Yongda
Yongda
In modern industrial infrastructure, heating ventilation and air conditioning (HVAC) systems, and complex water utility matrices, the stability of fluid control components remains the ultimate baseline for systemic integrity. Selecting an optimized valve series is not merely a purchasing task; it is a critical calculation of lifecycle expenses, operational security, and precision engineering alignment.
As a leading authority in fluid control technology, Yuhuan Yongda Fluid Control Co., Ltd. (formerly known as Yuhuan Yongda Plumbing Co., Ltd.) has engineered robust and high-performing fluid control systems since 1996. Located inside China's historical valve production hub in Yuhuan, Zhejiang, our enterprise blends manufacturing scale, advanced material science, and regulatory compliance into an integrated supply infrastructure.
We deliver an extensive portfolio tailored for high-demand regions, particularly Europe and North America. Under our corporate brand, Cokaren, we carry forward our commitment: "keep flowing, keep warming". Our design philosophy bridges the gap between high-durability hardware, intelligent distribution nodes, and green, eco-friendly metal compositions.
Yuhuan, Zhejiang is globally recognized as the "Valve Capital of China". The geographic concentration of specialized metallurgy, precision molding, automated assembly, and testing laboratories provides a robust industrial ecosystem. This concentration translates into rapid product development lifecycles, rigorous structural compliance, and significant cost advantages for global purchasers.
Yuhuan Yongda maximizes this localized infrastructure by maintaining full control over the vertical production pipeline. With over 80 sets of specialized machine tools among our 600+ advanced manufacturing machines, we manage raw brass analysis, hot forging, high-precision machining, custom electroplating, multi-stage pressure testing, and final assembly entirely within our facility. This vertical integration reduces logistics delays, isolates quality variables, and guarantees that our bulk pricing structure remains highly competitive globally.
Our manufacturing processes are certified to meet international environmental, professional safety, and structural quality criteria.
Fully compliant with ISO9001-2015 standards, ensuring that every design iteration, raw material run, and precision machining cycle is tracked and recorded for full quality traceability.
Certified under ISO14001-2015. We utilize lead-free and low-lead brass alloys, energy-efficient induction forging furnaces, and closed-loop water treatment facilities to minimize ecological impact.
Validated by ISO45001-2018. We provide our staff with a secure environment, utilizing robotic automation for casting and hot forging to keep safety standards high.
| Alloy Designation | Cu % | Pb % | Zn % | Primary Application / Market Compliance |
|---|---|---|---|---|
| HPb59-1 (CW617N equivalent) | 57.0 - 59.0% | 1.6 - 2.5% | Balance | Standard heating loops, non-potable HVAC manifolds, gas fittings. (European Standards) |
| DZR Brass (CW602N) | 61.0 - 63.0% | 1.0 - 2.8% | Balance | Dezincification resistant. Excellent performance in aggressive water regions. |
| C37700 / C46400 (Lead-Free Option) | > 60.0% | < 0.25% | Balance | Potable drinking water configurations. Compliant with North American NSF/ANSI 372 standards. |
Culture: Struggle, Enterprising, Pragmatic, Innovative
Tenet: Customer first, Quality based
Quality Policy: Fine work, no leakage
Our quality pledge, "Fine work, no leakage," is implemented across all production lines. Every single component leaves the facility only after passing multi-stage pneumatic and hydrostatic seal tests. We strive to align the long-term viability of the enterprise with the welfare and happiness of our team, which directly translates into dedicated craftsmanship, reliable lead times, and stable product quality for our clients.
Discover our specialized components, engineered for modern, highly efficient underfloor heating, HVAC loops, and domestic water installations.
Serves as the primary barrier in domestic water sanitization systems. This inline unit effectively filters out up to 98% of particulates and debris, protecting downstream plumbing and valving components.
Technical Blueprint
Specifically engineered to manage water flows within residential boilers. Employs a highly polished brass spherical spool mechanism to ensure smooth actuation under temperature fluctuations.
Technical Blueprint
Automatically purges accumulated air pockets from heat pump loops, boiler lines, and air-source water heaters, maintaining thermal exchange efficiency and preventing system cavitation.
Technical Blueprint
Precisely modulates flow rates to blend hot supply water and cold return lines. This maintains a steady, safe operating temperature inside radiant heating sub-loops.
Technical Blueprint
Bridges the gap between mechanical distribution manifolds and digital automated controls. Integrates with thermal actuators to adjust room temperatures in real time.
Technical Blueprint
A multi-functional brass control valve that purges pipeline impurities, regulates manifold input flow rates, and monitors local pressure and temperature differentials.
Technical Blueprint
Engineered for underfloor heating configurations. The heavy-duty forged brass manifold body distributes primary fluid lines out to individual zone circuits.
Technical BlueprintExplore our main product categories, optimized for international distribution networks.
Combines a quarter-turn shut-off ball valve with a built-in stainless steel mesh strainer. The integrated design reduces space requirements and leak paths in complex piping layouts.
Designed for precise room-by-room thermal balancing. Durable internal sealing prevents sticking, even when left unused over the summer months.
An essential system component that blends hot supply and cooler return water, preventing thermal stress damage in modern subfloor piping installations.
Constructed from high-grade forged brass to withstand consistent pressure and temperature cycling. Features balance valves on each loop for customized fluid distribution.
A rugged outdoor faucet engineered for commercial, residential, and agricultural washdown applications. Features heavy-duty cast construction for reliable outdoor performance.
Engineered for minimal pressure drop under full-flow configurations. Ideal for isolation services where rapid operational shut-offs are not required.
High-precision brass connection fittings designed to connect utility metering equipment to municipal mainlines, maintaining thread accuracy and alignment.
Precision-machined brass hose barbs and compression fittings designed to comply with North American thread pitches, securing flexible piping lines.
When reviewing export quotes for brass valve series, assessing quality goes beyond comparing baseline prices. To secure system reliability, procurement officers should evaluate several key technical factors:
Forged brass valve bodies feature higher density and structural uniformity than cast alternatives. This virtually eliminates structural porosity issues and micro-fissures, which can lead to high-pressure leaks over years of operation.
Accurate thread profiles (compliant with standards like NPT, BSPT, or ISO 228-1) prevent thread galling during installation and maintain tight seals, reducing the rely on excessive thread sealants.
Different materials suit different operational temperatures and media. PTFE and Teflon seats offer excellent thermal resistance, while EPDM seals provide long-term elasticity in heating loops.
Find answers to common technical, logistics, and customization questions about our valve series.
