Yongda
High-performance mechanical filtration components engineered to safeguard critical water networks and heating infrastructure across the Netherlands.
Designed for Dutch municipal wells and pumping stations, offering backflow prevention and heavy-particle inline brass filtration.
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Optimized for closed-loop heat pump installations in the Netherlands, filtering out debris and magnetic scaling efficiently.
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Features heavy-duty nickel plating for enhanced corrosion resistance in Dutch coastal zones and brackish environment networks.
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Meets tight European tolerances for residential underfloor heating and sanitary distribution systems.
View DetailsThe Netherlands presents a unique geographical and technological landscape for water control, HVAC distribution, and industrial filtration systems. With over a quarter of its landmass situated below sea level, water resource management, drainage networks, and closed-loop heating grids require incredibly resilient materials and meticulous engineering tolerances. Filter technologies and inline brass strainer systems are not merely components; they are critical safeguards preventing pump failures, maintaining thermodynamic efficiency in low-temperature district heating systems, and ensuring clean municipal water lines.
In municipal plumbing, the Dutch standard for drinking water is exceptionally high. Systems must operate without chlorine chemical treatments, meaning bio-films and physical particulates must be rigidly managed at the extraction and distribution level. The Best Brass Vertical Spring Check Foot Valve with Brass Filter provides a vital barrier in groundwater pumping, utilizing premium non-corrosive brass strainers to intercept coarse sand and micro-gravel before they enters processing plants.
Simultaneously, the widespread installation of underfloor heating systems (Vloerverwarming) across new estates in Utrecht, Rotterdam, and Amsterdam demands high-performance air venting and magnetic/physical Y-strainers. Without automated venting valves (such as the Automatic Air Release Valve Adjustable series), trapped air pockets accelerate oxidation, creating black iron oxide sludge (magnetite). The placement of a High-Quality Brass Y Type Strainer at the return manifold isolates these particles, preserving the copper piping and high-efficiency circulators.
Entering the Dutch market requires strict adherence to European and local certifications. The Kiwa certification program regulates all materials in contact with drinking water. Our manufacturing process utilizes CW617N and CW602N (Dezincification Resistant - DZR) brass to ensure compliance with European metallic templates. DZR brass is particularly essential in the coastal provinces of Zeeland and North Holland, where high soil salinity can rapidly corrode standard alloys through zinc leaching.
| Material Designation | Standards Compliance | Key Application in Netherlands | Corrosion Resistance Level |
|---|---|---|---|
| CW617N (CuZn40Pb2) | EN 12165 (Forged) | Standard Valves, Manifolds, HVAC Fittings | High Mechanical Strength, Standard Corrosion |
| CW602N (DZR) | EN 12164 / Kiwa Approved | Sanitary Drinkwater Systems, Coastal Municipalities | Exceptional (Dezincification Resistant) |
| Nickel-Plated Brass | EN 12165 + Custom Plating | Industrial T-Strainers & Check Valves | Enhanced Acid/Saline Resistance |
For Dutch OEM brands and mechanical contracting firms purchasing globally, logistics efficiency is critical. Sourcing from our 45,000 square-meter production facility in Yuhuan ensures a steady supply chain to the Port of Rotterdam—the largest seaport in Europe. Through strict ISO9001-2015 processes, each batch of brass fittings, check valves, and underfloor heating manifolds is hydrostatically pressure tested to ensure zero leakage before shipping, reducing overseas inspection costs for European importers.
Founded in 1996, Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) has grown into one of the world's most trusted manufacturers of HVAC components, brass valves, and high-precision water filtration accessories. Located in the "China Valve Capital" – Yuhuan, Zhejiang, our factory footprint spans over 45,000 square meters, with a usable production area exceeding 80,000 square meters.
Under our dedicated brand Cokaren, we carry the promise of "keep flowing, keep warming". By focusing on low-lead environmental brass and advanced manufacturing technologies, Cokaren has successfully expanded into the strict North American and Northern European heating markets, securing strong relationships with distributors across Germany, the Netherlands, and Scandinavia.
Our complete technological roadmap for domestic hydronic networks, combining automated venting, water purification, and thermodynamic stabilization.
Our factory operates under the strict quality policy: "Fine work, no leakage." By integrating advanced multi-axis CNC machines and automated testing benches, we eliminate human assembly errors.
We hold international certifications including ISO9001:2015 (Quality Management), ISO14001:2015 (Environmental Management), and ISO45001:2018 (Occupational Health & Safety), providing European contractors with full corporate compliance assurance.
Direct answers to the most common questions raised by Dutch mechanical engineers, project specifiers, and procurement officers.
Our comprehensive range of European-standard brass manifolds, venting accessories, and zone-control valves.
Designed to discharge air continuously from boiler and central heating loops, preventing cavitation.
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Ideal for high-pressure installations requiring inline micro-filtration and anti-siphon protection.
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High-precision threaded adapters offering leak-free connections in heavy industrial plumbing networks.
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Features user-friendly scheduling to optimize household gas-free energy consumption patterns.
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Heavy duty brass manifold block ensuring even heat distribution across large floor areas.
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Enables compact manifold isolation with an integrated bypass line for hydraulic protection.
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Fast assembly connector optimized for multi-layer PEX plumbing arrays in commercial buildings.
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Meets strict pressure thresholds for secure, leak-free underfloor heating installations.
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