Yongda
Yongda
Premium brass valves, digital thermostats, and connection adapters optimized for commercial plumbing networks, hydronic loops, and district heating systems.
How wafer disc technology and high-precision brass valves power modern residential, commercial, and industrial HVAC/water supply infrastructure.
Modern commercial buildings demand micro-climates that require precise hydronic heat distribution. Integrating multi-port brass manifolds with wafer check valve disc technology prevents reverse thermal siphoning and cross-contamination of cooling loops, reducing system-wide energy losses by up to 18%.
Water hammer and backflow present severe structural risks to municipal piping networks. Incorporating wafer disc elements with swift spring-assisted shut-off mechanisms eliminates back-pressure surges. This is the frontline of protection for smart water meters, volumetric sensors, and localized water filtration plants.
As the world pivots toward geothermal and air-source heat pumps, the requirement for low-pressure-drop valves has spiked. Brass mixing shunts, venting valves, and wafer disc assemblies maintain laminar flow patterns, ensuring heat pumps operate at optimal Coefficient of Performance (COP) levels across variable loads.
With the rapid growth of smart cities and strict carbon-neutrality mandates, high-grade brass fluid valves and wafer check discs are no longer basic components; they are core energy-saving devices.
The valve manufacturing cluster in Yuhuan, China, represents over 50% of the world's commercial brass valve exports. This hub offers unique advantages in raw material supply chain coordination, high-precision hot forging, and advanced surface finishing technologies.
As global supply chains demand lead-free brass formulations to satisfy stringent drinking water standards (such as NSF/ANSI 372 and European REACH regulations), top manufacturers are investing heavily in automated spectrometry and low-lead alloy metallurgy to keep pace with changing standards.
Established in 1996 in "China Valve Capital" – Yuhuan, Zhejiang, Yuhuan Yongda Fluid Control Co., Ltd. has developed into a leading designer and manufacturer of brass valves and HVAC components.
Spanning over 45,000 square meters of factory space (with an actual usable area of 80,000 square meters), we operate more than 600 sets of advanced production and testing equipment, including 80+ specialized machine tools. This powerful infrastructure allows us to serve clients across 20+ countries, with a primary focus on North American and European markets.
Under our premium brand Cokaren, we carry forward our core promise: "Keep flowing, keep warming". Our design team focuses on sleek aesthetics and engineering reliability, ensuring that residential heating and water distribution systems remain safe, comfortable, and efficient.
Core Values: Struggle, Enterprising, Pragmatic, Innovative
Tenet: Customer First, Quality Based
Quality Policy: Fine Work, No Leakage
Our engineering department utilizes high-grade alloys, precision forging, and automated quality verification protocols to deliver superior product performance.
We source only high-density brass alloys, specifically targeting CW617N (EN 12165) for European standard products and Dezincification Resistant (DZR) brass (e.g., CW602N) for acidic or high-chloride municipal water systems. Every melt undergoes optical emission spectrometry (OES) analysis to verify chemical compliance before forging.
By employing 400-ton hot forging presses and automated temperature-controlled induction heaters, we eliminate internal porosity and micro-cracking in our valve bodies. Our strict "Fine Work, No Leakage" policy is supported by dual-stage air-under-water pressure testing at 100% of production capacity.
Our automated plating line provides precise control over nickel and chrome deposition thickness (5–8 μm). This layer prevents dezincification and galvanic corrosion when valves are connected to dissimilar metals like copper or steel, extending the lifespan of our installations to over 25 years.
A technical layout of our high-performance brass controls designed to optimize fluid transmission and temperature balancing across commercial systems.
The first line of defense in domestic water sanitation, filtering 98% of line impurities.
Controls water inflow and outflow in boilers, utilizing a high-precision spherical spool design.
Automatically discharges excess air in heating loops to prevent cavitation and ensure system stability.
Blends return and supply water to stabilize system temperatures and protect downstream piping.
Advanced digital controller that integrates room temperature feedback with hydronic actuator control.
