Yongda
Yongda
Explore our top-tier brass fittings, bellows, and actuators designed for high-end HVAC and industrial liquid networks.
In the modern landscape of civil engineering, industrial thermal dynamics, and environmental management systems, pipe series and fluid control mechanisms serve as the essential vascular infrastructure. From high-rise residential properties in North America to smart district-heating networks across Northern Europe, the requirement for zero-leakage, corrosion-resistant, and dynamically responsive piping components has never been higher.
As cities globally transition toward decarbonized energy paradigms, hydronic systems—driven by advanced manifolds, thermoelectric actuators, and pressure-balanced mixing shunts—are replacing traditional convective air systems. This macro-shift demands strict material integrity, specifically high-grade, dezincification-resistant (DZR) brass and lead-free alloys. Manufacturers must adapt to regional compliance codes such as EN 12165 in Europe and NSF/ANSI 61/372 in the Americas to satisfy both mechanical durability and public safety requirements.
Yongda Fluid Control leverages three decades of metallurgy and manufacturing expertise to position itself at the center of this industry shift. Our integrated product systems, operating under the flagship brand Cokaren, are engineered to optimize municipal fluid delivery, boost HVAC energy efficiency, and protect structural water safety.
A look at the scale of our production facility and our international supply capacity.
Yuhuan in Zhejiang province is recognized globally as the "Valve Capital of China". This concentrated industrial region forms a mature ecosystem for brass metallurgy, precision tooling, and fast-response shipping logistics. Yongda Fluid Control (originally Yuhuan Yongda Plumbing Co., Ltd.) is situated directly in this industrial zone.
Occupying a physical footprint of over 45,000 square meters with an actual usable floor area of 80,000 square meters, our facility manages the entire production cycle in-house. From raw brass extrusion, hot forging, high-precision multi-axis CNC machining, to surface treatment and automated assembly, every step is closely monitored. This vertical integration allows us to respond quickly to custom configurations while maintaining strict quality control.
Our facility features over 600 sets of advanced manufacturing and testing devices, including 80+ specialized CNC machine tools. This technology enables us to consistently maintain close structural tolerances on complex fittings, internal threads, and valve seats. By reducing human error and boosting production speeds, we pass efficiency gains directly to our global OEM/ODM partners in North America, Europe, and Asia.
Our strict focus on materials science and precise manufacturing ensures reliability in demanding environments.
We source high-grade brass formulations, including CW617N, CW614N, and C37700. For drinking water applications, we produce lead-free (HPb59-1 / C46500) configurations to meet NSF/ANSI 372 safety guidelines, preventing heavy-metal leaching and protecting drinking water systems.
Our quality commitment is "Fine work, no leakage." Every valve undergoes 100% pneumatic sealing tests under 0.6–0.8 MPa pressures alongside hydraulic stress tests to eliminate casting flaws, pinholes, and assembly tolerances before leaving our factory floor.
We design manifolds, thermostat controls, and mixing shunts tailored to regional operating pressures, thread standards (BSP, NPT, G-thread), and connection styles (compression, press-fit, or barb) to simplify integration with local systems.
Our integrated ecosystem regulates heat transfer, stabilizes water pressures, and ensures long-term operational efficiency.
Hydronic heating and cooling systems require continuous dynamic balancing to handle varying building thermal loads. A standard HVAC network includes heat generation source controls, primary distribution manifolds, secondary bypass loops, and room-level zone adjustments.
Our HVAC line works together as a cohesive system. The Y1001 Brass Manifold splits flow across rooms, the Y5020 Mixing Shunt maintains temperature stability, and the Y9070 Venting Valve purges entrained air. Together, they prevent pipe erosion and cavitation, reduce compressor strain, and lower overall system energy consumption by up to 22%.
Acting as the primary filtration barrier, the Y9021 removes up to 98% of suspended solids, rust, and particulate matter, preventing downstream valve seat abrasion.
Equipped with a low-friction spherical brass spool, these valves regulate hot and cold inlet flows to maintain stable pressure at boiler entry points.
An automatic venting valve that releases trapped micro-bubbles from air-source heat pumps and boilers, preventing air locks and maintaining thermal transfer efficiency.
A temperature-stabilizing shunt that mixes hot boiler outlet water with cooler radiant return lines, preventing thermal shock in floor pipes.
Communicates with zone thermal actuators to monitor ambient room conditions and adjust flow rate delivery for localized comfort control.
An integrated shut-off and monitoring design featuring built-in temperature wells and pressure gauge ports for simplified system diagnosis.
Machined from heavy brass billets, the Y1001 splits fluid flow across heating zones, balancing volume and pressure for consistent temperatures in every room.
Reliability is fundamental to fluid control components. Our engineering processes are backed by international standard systems to ensure quality across various operating conditions:
Under our new brand identity, Cokaren, and our motto "Keep flowing, keep warming", we focus on delivering refined appearance and consistent, long-term reliability.
Our brass systems and components are engineered for diverse operating environments globally.
Widely deployed in cold climates like Northern Europe and North America. Manifold systems split hot water flow through underfloor PEX pipe loops, managed by thermoelectric actuators and thermostats to maintain uniform, comfortable room temperatures.
In high-density commercial systems, our high-flow ball valves, Y-strainers, and bypass loops protect central boilers and heat exchangers. They filter out debris and handle water pressure changes to keep systems operating smoothly.
Using low-lead or lead-free brass formulations, our compression fittings, stop valves, and faucets are designed for clean water supply in single-family and multi-family residential complexes, preventing contamination.
For procurement managers, project engineers, and global distributors looking to optimize their supply chain.
Sourcing plumbing components globally requires careful evaluation of technical standards, production capacity, and supply chain logistics. Here is our recommended approach for evaluating valve and fitting manufacturers:
At Yongda, we supply chemical test sheets, mechanical reports, and pressure logs for every batch, helping B2B clients streamline custom clearance and quality verification.
How smart integration and changing environmental standards are shaping the future of fluid systems.
The future of fluid control centers on connectivity and sustainability. Dynamic components are evolving from mechanical adjusters into intelligent nodes connected to Building Management Systems (BMS).
Smart thermostatic actuators and balancing valves now adjust in real-time based on environmental feedback, saving energy and providing precise temperature control.
On the materials side, international regulations continue to lower allowable lead levels in brass. Manufacturers are adopting silicon-brass and bismuth-brass alloys to maintain machinability while meeting strict eco-friendly standards.
Get detailed answers about materials, manufacturing capabilities, and custom development options.
Our core selection of anti-theft faucets, heavy-duty gate valves, manifolds, and HVAC distribution components.
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