Yongda
Yongda
Engineered for extreme reliability, structural durability, and energy optimization. Our high-precision valves deliver system balance.
Yuhuan Yongda Fluid Control Co., Ltd. (historically recognized as Yuhuan Yongda Plumbing Co., Ltd.) was established in 1996 in Yuhuan, Zhejiang, the globally acclaimed "Valve Capital of China". Operating as a vertically integrated manufacturer, we specialize in high-end product engineering, materials design, automated forge-shaping, and international market distribution.
Our expansive production envelope covers three key areas: industrial brass valves, high-precision pipe fittings, and advanced HVAC products. Positioned in the middle and high-grade bracket, our product development targets lead-free brass formulations, anti-corrosive finishing, and optimized thermal metrics. These engineering focuses satisfy demanding performance benchmarks in the North American and European markets.
Under our premium brand, Cokaren, we pursue the brand mission of "keep flowing, keep warming". Our design team focuses on sleek structural forms, increased hydraulic performance, and structural reliability. Cokaren operates on a fast growth model, establishing partnerships with Tier-1 HVAC developers and municipal utilities worldwide.
High-precision liquid-level regulation systems designed to handle dynamic line pressure, prevent hammer events, and resist corrosion.
Utilizing premium DZR and lead-free brass formulations (CW617N, C37700) to ensure compliance with NSF/ANSI 372 and EN 12164 standards, preventing structural degradation in acidic or aggressive water setups.
Engineered internal paths reduce flow resistance and turbulence. This layout minimizes cavitation risks and noise generation, maintaining uniform delivery rates even during pressure fluctuations.
Equipped with synthetic EPDM or Viton seals to deliver drop-tight shutoff configurations. This mechanism prevents leakage, fluid waste, and valve hunting in both high-pressure and gravity-fed systems.
Apex float valves function as core control points in industrial reservoirs, livestock watering systems, municipal reservoirs, and cooling towers. Designed to automatically maintain liquid levels, these units utilize mechanical leverage to actuate a piston or diaphragm assembly. When the fluid rises, the buoyant force acting on the float rod transfers a closing force to the valve seat, halting incoming flow.
In high-pressure setups, standard float valves often encounter issues like shuttering or pipe vibration. Cokaren’s specialized designs resolve this by utilizing a pilot-operated mechanism. This arrangement redirects system pressure to aid the sealing process, allowing small, light floats to secure high-pressure inlets safely. This configuration minimizes wear on internal components and extends the service life of critical system seals.
Operating within Yuhuan, Zhejiang—the industrial hub for brass manufacturing in China—gives Yuhuan Yongda Fluid Control Co., Ltd. structural supply chain advantages that reduce production costs while ensuring technical precision.
Our facility covers a plant area exceeding 45,000 square meters, with a total usable area of over 80,000 square meters. We run more than 600 sets of advanced manufacturing and testing devices, including 80+ specialized multi-axis CNC machine units. This technical setup enables us to perform precision machining, control tolerances, and manage rapid production runs for custom OEM orders.
By sourcing raw brass alloys locally, we reduce logistics delays and secure competitive raw material pricing. Our production lines integrate hot forging, precision threading, surface treatment, and 100% pneumatic-hydraulic pressure testing under one roof, maintaining control over product quality and delivery timelines.
Integrating water filtration, thermal stabilization, and automatic air release to maximize energy efficiency in modern hydronic structures.
Our energy distribution setups are engineered to structure domestic water distribution and heating media control. Modern floor heating systems rely on precise pressure levels and air-free circulation to work efficiently. Air pockets can restrict flow, reduce heat transfer, and cause pipe corrosion. Our brass automatic air vents resolve this by constantly venting accumulated micro-bubbles from the system.
Filters out 98% of particulates, protecting downstream heat exchangers.
Regulates boiler intake and return with a chrome-plated ball spool.
Automatically vents air from hydronic lines to maintain flow stability.
Mixes supply and return water to maintain stable temperatures.
Yuhuan Yongda Fluid Control Co., Ltd. operates in strict compliance with international standards, holding certifications for ISO 9001:2015 (Quality Management System), ISO 14001:2015 (Environmental Management System), and ISO 45001:2018 (Occupational Health and Safety Management System).
Our quality control process is based on a zero-defect policy: "Fine work, no leakage". Every production batch undergoes strict materials analysis using optical emission spectrometers to verify brass composition. Following assembly, all valves undergo shell pressure testing and seat seal testing to verify performance limits before packaging.
We work with international testing laboratories to certify our products for markets worldwide. We design our components to match WRAS, CE, and CSA standards, ensuring smooth installation and regulatory compliance for municipal and commercial projects.
An evaluation of structural changes, materials regulations, and smart building integration affecting the global valve market.
The global fluid control market is adapting to stricter lead-free regulations. Regulatory authorities in regions like North America and the EU are lowering permissible lead limits in potable water systems. This change requires manufacturers to transition from traditional leaded brass to lead-free alternatives. This shift calls for specialized tooling and modified forging temperatures to prevent internal cracking, a manufacturing process Cokaren has refined over several years.
Another key trend is the integration of electronic control systems into traditional mechanical designs. Building management systems (BMS) are increasingly using smart motorized actuators and balancing valves to monitor pressure changes and fluid delivery in real-time. This connectivity supports preventive maintenance programs, reducing operational downtime and preventing damage from system leaks.
Furthermore, global buyers are seeking suppliers with comprehensive design capabilities. Customers look for manufacturing partners that can provide custom components, tailor thread types (NPT, BSP, G), adjust seal profiles, and offer custom packaging options to streamline regional distribution.
Answers to common engineering queries regarding valve selection, brass materials compliance, and order logistics.
We use standard brass alloys including CW617N, CW614N, and H59-1 for heating systems. For potable water installations, we supply lead-free brass and Dezincification Resistant (DZR) brass that complies with NSF/ANSI 372 and European lead limits, protecting components from corrosion and dezincification.
Our automatic air release valves purge accumulated air from hydronic pipe runs. This prevents air locks that can restrict warm water flow, maintains even heat distribution across zones, and protects pumps from cavitation damage.
Yes. We provide complete OEM and ODM services. Utilizing our in-house engineering team and 600+ advanced manufacturing machines, we can customize thread layouts, pressure ratings, seal configurations, and apply custom branding to meet your regional market requirements.
All our valves undergo 100% pneumatic-hydraulic pressure testing before packaging. We test the valves for shell strength and seat tightness, verifying they meet rating requirements and remain leak-free.
Explore our complete range of balance control valves, compression fittings, and specialized plumbing accessories.
