Yongda
Yongda
Explore our precision-engineered selection of professional HVAC distribution blocks, temperature valves, and premium brass accessories.
In the modern industrial landscape, high-precision brass ball valves play a crucial role in flow regulation and piping systems. As global infrastructure advances, the demand for high-reliability valves—often manufactured under ODM agreements to match strict dimensional standards—has grown exponentially. These assemblies are vital for control and isolation in water heating, commercial boiler setups, and hydronic manifold installations.
The growth in high-efficiency HVAC networks and automated boiler setups requires components that can withstand demanding temperature cycles, high pressure, and corrosion. Utilizing premium brass formulations (such as low-lead and dezincification-resistant DZR brass) helps modern piping infrastructure remain compliant with stringent global environmental standards, including those in North America and Western Europe.
"With environmental regulations tightening, the switch to certified low-lead brass alloys and high-durability PTFE seating in ball valves is no longer optional—it is a critical requirement for global supply chains."
Providing dependable isolation and fine flow control in urban district boiler plants, underfloor zoning manifolds, and complex water loops.
Engineered with standardized mounting pads and stem profiles for seamless operation with electric actuators and smart controls.
Manufactured using strict lead-free brass formulations to comply with drinking water sanitation guidelines and keep communities safe.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was founded in 1996. Located in Yuhuan, Zhejiang—known as the "China Valve Capital"—we are a dedicated plumbing valve enterprise integrating custom product design, manufacturing, and distribution.
We specialize in mid-to-high-grade brass valves, fittings, and HVAC solutions, with a strong focus on ecological sustainability. Our premium solutions are widely trusted across North America, Europe, and neighboring international markets.
Our modern facility spans over 45,000 square meters of factory space (with over 80,000 square meters of actual usable floor area) and houses more than 600 sets of production and testing machinery. Supported by dedicated custom machine tool lines, we deliver precise manufacturing to meet specialized demands across more than 20 countries.
Cokaren, our premium brand, is dedicated to high-precision engineering and manufacturing. Under our brand promise "keep flowing, keep warming", we provide durable and efficient home water systems accessories and heating accessories designed for long-term performance.
By continuously investing in team development and process innovation, we seek to align sustainable business growth with the well-being of our workers and the success of our global partners.
For high-pressure HVAC applications, selecting the right alloy is essential. Standard brass components can suffer from dezincification in slightly acidic or soft water, leading to structural failure. To prevent this, our production lines utilize specialized, certified DZR (Dezincification Resistant) and Lead-Free brass alloys, complying with European and American plumbing regulations.
Every production run is verified using optical emission spectrometers to guarantee proper alloy composition before forging. After forging, components undergo automated tempering to relieve internal stresses, preventing stress corrosion cracking in high-temperature environments.
Our manufacturing operations maintain strict adherence to international quality and environmental management standards:
Our integrated product portfolio delivers precision control for underfloor heating and residential water loops.
Provides filtration for domestic water setups, capturing up to 98% of system particulates.
Equipped with a spherical spool for control over boiler inlet and outlet flows.
Discharges accumulated air from heat pump systems to prevent cavitation.
Mixes return and supply streams to stabilize system temperatures.
Integrates heating components for automated room temperature control.
Integrated unit for particulate isolation, manifold bypass, and monitoring.
Distributes hot water lines to individual heating zones for home heating.
Designed for safe heat routing and minimal pressure drop across heating zones.
As an OEM/ODM supplier based in Yuhuan, China, we leverage a highly integrated industrial cluster. Access to regional raw material suppliers, specialized surface finishing shops, and nearby logistics hubs allows us to maintain consistent material quality and lower production lead times.
Our factory uses advanced multi-station forging presses and high-speed CNC machining centers. This level of automation keeps dimensional tolerances within micrometer limits, ensuring interchangeable parts and reliable sealing in the field.
| Valve Model Type | Body Material Grade | Pressure Rating | Working Fluid Medium | Thread Standard Options |
|---|---|---|---|---|
| Precision Ball Valves | HPb59-1, CW617N, DZR Brass | PN16 / PN25 / 600 WOG | Water, Oil, Non-Corrosive Gas | NPT, BSP, BSPT |
| Thermostatic Radiator Valves | CW614N, Low Lead Brass | PN10 | Heating Water, Glycol Solutions | G Thread, Compression Joint |
| Distribution Manifolds | CW617N / Forged Brass H59 | PN10 / PN16 | Hydronic Underfloor Systems | Eurocone Connections |
| Check & Stop Valves | Standard Forged Brass | PN16 | Water Systems, Boiler Feeds | Female/Male Threaded BSP |
Common technical inquiries from fluid engineers, HVAC distributors, and procurement managers.
Custom ODM ball valves are engineered to meet specific dimensional and mechanical requirements. By customizing the stem profile, bore diameter, and seal materials, we can optimize flow performance (Kv value) and match regional installation standards like NPT or BSP threads.
DZR (Dezincification Resistant) brass contains alloying elements that prevent zinc leaching when exposed to aggressive water. This preserves the structural integrity of the valve body and helps prevent pinhole leaks and thread failures over time.
Every single valve assembly undergoes pneumatic pressure testing (using air underwater) to verify structural and seat sealing integrity. This test detects microscopic leaks that might bypass standard hydrostatic checks.
Standard custom forging projects require 15 to 20 days for tooling and sample production, followed by 30 to 45 days for bulk manufacturing, depending on the order size and material specifications.
Yes, our CW617N brass manifolds and EPDM seals are compatible with ethylene and propylene glycol mixtures (up to 50% concentration) commonly used in freeze-protected hydronic systems.
Explore our technical components, including automatic vents, motorized valves, and specialized thread adapters.
