Yongda
Yongda
Explore our top-tier brass fittings, automatic venting assemblies, and thermodynamic control systems designed for strict reliability.
Optimized brass butterfly union configuration with professional-grade seals for high flow stability.
Get Quotes
Automatic degassing mechanism and heavy-duty brass tail fittings for optimized underfloor loop efficiency.
Get Quotes
Forged corrosion-resistant brass elbows providing robust leakage-free structural junctions.
Get Quotes
Reliable gas release capabilities targeted for closed hydronic circuits and system stabilization.
Get Quotes
Precision-molded angle structures designed specifically for compact manifold cabinets.
Get Quotes
Equal tee distribution junctions crafted to tolerate higher pressure loads in clean water piping.
Get Quotes
Lockable mechanism configuration providing reliable outdoor flow restriction and safety assurance.
Get Quotes
Combines reliable ball shutoff and particle filtration to safeguard modern boiler elements.
Get QuotesWithin modern industrial piping systems and municipal HVAC networks, Disc Check Valves are critical components that maintain unidirectional fluid pathing. Operating as silent backflow preventers, these valves rely on a disk element pressed against the flow boundary. The spring-loaded mechanism ensures immediate closure when line pressure drops below the dynamic cracking threshold. This quick closure mitigates the destructive effects of water hammer, protecting pumps and delicate instrumentation.
Unlike traditional swing check valves that depend heavily on gravitational forces and fluid reverse speed for closure, spring-assisted disc check valves can be mounted in any orientation (horizontal, vertical up, or vertical down). They provide faster reaction times, significantly minimizing backflow distance and thermal system stresses.
Our industrial experience indicates that selecting the correct material formulation (such as CW617N or lead-free C37700 brass alloys) is essential for chemical compatibility and longevity. When evaluating manufacturers for commercial projects, engineering departments must prioritize components with structural integrity that resist dezincification (DZR brass) to counter corrosive localized environments.
Founded in 1996, Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) is situated in Yuhuan, Zhejiang—widely recognized as the "China Valve Capital". As a leading plumbing valve manufacturer, we integrate research, product design, testing, advanced CNC manufacturing, and global sales.
Our core portfolio centers around brass valves, custom pipeline fittings, and energy-efficient HVAC products. Positioned in the middle and high-grade bracket, our components prioritize environmental sustainability, earning a strong reputation in North America, Europe, and neighboring global markets.
To support high-volume projects, our brand Cokaren carries the promise of "keep flowing, keep warming," delivering reliable, refined water accessories to residential and industrial users globally.
With a total usable production footprint reaching 80,000 square meters and more than 80 sets of specialized machinery, our manufacturing capacity meets strict global custom tolerances.
Operating conditions vary significantly across geographical regions and systems. Here is how our disc check valves and companion controls adapt to localized application demands:
In municipal residential systems across North America, heating loops utilize underfloor mixing systems. Closed loop systems rely on spring check valves to prevent thermal siphoning and backflow, ensuring stable distribution across manifolds.
With high-density urbanization requiring centralized thermal hubs, our mixing systems, temperature control valves, and automatic air release vents ensure distribution lines operate without trapped gas pockets.
High-pressure steam and condensate return loops require robust components. Integrated boiler ball valves and custom spring-loaded check systems prevent pressure spikes and process backflow.
Our quality control program operates under the directive: "Fine work, no leakage." Every manufacturing run undergoes strict validation, from material sourcing to final pressure testing.
We aim to continuously improve employee welfare, linking corporate development with personal growth. This alignment fosters a dedicated team focused on manufacturing precision fluid systems.
Industrial HVAC control requires a network of valves working together. Yongda designs integrated systems to optimize thermal and water distribution efficiency.
The first line of defense in domestic water sanitation, designed to filter out 98% of particulate impurities in the incoming service pipeline.
Features a spherical spool to control cold and hot water inflow and outflow in industrial boiler circuits.
Designed to discharge air pockets in heating circuits, preventing air locks and maintaining pump efficiency.
Mixes supply and return water to stabilize system temperatures, protecting underfloor piping from thermal shock.
Monitors and coordinates room temperature by controlling manifold actuators.
Filters debris and controls manifold inlets while monitoring pressure and temperature.
Distributes flow to individual zones, balancing underfloor heating loops.
Our quality management is backed by three key international standards, ensuring compliance and manufacturing consistency:
These certifications demonstrate our commitment to high-grade industrial demands and project compliance.
Industrial fluid control is shifting toward smart, lead-free systems. At Yuhuan Yongda, our product roadmap addresses these changing regulatory and technological requirements:
We are transitioning our brass lines to lead-free (under 0.25% Pb) and dezincification-resistant (DZR) alloys, meeting the strictest international drinking water regulations.
Integrating pressure and temperature sensors directly into valve bodies to provide real-time performance data for industrial networks.
Using finite element analysis (FEA) and computational fluid dynamics (CFD) to optimize internal valve shapes, reducing flow resistance and energy loss.
Operating from Yuhuan, Zhejiang, allows us to provide reliable lead times and competitive pricing. This region is home to a highly concentrated brass manufacturing ecosystem, from raw material supply to tooling shops, hot-forging facilities, and surface treatment services.
We manage tooling, forging, CNC machining, assembly, and testing in-house. This vertical integration keeps quality consistent, reduces waste, and helps shield buyers from supply chain disruptions.
A selection of our popular brass fittings, zone manifolds, and specialized heating system components.
Combines isolation and filtration to save installation space.
Manual adjusters for balancing hydronic loops.
Maintains safe return temperatures in heating lines.
Multi-port distribution manifolds for hydronic systems.
Durable outdoor taps with threaded connection ends.
Standard full-port gate valves for isolation service.
Pre-machined connecting tubes for water line meters.
Corrosion-resistant hose adapters for secure clamping.
Request specifications and volume quotes directly from our manufacturing facility.
High-grade brass elbow fitting providing a secure, sliding-sleeve connection for PEX tubing.
Request Quote
Heavy-duty, corrosion-resistant brass hose connectors designed for outdoor use.
Request Quote
A compact mini-valve featuring a polished chrome finish, ideal for space-constrained piping layouts.
Request Quote
Compression elbows designed for quick installation without soldering or special tooling.
Request Quote
Reliable stop valve mechanism for isolating supply lines in plumbing installations.
Request Quote
NPT-threaded compression fittings engineered to match standard North American plumbing specifications.
Request Quote
Spring-loaded pressure relief safety valves designed for water heaters and boiler systems.
Request Quote
Quarter-turn isolation angle valve equipped with a mesh filter to protect sanitary fixtures.
Request Quote