Yongda
Yongda
Explore our foundational range of brass valves, engineered for industrial, residential, and fluid management systems worldwide.
Founded in 1996 in Yuhuan, Zhejiang—widely recognized as the "China valve capital"—Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) has grown into an industry-leading manufacturer specializing in fluid control systems. We cover the entire pipeline value chain: product design, material formulation, structural development, automated manufacturing, and global sales.
Our product portfolio is built on three core segments: high-grade brass valves, custom pipeline fittings, and energy-efficient HVAC products. Positioned in the premium tier, our products are engineered to exceed global standards for environmental health, lead-free compliance, and mechanical durability, making us a preferred partner in North America, Europe, and Asia-Pacific.
Cokaren Brand Promise: "Keep flowing, keep warming". As our signature high-end line, Cokaren delivers refined appearance, tighter manufacturing tolerances, and long-term operating reliability to modern residential and commercial heating infrastructures.
Analyzing key industry challenges, quality expectations, and material standards across international commercial and industrial markets.
With regulations like NSF/ANSI 61 and Safe Drinking Water Act mandates in North America, and strict RoHS/REACH standards in Europe, procurement departments must secure valves made of lead-free brass (e.g., C37700 or CW617N). Eliminating heavy metal leaching while preserving machinability and corrosion resistance is a primary technical challenge.
For small ball valves integrated into complex industrial skids, underfloor manifolds, or HVAC boilers, dimensional stability is vital. Precision-cut threads (NPT, BSP, or G-threads) must conform to international standards (ISO 228-1 or ANSI B1.20.1) to guarantee zero-leak joints when combined with multi-layered pipes or metallic connection joints.
Valves are subjected to thermal shock, pressure spikes, and mechanical stress. Sourcing agents demand certified pressure ratings (PN16, PN25, or higher) and high-quality sealing elements—such as virgin or carbon-filled PTFE seats and EPDM/Viton O-rings—capable of maintaining bubble-tight seals through thousands of open-close operations.
How our component family works systematically to manage pressure, filter impurities, and regulate temperatures in thermal systems.
Modern HVAC and water systems demand seamless component integration. From central heat inputs to local distribution terminals, each valve must work in harmony. Our integrated system layout manages water purification, thermal regulation, air evacuation, and volumetric routing, protecting municipal systems and saving energy.
Custom designs for residential, commercial, and HVAC operations, providing targeted performance under varying conditions.
In low-temperature radiant systems, uneven loop lengths cause room-to-room temperature swings. Our brass distribution manifolds, lockshield radiator valves, and bypass balancing valves allow precise flow adjustments, keeping temperatures even across multi-zone installations.
Particulates, pipe rust, and sand degrade delicate downstream appliances. Incorporating ball valves with integrated filters or robust Y-strainers right at the main building inlet protects plumbing networks, retaining water sanitation without causing severe pressure drops.
Auxiliary boiler valves handle thermal expansions and high operating temperatures. Using angle check valves, automatic venting valves, and thermostat mixing shunts prevents backflow and thermal buildup, keeping hot water loops running safely.
Fluid dynamics is evolving rapidly, driven by automated building management systems, strict material safety rules, and carbon-reduction targets. Our engineering team is focusing on several key developmental areas:
1. Lead-Free Metallurgy: Investing in silicon-brass and bismuth-brass formulations that match the mechanical strength of traditional leaded brass while maintaining machinability and long-term corrosion resistance in aggressive water chemistries.
2. Smart System Integration: Designing motorized mini ball valves and manifolds with digital sensors. These provide real-time pressure, temperature, and leak diagnostics to building automation systems via Modbus or IoT protocols.
3. Advanced Surface Treatments: Implementing nickel-free electroplating and ultra-smooth internal profiles to minimize flow resistance, scaling, and heavy-metal release.
Our commitment to rigorous testing, environmental health, and workplace safety under recognized international standards.
Strict quality management system controlling manufacturing from raw brass rod inspection to final pneumatic pressure testing.
Environmental management system that minimizes factory waste, regulates emissions, and supports sustainable recycling practices.
Occupational health and safety guidelines safeguarding our workers on forging, assembly, and testing floors.
Quality Policy: "Fine work, no leakage." Every valve undergoes 100% pneumatic sealing tests before packaging, ensuring zero leaks and maintaining high reliability in domestic and industrial pipelines.
Expert insights on selecting, installing, and maintaining small brass ball valves.
Premium components designed for radiator loops, municipal metering, and secure pipe connections.
