Yongda
Yongda
Modern infrastructure relies on precision engineering to guarantee continuous, zero-leak fluid dynamics under extreme thermal and barometric pressures.
Worldwide mechanical, electrical, and plumbing (MEP) sectors are actively shifting from legacy soldering processes to dry-press mechanical piping connections. In global logistics, commercial construction, and district heating plants, the demand for high-reliability brass press valves has grown exponentially. System designers prioritize structural robustness, zinc corrosion resistance (DZR), and swift installation cycles to reduce costly manual labor.
Yuhuan Yongda Fluid Control Co., Ltd. leads this industrial development. Located in Yuhuan, Zhejiang—the recognized center of China's valve manufacturing industry—our facilities engineer next-generation brass press valves and manifolds designed for severe operations. With over 600 production systems handling domestic water distributions and complex underfloor heating arrangements, we supply major distributors in North America, Western Europe, and across the globe.
Originating in 1996 as Yuhuan Yongda Plumbing Co., Ltd., the enterprise underwent a strategic restructuring to emerge as Yuhuan Yongda Fluid Control Co., Ltd. The business specializes in product design, fluid modeling, physical forging, and exhaustive cycle testing. Our product line is divided into three major categories: heavy-duty brass valves, structural pipe fittings, and HVAC system parts.
Our premium brand, Cokaren, represents our design philosophy and brand promise: "keep flowing, keep warming". The Cokaren line integrates advanced engineering with refined surface finishes to ensure reliable service throughout their operating life. By emphasizing premium performance and low-lead alloy metallurgy, Cokaren has become a reliable choice for residential and commercial heating installations.
Our operational philosophy is built on these principles:
Utilizing high-grade CW617N, CW602N (Dezincification Resistant), and C46500 low-lead brass to prevent leaching, corrosion, and structural degradation in demanding potable water and heating environments.
Integrated double EPDM and FKM O-rings feature a distinct "leak-before-press" leak path. Unpressed connections are easily identified during initial hydrostatic testing, preventing long-term failures.
Precision hot-forging eliminates internal porosity, followed by multi-axis CNC machining that holds critical dimensions to within microns, ensuring compatibility with standard pressing tools.
Our metallurgical research facility continuously monitors zinc dissolution patterns to improve the lifetime of brass press valves exposed to varying pH values. Cokaren fittings use strict lead-free brass formulations that meet EPA regulations in the United States and the European Drinking Water Directive. Our engineering team conducts finite element analysis (FEA) on valve bodies to guarantee durability against thermal expansion cycles and high-pressure fluid hammer occurrences.
We provide comprehensive piping system solutions for commercial heating and domestic water infrastructure.
Our energy distribution architecture connects heat sources (boilers, air-source heat pumps) to end-user heating loops through smart radiant manifolds. Yongda's mixing shunts, venting valves, and balance assemblies operate together to optimize thermal performance and minimize pressure drops in residential and commercial spaces.
Serving as the primary defense in municipal water inputs, this system traps up to 98% of particulate impurities, protecting downstream press valves and delicate control manifolds.
Forged with a high-strength spherical spool to regulate high-temperature water entering and leaving heating boilers, preventing safety hazards from thermal scaling.
Equipped with micro-metering valves and dynamic actuators to manage flow across multiple rooms, ensuring stable room temperatures throughout the building.
Integrating mechanical bypass systems with automatic venting systems (like our Y9070 Venting Valve) ensures water systems run quietly by venting trapped air. When combined with our Y9031 Smart Room Thermostat, the system adjusts hot water flow based on environmental conditions. This automated regulation saves energy and reduces pump wear in closed-loop systems.
Operating a global supply chain requires strict compliance with international standards. Yongda has established a comprehensive quality management system that ensures traceability, material verification, and physical performance testing from raw materials to final delivery.
Fully compliant with ISO 9001:2015 (Quality), ISO 14001:2015 (Environmental Management), and ISO 45001:2018 (Occupational Health and Safety).
Certified for distribution within the European Economic Area, meeting structural safety, pressure ratings, and environmental compliance standards.
Every forging lot undergoes spectral chemical analysis and pressure testing to ensure consistent quality and trace material provenance.
