Yongda
Yongda
Explore our industrial-grade components, meticulously designed for maximum reliability, thermal performance, and fluid control stability.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was established in 1996 in the renowned "China Valve Capital" – Yuhuan, Zhejiang. We have evolved into a highly integrated and professional plumbing valve enterprise specializing in design, development, high-precision manufacturing, and global sales.
Our expansive product portfolio centers on three essential fields: premium brass valves, engineered brass fittings, and advanced HVAC system components. With mid-to-high-grade market positioning, our manufacturing philosophy heavily prioritizes environmental sustainability, leading-edge durability, and superior material integrity.
Operating a modernized manufacturing site spanning over 45,000 square meters (with an actual usable area exceeding 80,000 square meters), we leverage a fleet of over 600 sets of advanced production and testing apparatus, including 80+ specialized CNC machining units, to supply critical markets in North America, Europe, and over 20 countries worldwide.
As the premium strategic brand of Yuhuan Yongda, Cokaren represents a dedication to refined engineering, impeccable industrial design, and highly reliable water distribution solutions. Guided by the brand promise of "Keep flowing, keep warming", Cokaren systems bring warmth, energy efficiency, and safety into modern homes.
By blending advanced metallurgical research with automation, Cokaren is structured as a dynamic enterprise geared for aggressive global growth. The brand aspires to redefine safety indexes in underfloor heating and residential drinking water systems, ensuring sustainable growth while achieving international leadership in smart HVAC components.
Our operations adhere strictly to international management standards, guaranteeing safety, sustainability, and absolute performance.
Yuhuan Yongda maintains rigorous quality control operations, backed by official certifications that validate our systemic reliability:
Under our core policy of "Fine work, no leakage", every threaded ball valve undergoes double-sided pneumatical testing and high-pressure hydraulic tests, mitigating risk in critical environments.
An in-depth look at our technical specifications, processing precision, and component structural integrity.
Utilizing certified alloys such as HPb59-1, CW617N, and CW602N (DZR). Low-lead and lead-free configurations prevent corrosion and heavy metal contamination, complying with strict global drinking water regulations.
Our high-precision CNC spherical grinding ensures sphere deviation is kept within ≤0.005mm. This micro-precision reduces rotational friction torque, extends PTFE seat life, and prevents high-pressure bypass leakage.
Precision-cut threads complying with ISO 228 (BSP) and ANSI B1.20.1 (NPT). Clean thread entries prevent cross-threading during site installation, ensuring leak-free connections to PEX-AL-PEX pipes and iron plumbing.
Designed for professional mechanical and electrical engineers, our products follow standardized performance parameters:
| Parameter Type | Standard Specification | Application Environment |
|---|---|---|
| Available Sizes | 1/4" to 2" (DN8 to DN50) | HVAC Manifolds, Boiler Inputs, Residential Mains |
| Nominal Pressure Rating | PN16 / PN25 / PN40 | High-rise domestic water systems, commercial heating grids |
| Material Integrity | CW617N, CW602N, HPb59-1 Brass | Corrosive fluid control, hard water networks |
| Leakage Testing Threshold | 100% air-tested under 6-8 bar | Zero tolerance HVAC distributions, gas supply |
| Seat Material | PTFE (Polytetrafluoroethylene) | Wide thermal threshold (-20°C to 120°C) |
Unlocking direct supply chain value, specialized technology networks, and operational cost structures in the global valve capital.
Yuhuan, Zhejiang hosts China's most advanced brass valve industrial cluster. This localized network integrates casting, precision machining, surface treatment, and logistics to lower overhead and expedite production cycles.
Our 45,000+ sqm factory relies on automated forge presses, rotary transfer machines, and CNC multi-axis centers to minimize human labor errors, maximize yield, and maintain competitive pricing.
From private-label laser etching to complex, custom valve designs, we provide tailored engineering support. Our engineers co-develop solutions that integrate directly into regional heating systems.
Evaluating standard updates, technical innovations, and the regulatory challenges of modern fluid control.
Conventional static water systems are transitioning to dynamic, intelligent networks. By integrating motorized mixing shunts, electronic balancing valves, and high-efficiency thermal actuators, smart distribution panels optimize water volume and temperature dynamically. These systems reduce home energy consumption by up to 30%, making them central to green building certifications globally.
With regulations like NSF/ANSI 61 and Europe's dynamic REACH/RoHS guidelines tightening, manufacturers must limit lead content in potable water channels to <0.25%. Yuhuan Yongda addresses this trend by sourcing high-purity, lead-free bismuth/silicon-brass alloys, providing safe fluid paths for residential water filters and mixing systems.
Trapped air in water loops causes cavitation, oxidation, and heat transfer drop-offs. Modern commercial and residential boiler installations rely on automatic venting valves and air separators. By continually purging air from the source water line, they prevent system damage and keep energy output steady.
How our valve components perform across diverse, heavy-duty industrial and residential systems.
In hydronic radiant systems, our brass manifolds partition heat across loops, regulated by thermal actuators and smart thermostats. By managing water flow through precise ball valves, the system prevents hot spots and optimizes energy use.
Using robust materials like CW617N brass, our compression fittings, check valves, and water filters withstand fluctuating city pressure, preventing lime build-up and preserving drinking water quality.
Boiler angel valves and safety relief systems handle high temperatures and protect against pressure spikes, providing reliable isolations for safe residential heat generation.
Schematic diagram of an integrated underfloor energy distribution and mixing system.
Professional engineering and procurement answers to clarify material grades, test methods, and order processing.
High-precision manifolds, automatic vent valves, and plumbing fittings engineered for long-term service.
