Yongda
Yongda
Explore our high-tier, eco-friendly brass components and thermal distribution technologies optimized for durability and system reliability.
A Technical Insight into High-Efficiency Fluid Control Architectures.
In modern architecture and municipal infrastructure, fluid distribution demands absolute reliability, precise thermodynamic balance, and eco-friendly composition. The global transition toward low-carbon operations has revolutionized how flow networks are designed. Engineering a resilient distribution network requires a deep understanding of materials science, structural integrity, and smart actuation systems.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) has stayed at the cutting edge of this evolution since 1996. Our comprehensive solutions support advanced heating, ventilation, and air conditioning (HVAC) projects, water sanitization loops, and commercial gas infrastructures. By developing zero-leakage, high-durability products under our premium Cokaren brand, we ensure our global partners can build and buy full valve systems that excel in performance and longevity.
Founded in 1996 in Yuhuan, Zhejiang—widely recognized as the "China Valve Capital"—Yuhuan Yongda Fluid Control Co., Ltd. has established itself as an industry-leading manufacturer of premium plumbing valves, brass fittings, and high-performance HVAC products.
Our solutions focus on mid-to-high-grade systems, emphasizing environmental compatibility, durability, and hydraulic efficiency. These core attributes have made our products a preferred choice in major international markets, including North America, Europe, and Asia.
Under our brand promise "Keep Flowing, Keep Warming", Cokaren products combine refined aesthetics with superior operational reliability. We are committed to developing advanced residential and commercial water system accessories that bring lasting comfort and safety to homes and business environments worldwide.
Yongda's industrial complex has a physical footprint of over 45,000 square meters, with an actual usable production and warehousing area of 80,000 square meters. Our facility features more than 600 sets of advanced manufacturing and testing equipment, including 80+ specialized CNC machine tools. This advanced setup allows us to handle every phase of production in-house—from hot forging and precision machining to surface treatment and final testing.
Our digital production lines are designed to provide both flexibility and stability. By sourcing high-purity copper billets and maintaining strict alloy standards (including CW617N, DZR, and low-lead formulas), we prevent raw material variations from affecting the final product. Additionally, our automated logistics and real-time inventory systems protect our supply chain from sudden market shifts, guaranteeing consistent delivery times for our global OEM and distribution partners.
Solving supply chain complexity, material compliance, and system integration issues for international buyers.
Purchasing agents often struggle with shifting environmental laws, such as Europe’s REACH and RoHS or North America’s NSF/ANSI 372 lead-free standards. Our valves use CW617N, CW602N (De-zincification Resistant), and lead-free alloys to ensure your inventory stays fully compliant with local drinking water laws.
Buying individual components from multiple vendors can lead to installation issues and uneven thermal performance. We offer complete system designs—combining manifolds, thermal actuators, mixing units, and radiators—so all parts work together smoothly and perform reliably.
A single leaking valve can damage property and harm a distributor's reputation. Yongda follows a strict quality policy: "Fine work, no leakage." We carry out 100% pneumatic testing on every valve we produce to ensure they are completely leak-free before shipment.
Integrating distribution hardware, thermal control units, and filtration systems to maximize energy efficiency.
Our energy distribution network is built to handle the complex thermal layouts found in modern houses and commercial properties. By pairing water filtration at the intake point with dynamic mixing units, balancing manifolds, and smart actuators, the system keeps room temperatures consistent while minimizing energy loss.
Whether you are installing floor heating loops or multi-zone boiler configurations, this integrated approach protects pipelines from pressure spikes, scale buildup, and heat degradation.
The first line of defense in domestic water sanitation, filtering out 98% of pipeline impurities and protecting downstream valves.
Equipped with a high-durability spherical spool to control boiler water inlet and outlet loops under extreme temperatures.
Automatically discharges excess air in heating loops and heat pump systems to prevent cavitation and dry-firing.
Blends cold and hot water lines to stabilize temperatures, protecting underfloor pipes from high heat damage.
Connects with electric thermal actuators to adjust room temperatures and cut down on energy consumption.
Filters debris, controls back-end manifold loops, and measures temperature and pressure in real time.
Distributes water evenly across different rooms, working with actuators for zone-by-zone climate control.
