Yongda
Yongda
Explore our heavy-duty industrial valves, compression fittings, and thermal regulation components engineered for optimal flow dynamics.
A comprehensive analysis of industrial pipeline systems, modernization of municipal HVAC, and critical engineering demands.
Rapid global urbanization and the expansion of high-efficiency district heating and cooling (DHC) systems demand robust mechanical components. High-precision heavy-duty ball valves (often referred to in heavy industry as "Bull Valves" for their rugged durability and high-torque characteristics) act as critical throttling and shut-off points. In large-scale installations, they regulate flow rates of hot and chilled water, direct thermal energy, and maintain system pressurization across miles of subterranean piping networks.
Modern regulatory environments across Europe and North America have placed stringent limitations on heavy metal leaching in potable water. Brass valve manufacturers are pivoting to low-lead, lead-free, and dezincification-resistant (DZR) copper-zinc alloys, such as CW617N and CW602N. Meeting ASTM, EN, and NSF standards is no longer optional; it requires state-of-the-art forging lines, precise temperature controls during heat treatment, and spectroscopic testing to ensure chemical homogeneity.
Underfloor heating, radiant cooling, and commercial HVAC systems are transitioning from manual regulation to electronic, sensor-driven automation. Proportional electric thermal actuators, programmable touch-key thermostats, and smart mixing shunts work dynamically to regulate building zones. The synergy between high-precision mechanical valves and digital actuators prevents system hydraulic imbalances, reducing commercial building energy usage by up to 30% globally.
Founded in 1996 and located in Yuhuan, Zhejiang—known globally as the "China Valve Capital"—Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) has spent nearly three decades mastering the art of high-performance fluid control manufacturing. As a premier industrial valve manufacturer, we specialize in the end-to-end design, tooling, development, testing, and distribution of premium brass valves, HVAC plumbing configurations, and specialized piping manifolds.
Our product portfolio is engineered specifically for mid-to-high-grade international markets, emphasizing metallurgical purity, environmental responsibility, and structural durability. Through our dedicated engineering processes, we deliver solutions that meet the rigid environmental and technical parameters demanded by contractors and mechanical engineers in North America, Europe, and Asia.
Cokaren, our newly established premium brand, embodies Yongda’s technical expertise. It focuses on refinement, precision engineering, and premium aesthetics for residential and high-end commercial HVAC applications. Built on the core principle of "keep flowing, keep warming," Cokaren products ensure thermal comfort, hydraulic stability, and absolute leak protection within hydronic and gas piping environments.
Our engineering vision for Cokaren is to bridge the gap between heavy industrial performance and elegant, maintenance-free consumer applications, establishing Yuhuan Yongda as a dynamic, world-class fluid technology brand.
From central heat source interfaces to room-level smart hydronic zoning, our hardware maintains pressure and stabilizes temperature.
The first line of defense in domestic water sanitation. Engineered to filter out up to 98% of particulates, scale, and metal oxides, protecting sensitive downstream thermostatic valves.
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Features a high-precision spherical brass spool for regulating supply and return fluid lines directly under boiler connections, assuring tight closures and zero fluid bypass.
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An automatic heavy-duty air release valve configured to discharge trapped micro-bubbles in closed-loop systems, preventing cavitation and maintaining pump health.
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Designed to blend primary high-temperature supply fluid with cooler return fluid to maintain stable, moderate fluid temperature, safeguarding underfloor PEX pipes.
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A central digital controller that monitors indoor temperatures and communicates with electric thermal actuators to balance thermal comfort and efficiency.
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A multi-functional valve assembly incorporating inline filtration, pressure bypass, temperature monitoring, and high-pressure blow-off functionalities in a single forged brass block.
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Precision-extruded brass flow distributor designed for multi-zone hydronic floor heating systems, supporting dynamic flow meters and balancing valves for each zone.
Learn MoreDelivering high-reliability flow control components through advanced metallurgy and strict testing protocols.
We source only graded European Standard CW617N brass and low-lead copper alloys, implementing strict incoming material inspection protocol (ICP-OES). By maintaining the copper content strictly at 57%-59% and stabilizing trace elements, we avoid crack propagation during high-temperature forging processes. This guarantees our valves possess structural integrity and resist environmental degradation under continuous high-temperature pressure.
In accordance with ISO 9001:2015, we operate under a zero-leakage production policy. Finished valves undergo automatic double-pressure hydro-pneumatic tests. High-pressure air testing at 6-8 bar and low-pressure bubble checks are performed on every production run, ensuring seal integrity. Additionally, sample batches undergo cycle testing to verify performance up to 100,000 operations under load.
Yuhuan Yongda’s operations are certified to international standards. We hold active registrations for:
By coupling these management standards with strict internal lab procedures, we provide reliable technical documentation and testing support. This documentation helps mechanical engineers, distributors, and municipal buyers verify the structural capacity and safety profiles of our products.
Our company operations are guided by the values of: Struggle, Enterprising, Pragmatic, and Innovative. Our foundational service tenet places "Customer first, Quality based" at the center of every project.
Through our strict "Fine work, no leakage" quality policy, we ensure each component functions reliably. We align our corporate growth with our employees' development, cultivating a dedicated and professional production team.
Get answers to common design, engineering, and material questions when procuring valves and manifold systems.
CW617N is a standard brass formulation (CuZn40Pb2) that balances hot forging ductility and machining properties. It prevents micro-fissures in high-temperature, high-pressure heating systems, keeping connections stable over decades of operation.
Electric thermal actuators mount to the manifold's return-side control valves using standard thread sizes, typically M30x1.5. When signaled by a thermostat, the actuator's paraffin wax element expands or contracts, raising or lowering the valve pin to adjust zone flow rates.
In corrosive or soft-water areas, standard brass can lose zinc, weakening its alloy structure. To prevent this, we offer dezincification-resistant (DZR) brass alloys like CW602N. We use precise thermal annealing to stabilize the alloy, protecting it against long-term corrosion.
Our residential and commercial HVAC ball valves are rated for PN16 to PN25 pressures. For higher-stress applications, our heavy-duty forged components support working pressures up to PN40 (approximately 580 PSI) across their rated temperature range.
Yes. Our brass compression fittings, including those manufactured to ASTM F1807 standards, work reliably with standard PEX-a, PEX-b, and oxygen-barrier piping. They create a leak-free mechanical seal that retains its strength during temperature cycles.
Air bubbles in a hydronic system can cause pump cavitation, reduce heat transfer, and cause pipe corrosion. Our venting valves use an internal float system. When air builds up, the float drops, opening a vent to release the air and resealing once the water rises.
Explore our complete catalog of industrial-grade brass valves, gate valves, and thermal controller systems.
