Yongda
Yongda
Premium brass valves and actuate components engineered for immediate integration in heating, cooling, and water distribution networks across Vietnam.
Vietnam is experiencing a historical industrial boom, transforming itself into one of Southeast Asia's most prominent manufacturing and commercial hubs. Key industrial zones located across Hanoi, Bac Ninh, Haiphong, Binh Duong, and Ho Chi Minh City require robust mechanical systems to support their massive infrastructure projects. Within high-tech production plants, electronics factories, and commercial high-rises, optimal fluid loop operations are critical. Atmospheric air pockets trapped within commercial HVAC, chilled water lines, and solar thermal loops drastically reduce thermal efficiency, accelerate structural pipe corrosion, and risk severe water hammer events.
Understanding these critical operational vectors, Yuhuan Yongda Fluid Control Co., Ltd. provides localized engineering and high-durability brass venting valve configurations specifically built to withstand Vietnam's distinctive hot, high-humidity, and coastal saline atmospheres. Our customized valve arrays enable manufacturing plants and commercial properties to minimize down-time, ensure continuous exhaust air relief, and optimize the overall Energy Output Ratio (EOR) across all heating and cooling structures.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was established in 1996 in Yuhuan, Zhejiang, the globally recognized "Valve Capital of China". Over nearly three decades, the company has established itself as an elite manufacturer specialized in the design, engineering, validation, and distribution of high-grade brass valves, fittings, and HVAC system components. With a massive physical manufacturing footprint of 45,000 square meters and an active usable floor area of 80,000 square meters, we export premium fluid solutions to more than 20 countries globally.
Under our dedicated engineering brand Cokaren, we carry out our core corporate promise: "Keep flowing, keep warming". We design and deliver water distribution systems that are safer, more robust, and highly efficient. The Cokaren design principles integrate premium visual finishings with top-tier technical tolerances, providing customers globally and locally in Vietnam with elite quality and worry-free installations.
Integrating flow balancing, filtration, thermal regulation, and automatic venting to guarantee operational stability across commercial and residential plumbing arrays.
Comprehensive fluid circuit map detailing standard manifold placement, filtration points, mixing shunts, automatic air vents, and localized zone regulators.
International plumbing networks and commercial thermal loops are evolving towards stricter material standards. Environmental protocols, notably RoHS and low-lead brass requirements (such as NSF/ANSI 372 in the US and equivalent CE directives in Europe), are standard benchmarks. Modern venting and control systems are required to operate reliably under variable temperatures without leaching hazardous heavy metals into closed or potable water supplies.
Yongda answers this trend by implementing ISO9001-2015 Quality Management Systems, ISO14001-2015 Environmental Management Systems, and ISO45001-2018 Occupational Health and Safety certifications across our entire workflow. We source refined CW617N or HPb59-1 low-lead brass elements for the valve bodies. The brass is forged under high pressure to prevent microscopic pinholes, and precision CNC-machined to ensure tight structural seal tolerances. Every single automatic venting valve undergoes a pressurized shell leakage test to meet our policy: "Fine work, no leakage."
Under Henry's Law, the solubility of gases in liquids is directly proportional to pressure and inversely proportional to temperature. When high-temperature cooling loops or central boilers operate, dissolved air separates and forms micro-bubbles. Without automatic venting valves, these micro-bubbles accumulate, creating restrictive air pockets that limit fluid flow.
Our venting valves utilize a highly buoyant, heat-stable internal float connected to an exhaust lever. As air enters the chamber, the liquid level drops, dragging the float downward to open the air exhaust channel. Once air is purged and fluid rises, the float rises to seal the exhaust port, preventing liquid leaks.
Trapped air contains oxygen, which drives oxidization when in contact with ferrous or copper components under high temperature. Eliminating air via high-precision brass vents minimizes localized corrosion, prevents bio-film formation, and extends the operational life of boilers, heat exchangers, and cooling lines.
Explore our broader selection of high-durability plumbing connectors, temperature regulators, and manifold system components.
Our adherence to global testing parameters protects investments and secures regulatory clearances in Vietnam's construction sector.
Building installations and industrial projects in Vietnam increasingly align with green building certifications, such as LOTUS (Vietnam Green Building Council) and LEED. Achieving these benchmarks requires equipment that maintains hydraulic efficiency while utilizing low-impact, durable materials.
Yongda's quality systems are certified under ISO9001-2015, ISO14001-2015, and ISO45001-2018. This structural framework guarantees consistent dimensional tolerances and material tracking from raw brass billet ingestion to final hydraulic valve testing. We optimize manufacturing to reduce energy use and eliminate waste, supporting low-carbon compliance across domestic supply chains in Vietnam.
Our quality standard, "Fine work, no leakage," defines our testing protocols. Every automatic air release valve and manifold component undergoes structural integrity tests under static pressures up to 10-16 bar. This standard ensures long-term operational safety in high-rise buildings and demanding mechanical systems.
Optimized components for hydronic circuits, underfloor systems, and residential plumbing setups.
Premium valves, strainers, and bellows engineered for safety and pressure relief in high-flow installations.
Addressing key integration, material specifications, and system maintenance questions from engineering professionals in Vietnam.
In tropical climates, cooling loops and solar thermal systems experience ambient temperature fluctuations. Water holds dissolved air; when temperature increases or pressure drops, these gases release to form air pockets. Trapped air blocks fluid flow, decreases heat transfer efficiency, and leads to internal oxygen corrosion. Automatic venting valves continuously vent this air, stabilizing system pressure without requiring manual maintenance.
High humidity and salinity in regions like Da Nang, Haiphong, and Vung Tau accelerate brass dezincification, which weakens the alloy by leaching zinc. Yuhuan Yongda uses premium dezincification-resistant (DZR) brass alloys and specialized thermal annealing. This process stabilizes the metallurgy, preventing dezincification and cracking in harsh coastal conditions.
Our venting valves, manifolds, and balancing components conform to ISO9001:2015 quality standards and CE directives. Our brass fittings meet RoHS environmental standards. These certifications ensure our components comply with local construction codes and support LEED or LOTUS green building ratings in Vietnam.
Yes. Our advanced electric actuators (such as those for underfloor heating and central manifolds) use standard 24V or 220V control signals. This design makes them compatible with digital thermostats and building automation systems (BAS), allowing engineering teams to monitor flow rates and manage energy usage remotely.
We offer comprehensive OEM/ODM services, including custom thread sizing (NPT, BSP, ISO metric), custom brand etching, and tailored pressure ratings. Our technical team works directly with engineering buyers in Vietnam, providing fluid simulations and volume manufacturing capabilities to match project specifications.
Contact our engineering desk for custom quotes, technical drawings, and bulk supply pricing tailored to your region.
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