Explore our complete design manuals and plumbing schematics for major heating projects.
Review the technical specifications, applications, and material grades across our core product families.
| Valve Type | Primary Material | Working Pressure (PN) | Temperature Range | Key Performance Certifications |
|---|---|---|---|---|
| Radiator Valves (Angle/Lockshield) | CW617N / Nickle-Plated Forged Brass | PN10 - PN16 | -10°C to 110°C | CE, EN215 Compliant |
| Boiler Ball Valves with Filter | DZR Brass / HPb59-1 | PN16 - PN25 | -20°C to 120°C | ISO9001 / CE Approved |
| HVAC Manifolds & Mixing Systems | Heavy-Duty Forged Brass / SUS304 | PN10 | 0°C to 95°C | ISO14001 / Occupational Health Guarded |
| Automatic Venting & Relief Valves | Low-Lead Brass / EPDM Seals | PN10 | Max 115°C | Strict Hydronic Seal Standards |
| Press & Sliding PEX Fittings | DZR CW602N / Lead-Free Brass | PN16 | -20°C to 95°C | ASME / CSA Compatible Designs |
We believe in a balanced, growth-oriented environment captured in our values: Struggle, Enterprising, Pragmatic, and Innovative. By prioritizing customer needs and product quality, we work to build a reliable company that supports our employees' well-being and aligns personal success with our corporate goals.
Our quality control measures are integrated into every stage of production. From raw billet inspection using spectrometers to automated machining and pressure-testing, we ensure every part meets our strict leakage standards.
Yongda holds key international management system certifications, demonstrating our commitment to quality, environmental safety, and workplace health:
Developing next-generation smart, sustainable, and lead-free fluid control products.
We are actively expanding our use of bismuth and silicon-based lead-free brass formulations. These new materials allow our products to meet strict global drinking water regulations without losing the mechanical strength and machinability of traditional alloys.
We are integrating electronic actuators, pressure monitors, and wireless flow sensors directly into our manifolds. This lets building systems track flow rates and manage energy use in real time, helping to lower carbon footprint.
Using fluid dynamics simulation software, we design internal flow chambers that minimize friction and pressure drops. This increases system performance, reduces stress on circulatory pumps, and lowers energy needs.
We work with distribution partners in North America, Europe, and Asia to help simplify import processes, handle local customs clearances, and keep product lines well-stocked.
We provide full design services, customized packaging, and laser-etched logos to help OEM buyers build their brand presence with proven product engineering.
All Cokaren and Yongda products are backed by our comprehensive engineering warranty. We provide clear technical manuals, flow charts, and direct support to solve troubleshooting issues quickly.
Located close to Ningbo and Shanghai ports, we use our shipping networks to keep transit times consistent, minimize logistics delays, and simplify global deliveries.
Clear answers to common questions about material selection, compatibility, and ordering options.
For drinking water lines, we use low-lead and lead-free brass formulations that meet European and North American guidelines (such as CW617N, DZR, or NSF/ANSI 372). These alloys prevent heavy metals from leaching into water supplies, keeping system operations safe and compliant.
We follow a strict quality policy of "Fine work, no leakage." Every single valve goes through automated pneumatic testing under water. This process helps us check the integrity of internal seals, threads, and joints under high pressure before packaging.
Yes, custom designs are a core part of our business. With over 80 specialized CNC machine tools and our in-house engineering team, we can design custom valves, update thread layouts (NPT/G/BSPT), and provide custom packaging options to match your brand requirements.
Depending on order size and customization requirements, standard production times run between 30 to 45 days. Our close proximity to major ports like Ningbo and Shanghai helps us arrange shipments quickly and keep delivery schedules reliable.
Complete your supply chain with our certified line of fittings, actuators, and thermal control accessories.
Ball Valve with Filter Description One of the outstanding features is the integrated mesh.
The Temperature Control Valve Description The Manual Temperature Control...
Mixing Shunt Working Principle The thermostat...
Manifold Description The manifold refers...
Horse Bibcock Description Introducing Cokaren's...
Gate Valve Description Introducing Cokaren's...
Water Meter Tubes Description Introducing Cokaren's...
American Brass Hose Barb Fittings Description Introducing Cokaren's...
