resistance to dezincification (using advanced alloys like CW617N and DZR). Brass is the material of choice for high-precision components (mini ball valves, manifolds, mixing shunts) in sub-assemblies where thermal expansion, water sanitation, and lead-free compliance are primary operational metrics.
Yuhuan Yongda Fluid Control Co., Ltd. (originally known as Yuhuan Yongda Plumbing Co., Ltd.) was founded in 1996. Headquartered in Yuhuan, Zhejiang—widely celebrated as the undisputed "China Valve Capital"—our enterprise has evolved into a powerhouse for industrial design, engineering development, automated production, and global commercial trade of high-tier plumbing valves.
Our core products are classified into three major categories: brass valves, specialized plumbing fittings, and advanced HVAC system components. Centering our production line around mid-to-high-grade environmental protection standards, we have captured key market shares in North America, Western Europe, and various developing economies.
Under our proprietary, modern brand Cokaren, we are driving forward a new vision summarized by the promise: "Keep flowing, keep warming." This commitment manifests in our development of home water accessories and smart HVAC valves that maximize energy conservation while maintaining consistent indoor thermal comfort.
Cokaren represents our next-generation premium product line. With refined visual designs, highly polished ergonomics, and premium materials, Cokaren acts as our primary pipeline for smart HVAC integration. As a dynamic manufacturing enterprise, Cokaren is structured to target international markets, focusing on eco-friendly, low-lead brass and robust thermal actuators.
Our operational strategy centers around integration—supplying both the physical manifolds/valves and the electronic components (like thermostats and thermal actuators) needed to run modern multi-zone underfloor heating systems.
China's industrial valve manufacturers stand at the forefront of global OEM supply chains. Yuhuan's industrial cluster yields unique advantages that Western manufacturers cannot match. By centralizing raw material sourcing, casting hubs, extrusion foundries, CNC machining shops, and surface treatment facilities within a 30-mile radius, Yongda achieves optimal cost efficiency.
At our 45,000-square-meter facility (utilizing over 80,000 square meters of total usable space), we operate 600+ sets of advanced machinery, including 80+ specialized multi-spindle machining centers. Our integrated vertical manufacturing line covers hot forging, cold punching, precision threading, automation assembly, and 100% pneumatic/hydrostatic seal testing.
Our facility minimizes lead times by keeping safety stock of standard brass alloys (such as CW617N, H59, HPb59-1) and high-quality cast/ductile iron components. Furthermore, we leverage advanced PLC-driven testing protocols to verify that every component leaving the assembly line matches our strict defect-free standard.
Zero Leakage Policy: "Fine work, no leakage" is our manufacturing quality guide. Each valve undergoes dual pneumatic testing at 6 bars for air bubble detection, alongside automated hydrostatic tests to guarantee physical integrity up to PN16/PN25 ratings.
Specialized Machine Tools: By utilizing custom-designed CNC machine tools, we execute multi-angle boring, tapping, and finishing in a single manufacturing loop, eliminating placement errors and maintaining tight structural tolerances within 0.02mm.
Effective climate control and floor heating setups rely on interconnected valves, manifolds, and dynamic actuators. Our design path optimizes fluid distribution from the main heat source to individual zones, maintaining consistent flow control throughout the network.
Filters 98% of particulate impurities, protecting downstream valves.
Controls hot/cold water cycles with a spherical spool configuration.
Vents air pockets from heating systems to prevent air locks.
Blends cold and hot return water, stabilizing pipeline temperatures.
Consolidates device inputs to regulate room temperature zones.
Filters debris and manages main manifold loop shut-offs.
Distributes system water to individual sub-floor heating loops.
Our organization is built around a shared commitment to progress: Struggle, Enterprising, Pragmatic, and Innovative. Guided by the core principle of "Customer first, Quality based," we focus on continuous improvement at every level.
By designing durable flow components, we help prevent pipeline fatigue and reduce fluid loss. At Yongda, we combine corporate growth with worker welfare to build a stable, motivated production team.
The operating environment of a ball valve dictates its material requirements. Flow control components are utilized in three major global application fields:
Underfloor heating requires continuous water temperature control. Component assemblies—comprising balancing valves, manifolds, mixing shunts, and thermal actuators—must withstand mineral scaling and continuous pressure drops without failing.
Cast iron (CI) ball and gate valves are critical for municipal water mains. Our focus remains on internal corrosion protection, utilizing electrostatic powder epoxy coatings to isolate the metal surface from the water supply.
For domestic tap water systems, we manufacture valves using high-grade, lead-free and dezincification-resistant (DZR) brass alloys, ensuring the water supply remains free from heavy metal contamination.
Global Trends: Modern fluid control is shifting toward smart, automated networks. Smart buildings rely on electronic actuators and modulating mixing valves to adjust water flow in real-time based on ambient temperature sensors. Furthermore, international environmental standards (such as RoHS and lead-free plumbing laws in North America) continue to drive the development of new, clean brass alloys and durable composite valves.
Explore our core engineering catalog, designed for residential radiator networks, subfloor underfloor heating, and industrial utility pipelines.
Dual-function unit integrating a ball valve shut-off with an inline Y-strainer mesh to capture scale and suspended pipeline particles.
Manual and motorized temperature controls designed to throttle radiant loop flows and stabilize target temperatures.
A central control loop balancing high-temperature supply boiler water with cold underfloor heating returns to protect pipe integrity.
High-grade brass manifold assembly featuring flowmeters, balance inserts, and return actuators for zoned zone heating.
Forged brass outdoor faucet with a hose-barb outlet, offering reliable freeze protection and high-cycle operation.
Heavy-duty brass gate valve with a wedge disc and non-rising stem, designed for high-capacity fluid flow control.
Precision-threaded connection adapters designed for water meter links and utilities.
Flexible hose barb connections built to US thread standards, offering secure seal performance.
Reliable flow control components require third-party certification. To support our global client base, our production lines operate under strict management systems:
Our raw materials are thoroughly tested for chemistry profile control. Every batch of brass is validated via spark emission spectrometry to confirm alloy elements (copper, zinc, lead, and iron limits) match specific ASTM, EN, or DIN requirements.
Providing clear technical answers to common procurement questions from engineers, buyers, and industrial contractors.
Explore our wider catalog of safety devices, anti-corrosion faucets, and specialized pressure regulators.
Forged piston pressure reduction design coupled with a three-way directional ball configuration for water systems.
Durable outer nickel plating protects this safety tap against frost, rain, and soil acidity.
Features a union coupling design to simplify inline garden and agricultural connection maintenance.
High-flow brass valve body configuration designed to reduce drag coefficient in water distribution lines.
Specifically engineered to protect cylinder pipelines against unexpected hydraulic pressure spikes.
Features a key-operated locking stem to prevent water theft in public and outdoor installations.
Features a heavy brass body and full-port straight passage to minimize flow resistance.
Combines a spring-loaded non-return mechanism with an integrated T-strainer mesh screen.
Complete your hydronic and heating loops with our advanced selection of actuators, balance valves, PEX fittings, and hydraulic manifolds.
