Yongda
Yongda
Explore our premium selection of brass fittings, temperature control solutions, and floor heating system actuators engineered for international distribution networks.
Full port ball valves, also called full bore, maintain an unrestricted flow path equal to the pipe's internal diameter. This eliminates friction loss and prevents turbulence inside critical pipelines.
Utilizing forged brass alloys like CW617N and DZR ensures high tensile strength and superior dezincification resistance, crucial for clean drinking water and severe district HVAC operations.
Incorporating double PTFE seals and heavy-duty blow-out proof stems allows our valves to deliver a leak-free lifecycle exceeding 100,000 operations under varying pressures.
Founded in 1996 and located in Yuhuan, Zhejiang—the recognized "Valve Capital of China"—Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) has grown into an elite manufacturer specializing in middle and high-grade brass valves, fittings, and sophisticated HVAC control equipment.
Spanning a modern production footprint with a physical usable area exceeding 80,000 square meters, we maintain our global growth strategy under our premium brand Cokaren. Guided by the mission "keep flowing, keep warming," we guarantee robust fluid dynamics for residential and commercial heating systems worldwide.
Cokaren is the vanguard brand of Yongda, focusing on providing consumers and piping contractors with components featuring more refined appearances, high corrosion resistance, and intuitive controls.
"Keep flowing, keep warming. We construct water system components to bring lasting comfort into every home."
With professional manufacturing workflows integrated from smelting to testing, Cokaren works daily to develop dynamic, world-class products that exceed the baseline requirements of municipal HVAC networks.
We run rigorous inspection routines. Every valve batch is subjected to spectrum validation, pneumatic air sealing tests, and mechanical tensile stress tests. We operate in absolute conformity with primary environmental and occupational safety guidelines.
Our operational frameworks deploy a meticulous quality assurance scheme. Traceability charts cover raw material bar supply, high-speed forging, thread trimming, and automated assembly line operations.
To support eco-friendly industrial operations, our production systems capture waste shavings and process water, aligning with local and international environmental initiatives.
Protecting our 600+ workforce is standard operating procedure. Our automated forging chambers and CNC facilities utilize safety barriers to maintain safe, predictable factory operations.
Our products conform to major European and North American quality codes, including CE approval and lead-free plumbing regulations. By utilizing CW617N brass for European installations and low-lead copper matrices for the American potable water sectors, we ensure compliance across regional municipal grids.
Our components form a comprehensive fluid network designed to maximize fuel efficiency, heat retention, and hydraulic balancing inside residential and commercial properties.
The first line of defense in domestic water sanitation, filtering out 98% of coarse suspended solids and pipe sediments.
Manages hot and cold thermal circulation circuits in boilers with low-friction spherical spools.
Expels trapped air pockets in heat pump networks to prevent cavitation and ensure smooth water delivery.
Mixes supply and return lines to prevent thermal shock in radiant heating concrete structures.
Provides precise thermal balancing using smart control integration to reduce energy waste.
Monitors pressure drops, tracks system temperature, and filters line debris in commercial heating setups.
Distributes flow patterns across multi-zone radiant heating configurations for even heat delivery.
Monitors pressure ranges to protect boilers, expansion vessels, and floor networks from spikes.
Sourcing valves from Yuhuan provides major supply chain advantages for international distributors, wholesalers, and mechanical contractors.
Located in Yuhuan, our facility has direct access to raw material refineries, forging tooling engineers, and deepwater logistics ports. This keeps procurement costs low and simplifies supply chain logistics.
Our inventory of 600+ production and testing machines includes over 80 specialized CNC machine tools. This setup allows us to handle high-volume OEM orders and complete custom runs quickly.
We offer full-service OEM support. From CAD modeling and metal stress analysis to custom laser engraving and retail packaging, we tailor products to your local market requirements.
Global regulations require clean drinking water systems to use lead-free brass. Modern installations use low-lead brass alloys like C37700 or bismuth-doped alternatives to comply with drinking water safety codes while maintaining durable threads.
Smart buildings rely on motorized full port ball valves that integrate directly with smart thermostats and BMS (Building Management Systems) for real-time flow adjustments.
In regions with aggressive, soft water, standard brass can lose zinc, causing structural failure. DZR alloys prevent this type of corrosion, ensuring long-term reliability for buried municipal service lines.
Find answers to technical questions about fluid dynamics, manufacturing processes, and compliance standards.
Browse our line of mixing shunts, filter valves, boiler connections, and garden hose fittings designed to keep fluid systems running smoothly.
