Yongda
Yongda
Precision-engineered component lineup for modern plumbing and zone management systems.
Founded in 1996 and strategically nestled within the premier industrial hub of Yuhuan, Zhejiang—widely celebrated as the "China Valve Capital"—Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) has evolved over nearly three decades into an industry-leading B2B enterprise. We specialize in the conceptualization, system design, metallurgical development, advanced manufacturing, and global commercialization of premium-grade brass valves, fittings, and HVAC system solutions.
Our strategic focus rests on the middle and high-grade segments. Every valve engineered in our factory prioritizes environmental protection, lead-free integrity, and extreme operational reliability. It is this unwavering commitment to safety and material compliance that has made our product suite highly sought-after by system integrators, municipal engineering groups, and HVAC contractors across North America, Europe, and neighboring global markets.
With the launch of our premium brand, Cokaren, we are redoubling our commitment to refining aesthetics, optimizing flow kinetics, and delivering reliable automated valves. Embedded with our brand promise—"Keep flowing, keep warming"—Cokaren valves are meticulously designed to power comfortable, sustainable, and highly efficient hydronic systems in homes and commercial properties alike, pushing the boundaries to emerge as a dynamic, world-class flow control brand.
Integrated fluid control and water safety systems for modern hydronic distribution networks. We bridge the gap between heavy plumbing design and smart building automation.
In commercial building automation and smart HVAC platforms, flow management has transitioned from crude, static throttling to intelligent, closed-loop zoning. Traditional solenoids, while fast, are highly susceptible to "water hammer" (hydraulic shock caused by instantaneous flow cessation), which can stress pipes and weld joints. Motorized ball valves address this issue by using an internal gear motor to rotate a spherical ball by 90 degrees over a span of 3 to 15 seconds. This gradual transition prevents shock waves, ensuring smooth system operations.
Furthermore, motorized ball valves maintain a direct, unobstructed flow path when fully open, offering an exceptionally low pressure drop (high Cv rating). This reduces the pump head requirements of the hydronic system, translating directly to lower electrical consumption for the end-user.
Reliability starts with metallurgy. At Yuhuan Yongda, we use forged brass alloys designed for dezincification resistance (DZR). This prevents the structural degradation commonly associated with high-temperature, mineral-rich water streams.
| Parameter | Standard Specification | Yongda/Cokaren Premium Grade |
|---|---|---|
| Body Material | Standard CW617N / HPb59-1 Brass | DZR Lead-Free CW602N / Low-Lead CW617N |
| Nominal Pressure | PN16 (1.6 MPa) | PN25 - PN40 (2.5 - 4.0 MPa) |
| Actuator Enclosure Rating | IP54 | IP65 / IP67 Water and Dust Protection |
| Working Temperature Range | 0°C to 90°C | -20°C to 120°C (Glycol-compatible) |
| Actuation Control Signals | 2-Wire (On/Off) | 3-Wire, Modbus RTU, 0-10V Proportional Modulating |
The requirements for motorized ball valves vary significantly across different regions:
Zhejiang's Yuhuan district accounts for a major portion of global brass valve production. This geographic clustering creates an unmatched supply network. At Yuhuan Yongda, we utilize this ecosystem to source high-grade brass billets, custom tooling, and high-tolerance seals quickly.
Our facility features over 600 advanced manufacturing machines, including 80+ specialized CNC machining centers and automated assembly lines. By performing forging, precision machining, actuator assembly, and pressure testing in-house, we eliminate external logistical delays and enforce strict quality control. Our quality policy, "Fine work, no leakage," ensures that every valve undergoes automated hydro-pneumatic testing before shipping.
As smart building protocols continue to evolve, the motorized ball valve is transforming from a simple mechanical device into an intelligent IoT node:
Our business model is built on structured operational policies and high performance standards. We maintain a system where company growth aligns with the personal development and welfare of our employees.
Core Culture: Struggle, Enterprising, Pragmatic, Innovative
Core Tenet: Customer first, Quality based
Quality Policy: Fine work, no leakage
By upholding these principles, we build trust with our OEM clients, ensuring that every batch of valves delivered meets their exact design requirements.
Operating as an OEM/ODM supplier on a global scale requires strict compliance with international manufacturing, environmental, and occupational safety frameworks.
Yuhuan Yongda Fluid Control Co., Ltd. has successfully implemented and continually maintains the following standard certifications:
