Yongda
Yongda
Premium raw materials, high precision engineering, certified for global pipelines.
Providing high-precision brass components to global critical pipelines since 1996.
Established in 1996, Yuhuan Yongda Fluid Control Co., Ltd. (historically known as Yuhuan Yongda Plumbing Co., Ltd.) has positioned itself at the epicenter of fluid control engineering. Headquartered in Yuhuan, Zhejiang—widely celebrated as the "China Valve Capital"—we offer structural integrity, materials innovation, and engineering precision for multi-piece ball valves (piece ball), sanitary systems, and custom manifolds.
In our continuous pursuit of excellence, we launched the Cokaren brand. Rooted in the brand promise "keep flowing, keep warming", Cokaren concentrates on delivering highly refined HVAC systems, water filtration, and complex distribution assemblies. By integrating CNC precision with custom forging configurations, Cokaren represents the peak of our technological development, facilitating smart energy distribution and architectural comfort.
Operating out of an expansive infrastructure with over 80,000 square meters of actual usable factory area, we manage production through 80+ specialized CNC machining hubs. Our core values—Struggle, Enterprising, Pragmatic, and Innovative—underpin a quality policy centered on "fine work, no leakage", ensuring that every single industrial piece ball valve leaves our floor after robust pressure and thermal test runs.
How the demands of efficiency, environmental compliance, and materials science drive valve design.
In modern hydronic and mechanical engineering, the term "piece ball valve" (specifically 1-piece, 2-piece, and 3-piece ball valve systems) represents the primary hardware used for isolation in municipal water systems, chemical lines, and residential heating grids. Over the last decade, the global manufacturing paradigm has experienced a profound shift due to raw material variations, environmental mandates, and automation requirements.
Global environmental acts demand a transition to lead-free brass formulations (e.g., C27453, CW724R). Manufacturers must adapt hot-forging profiles to handle lead-free copper-zinc-silicon alloys without causing cracks or internal stress points.
To resist corrosive mineral degradation in acidic or chloride-heavy municipal water, DZR brass alloys (such as CW602N) are crucial. This metallurgical composition prevents alloy deterioration, preserving long-term structural integrity.
Modern commercial specifications increasingly demand combined functions. Hybrid systems, like ball valves integrated with Y-strainers or temperature ports, reduce system joints, decreasing installation labor and potential leak paths.
A strategic guide for supply chain managers sourcing large-scale brass fittings.
For international sourcing directors and HVAC engineers, finding reliable suppliers is not simply about identifying the lowest unit cost. Instead, modern supply chain stability relies on a complex mix of regulatory certificates, design verification, and production scalability.
Engineered systems for optimized domestic and commercial water distribution.
In modern residential and commercial buildings, hydronic HVAC distribution and water filtration units must function as a cohesive system. Yuhuan Yongda manufactures individual valves alongside macro distribution assemblies, managing fluid dynamics from the point of entry to localized heat exchange zones.
Our integrated manifolds and distribution stations regulate high-efficiency hot and cold water transport, optimizing system thermal balance.
Serving as the first line of defense in domestic sanitation, this system filters up to 98% of macro impurities to protect downstream equipment.
Features a specialized spherical brass spool designed to regulate cold and hot fluid streams under elevated temperatures.
Safely discharges excess air from central air source heat pumps and boilers to prevent airlocks and thermal inefficiencies.
Blends return cold water with supply hot water to achieve precise output temperatures, preventing thermal shock in floor pipes.
Integrates with underfloor HVAC systems to adjust real-time zone heating outputs, lowering residential energy footprint.
A multi-functional valve group designed to filter pipeline sediment, monitor zone pressure, and control the primary bypass loop.
Our heavy-duty forged brass manifold body distributes heat output across individual room heating zones.
Combines reliable shutoff with a cleanable mesh insert, eliminating the space and cost required for a separate Y-strainer.
Our long-term commitment to zero-leakage fluid systems.
To meet global regulatory shifts, Yuhuan Yongda continues to invest in advanced manufacturing systems. Our technical roadmap highlights ongoing improvements in process automation, material purity, and verification systems.
We source raw copper cathodes and zinc to alloy in-house or through audited partner refineries, ensuring zero impurity contamination. Our induction-heated forging presses produce raw bodies with optimal grain structure to prevent high-pressure cracking.
For threads, bores, and seal pockets, we utilize Japanese-engineered CNC machining centers. Achieving tolerances within ±0.01 mm ensures that Teflon (PTFE) and O-ring seals seat correctly, preventing low-torque leakage.
Consistent with our quality policy of "fine work, no leakage", every single valve undergoes automated pneumatic testing followed by hydrostatic pressure burst verification, confirming compliance with ISO 9001-2015 standards.
As smart home and hydronic systems develop, we are designing smart mixing valves with electronic actuators, enabling remote temperature balancing through Cokaren thermostats.
Answering key questions on sourcing, materials compliance, and order management.
Heavy-duty plumbing and HVAC components engineered for reliable performance.
