Yongda
Yongda
Discover our globally exported range of precision brass gate valves, manifolds, pressure control groups, and advanced compression fittings.
Established in 1996, Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) is situated in Yuhuan, Zhejiang—the renowned "China Valve Capital." As a premier industrial valve manufacturer, we specialize in the comprehensive design, development, production, and worldwide distribution of top-tier plumbing, HVAC, and industrial fluid control components.
Our products span three primary categories: brass valves, fittings, and HVAC distribution systems. Characterized by strict raw material control, zero-lead composition, and high mechanical performance, our systems meet the demanding specifications of North American, European, and global energy distribution grids. With an actual usable manufacturing footprint reaching 80,000 square meters, our facility utilizes more than 80 specialized machining systems alongside advanced computerized testing arrays.
Cokaren, our premium brand, commits to refining aesthetic standards and quality thresholds to support smart fluid grids. Based on the philosophy of "keep flowing, keep warming," we empower residential and industrial hydronic architectures.
Analyzing materials, compliance demands, and engineering expectations in modern industrial fluid infrastructure.
In global procurement, the material integrity of industrial valves dictates the safety, durability, and reliability of the overall system. Heavy industrial systems, municipal distribution networks, and HVAC projects require materials that combat dezincification (DZR brass) and conform to strict lead-free standards (such as California Prop 65 and NSF/ANSI 61). High-performance ball valves must maintain dimensional stability under high temperature and mechanical load. We utilize forging techniques that refine the grain structure of brass alloys, reducing micro-porosity and eliminating potential leak paths.
Industrial infrastructure expects fluid components to sustain thousands of open-close cycles without degradation. The integration of PTFE (Polytetrafluoroethylene) seats, dual O-ring stem packings, and blow-out proof stems represents the modern engineering baseline for high-reliability valves. Zero-leakage standards are verified via dual-stage pneumatic and hydrostatic seal tests. Our quality policy, "Fine work, no leakage," underpins our manufacturing testing sequence, where every batch undergoes strict verification prior to leaving the line.
Certified under ISO9001-2015 (Quality), ISO14001-2015 (Environmental), and ISO45001-2018 (Occupational Health & Safety).
Utilizing high-precision CNC machines and custom machining lines to maintain dimensional tolerances within 0.01mm.
Every single valve undergoes pressure testing to verify zero-leak performance before shipment.
Our brass formulation complies with environmental safety limits for lead content to protect drinking water networks.
How our components integrate into domestic boilers, district underfloor heating, and HVAC distribution loops.
Underfloor heating manifolds manage hydronic distribution by regulating flow velocity across multiple zones. Combined with our temperature mixing shunts, they balance supply water from boilers to safeguard pipe networks.
Entrained air in hydronic networks causes corrosion and heat transfer inefficiencies. Automatic brass air release valves discharge accumulated gases, while pressure safety valves prevent thermal expansion spikes.
Integrating thermostatic actuators with motorized control valves allows central BMS platforms to adjust localized temperatures, minimizing energy overhead in HVAC networks.
| Parameters | Standard Brass Ball Valves | DZR Corrosion-Resistant Series | HVAC Manifold & Bypass Units |
|---|---|---|---|
| Alloy Grades | HPb59-1, CW617N, C37700 | CW602N, CZ132, Lead-Free C87800 | HPb57-3, CW614N |
| Nominal Pressure | PN16 / PN25 / PN40 | PN25 / PN40 | PN10 / PN16 |
| Temperature Range | -20°C to 120°C (-4°F to 248°F) | -30°C to 150°C (-22°F to 302°F) | 0°C to 95°C (32°F to 203°F) |
| Leakage Test Method | 100% Pneumatic test at 6 Bar | 100% Hydrostatic / Gas Seal Test | Differential Pressure Bypass Test |
| Thread Configurations | ISO 228 (G), NPT, BSPT | ISO 228 (G), NPT | ISO 228 (G) / Compression Ends |
How environmental mandates, smart-grid building codes, and advanced material sciences shape next-generation valve manufacturing.
Global environmental guidelines are accelerating the transition away from traditional leaded brass. Over the next decade, regions such as Europe and North America will continue to lower permissible trace lead limits in drinking water systems. Our engineering department is actively refining processing techniques for silicon-bismuth and lead-free brass formulations to ensure high performance and environmental safety.
The demand for energy-efficient commercial buildings has transformed valves from passive mechanical devices into active nodes on IoT networks. Integrated smart actuators and differential sensor bypass loops communicate water temperatures and pressures in real time, helping to prevent hydronic imbalances.
Answers to key engineering, material, and commercial questions for B2B procurement professionals.
Yuhuan is widely recognized as the "China Valve Capital." This concentrated industrial zone offers a complete supply chain, ranging from local brass foundries to tooling workshops and testing centers. This proximity helps reduce manufacturing lead times, optimize raw material sourcing, and maintain high consistency across large production volumes.
For installations exposed to corrosive or acidic water, we utilize specialized dezincification-resistant (DZR) brass alloys like CW602N. We implement controlled thermal treatments to keep the beta-phase brass below 10%, effectively preventing the selective leaching of zinc and preserving structural integrity.
Yes, custom projects make up a substantial portion of our output. Through our Cokaren brand and Yongda engineering channels, we assist partners from initial 3D design to prototype creation, pressure cycle analysis, and final production. We support custom thread types, custom face-to-face dimensions, and tailored plating configurations.
Every valve undergoes a two-stage sealing test. First, high-sensitivity pneumatic testing is carried out to check for microscopic leaks around the seats and stem seal. Second, hydrostatic pressure tests are performed at 1.5 times the nominal working pressure to verify overall structural stability under load.
We hold certifications including ISO9001-2015 for quality management, ISO14001-2015 for environmental performance, and ISO45001-2018 for occupational health. Additionally, our key valve lines feature CE marks to meet EU pressure equipment requirements, along with relevant local drinking water certifications.
Our manifolds feature integrated thermostatic valves on the return rail. Electric thermal actuators mount directly to these valves, regulating flow in response to signals from our Y9031 Smart Thermostats. This system enables zone-by-zone temperature control and improves heating system efficiency.
At Yuhuan Yongda Fluid Control Co., Ltd., we are guided by a core philosophy: "Customer first, Quality based" and a clear quality policy: "Fine work, no leakage." By maintaining a strong focus on engineering detail and testing, we protect both the safety of fluid systems and the health of the end-users.
Our dedication to quality is matched by our focus on sustainable manufacturing. Through our ISO14001 certified environmental management system, we actively manage resource consumption, minimize manufacturing waste, and invest in clean production technologies.
High-durability safety valves, automatic air releases, PE pipe compression fittings, and custom plumbing accessories.
Looking for a reliable manufacturing partner for custom brass valves, underfloor manifolds, or OEM HVAC fittings? Contact our technical sales department to discuss material grades, volume pricing, and shipping logistics.
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