Combines filtration, flow isolation, and pressure monitoring for manifold head connections.
Distributes system fluid to individual room loops, allowing for precise zone balance controls.
Heavy-duty brass connections that prevent piping stress and secure loop links.
Embracing smart control systems, clean metallurgy, and automated manufacturing processes to meet tomorrow's industrial flow demands.
We are shifting our manufacturing output toward silicon-modified and bismuth-bearing lead-free brasses. This transition ensures compliance with future international drinking water standards while maintaining the excellent hot forging characteristics of traditional brass.
Our upcoming Cokaren flow accessories will feature built-in smart sensors. This development allows for real-time monitoring of flow rates, temperature variations, and pressure drops, transmitting diagnostics directly to building management systems (BMS).
We continue to upgrade our production floor with multi-axis CNC machines and robotic assembly stations. This automation ensures machining tolerances within ±0.01 mm, maintaining consistent sealing quality across high-volume production runs.
Operating with certified processes: our production systems are fully audited and certified under ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 standards.
To support international distributors and project developers, we maintain compliant engineering documentation. This includes CE declarations of conformity for Europe, NSF certifications for North America, and localized technical drawings in 3D CAD formats.
Our global logistics and support teams coordinate customized packaging, private labeling, barcoding, and clearance documentation. This support minimizes customs delays and facilitates direct integration into client warehouse systems.
Understanding the raw material indexes, production variables, and volume thresholds that determine our commercial pricing structure.
Our product pricing is linked directly to the London Metal Exchange (LME) copper prices. This linkage offers transparent, formula-driven pricing updates for long-term supply agreements.
Depending on application requirements, buyers can select nickel-plated, chrome-plated, or raw polished finishes. Custom plating thickness levels can be specified to meet target corrosion resistance guidelines.
As a factory-direct manufacturer, our standard production MOQs range from 1,000 to 5,000 units per line item, depending on component size and customization requirements.
Answers to common technical, metallurgical, and commercial inquiries from procurement managers and engineers.
A: Our standard valves are forged using high-grade brass (CW617N, H58, or H59). For check valve applications requiring specialized resistance, we offer stainless steel wafer discs, as well as high-performance EPDM, NBR, or Viton elastomer seal seats.
A: We maintain a strict "Fine Work, No Leakage" quality policy. Every single valve is subjected to automated air-under-water and pressure-decay leakage testing. This testing is performed at 1.5 times the nominal working pressure (PN16/PN25) before packaging.
A: Yes, we provide full OEM/ODM manufacturing. This service includes custom hot stamp branding on the valve body, customized packaging designs, and private labeling to align with your brand standards.
A: For standard brass fittings and valves, production lead times average 35 to 45 days. Custom-designed components requiring new forging tooling may take an additional 15 to 20 days for prototype verification.
A: Yes, we supply low-lead and lead-free brass alloys that meet European REACH regulations, CE certification requirements, and US EPA Safe Drinking Water Act standards.
A: You can reach out directly to our sales department. Please include your required alloy specifications (e.g., CW617N, DZR), size dimensions, surface finish preferences, and estimated yearly volumes for a customized quote.
Explore our primary product lines, which have been field-tested in complex HVAC setups and municipal projects worldwide.
Designed to protect downstream components by combining a solid ball valve mechanism with a removable wire-mesh strainer.
Enables manual hydronic flow adjustment to regulate heating loops and optimize indoor climate comfort.
Regulates return water mixing in radiant underfloor systems to protect boiler components from thermal shock.
Heavy-walled brass distribution manifold designed to support multiple hydronic zones with individual balancing valves.
A robust brass outdoor tap engineered for reliability in challenging weathering conditions.
A full-bore gate valve designed to minimize fluid friction and pressure drop in utility pipelines.
Precision-machined brass pipe connectors designed for secure utility water meter installations.
Barbed connectors designed for secure hose installations in industrial air and water applications.
Explore our full line of specialized brass ball valves, compression elbows, and digital temperature control equipment designed for distribution systems.
