Yongda
Yongda
Explore our foundational range of brass valves, fittings, and HVAC manifolds engineered for maximum integrity and durability under high-pressure gas and water systems.
In modern industrial and municipal infrastructures, the safe distribution of gases requires high-integrity components capable of operating flawlessly under high pressures and varying temperature ranges. Gas systems—including Liquefied Petroleum Gas (LPG), Natural Gas (NG), and modern bio-gas mixtures—present unique engineering challenges. Unlike water, gases are highly compressible, and even minor microscopic fissures can result in major safety hazards.
As a leading authority in the design and manufacture of valve equipment, Yuhuan Yongda Fluid Control Co., Ltd. utilizes forged brass structures to design and build gas valves that exceed international performance expectations. Brass alloys, specifically CW617N, provide the optimal mechanical strength and corrosion resistance required to prevent dezincification and cracking in volatile gas environments.
Today, regulatory bodies globally demand strict compliance certifications, such as EN 331, CSA, and UL. Top-tier manufacturers must integrate chemical composition analyzers and dynamic hydrostatic testing systems to ensure that every single batch of brass possesses the physical resilience required for the ultimate utility connection.
Our operational metrics demonstrate our capacity to support large-scale OEM/ODM projects across international territories with verified quality assurance.
Our product line is designed to fit seamlessly into diverse mechanical infrastructures. Below are the core applications where our technical specifications provide distinct operating security.
Integrated into domestic metering cabinets and appliance shut-offs. Featuring blowout-proof stems and dual NBR O-rings, these valves guarantee zero gas escape under standard residential municipal pressures, protecting families and keeping homes secure.
Utilized in water distribution manifolds and mixing shunts. Products like our Y1001 Manifold and Y5020 Mixing Shunt balance fluid dynamics, stabilizing temperatures across large building levels while optimizing boiler and geothermal heater performance.
Designed to regulate complex manufacturing piping. Precision valves with chrome-plated brass spheres reduce wear caused by internal particle friction, extending operational longevity and lowering maintenance downtime in petrochemical and production facilities.
Operating from Yuhuan, Zhejiang—known as the "China Valve Capital"—Yuhuan Yongda Fluid Control Co., Ltd. benefits from a highly integrated local industrial cluster. This ecosystem provides unmatched manufacturing speed, cost efficiency, and materials security. From raw material sourcing to structural forging, machining, surface plating, and testing, every phase of production is managed within a tight geographic zone.
Our facility spans a physical footprint of over 45,000 square meters, with an actual usable floor area reaching 80,000 square meters. The plant houses more than 600 sets of advanced production and testing equipment, including 80+ specialized machine tools. This extensive machinery allows us to adapt to changing production scales, manage large bulk orders, and provide competitive OEM/ODM solutions without sacrificing speed.
Our brand, Cokaren, is built on the promise of "keep flowing, keep warming". By leveraging Yuhuan’s supply chain efficiency, we ensure stable logistics, timely delivery, and precise adherence to customer specifications across the globe.
Our system solutions manage energy flow within residential and commercial zones, integrating water filtration, boiler regulation, and smart digital thermostats.
Our systems coordinate flow control with temperature feedback, reducing fuel waste and protecting mechanical pipes from thermal shock and pressure surges.
The first line of defense in domestic water sanitation, designed to filter out 98% of system sediment and pipeline particles.
Controls the inflow and outflow of cold and hot water in heating boilers, utilizing a highly durable spherical brass spool.
Automatically discharges excess air in heating loops to prevent airlocks and ensure stable system operation.
Mixes cold and hot water lines to stabilize downstream temperatures and protect plumbing pipes from high-temp fatigue.
Integrates connected home appliances to regulate room temperatures via digital algorithms.
Filters system impurities, isolates downstream manifolds, and displays water pressure and temperature.
As carbon reduction targets influence the global energy transition, fluid control technology must adapt. Modern municipal gas systems are gradually testing hydrogen-blended natural gas to lower greenhouse emissions. Hydrogen, having the smallest molecular size of any element, can compromise lower-grade materials and cause micro-leakages in conventional valve seats.
Yongda's metallurgical roadmap focuses on the development of hydrogen-ready brass alloys and advanced elastomer seals. By adjusting the proportions of copper, zinc, and trace elements, our engineers are improving the resistance of our products to stress corrosion cracking (SCC) and gas permeation.
Furthermore, our digital division is integrating electronic actuators with smart home APIs. By combining mechanical reliability with digital sensing, Cokaren systems can detect anomalous pressure changes and automatically shut down local gas or water loops before hazards develop. This smart protection technology forms the foundation of modern, automated utilities.
Our quality pledge, "Fine work, no leakage," defines our production activities. Over three decades of operations, we have built a rigorous quality management structure. This is backed by international system certifications, including:
Every valve product undergoes 100% pneumatic testing under water. This process checks both the shell integrity and seat tightness, verifying leak-free operation prior to packaging and dispatch.
Explore our classic, specialty, and custom OEM line of valves and distribution headers designed for global mechanical engineers.
Dual-function isolation valve featuring a built-in mesh screen to filter out mechanical debris.
Ensures manual adjustments to thermal lines, maintaining stable hydronic performance.
Maintains consistent fluid temperature by mixing return flows with hot boiler output.
Distributes flow to multiple heating loops, balancing flow rates in larger installations.
Durable outdoor utility brass tap with deep threaded hose connections.
Full-port brass gate valve designed for isolating main water supplies with low fluid friction.
Heavy-duty brass fittings providing stable linkages for municipal metering assemblies.
Precision-made barb profiles ensuring tight grip on flexible hoses and tubing.
Providing industry buyers with technical details on metallurgy, certifications, and application engineering.
Complete your installations with our high-end actuators, thermostats, venting valves, and balancing radiator manifolds.
