Yongda
Yongda
Engineered for extreme durability, precise isolation, and seamless installation across global piping systems.
Achieving Zero-Leakage Performance in Demanding Industrial and Commercial Heating Distribution Environments.
Isolation valves represent the backbone of system security. Unlike standard throttling components, a gate valve is engineered to provide a fully unobstructed flow channel in the open state, minimizing pressure drop, while delivering a hermetic seal upon closure. By utilizing premium-grade forged brass alloys, our gate valves prevent cross-contamination, cavitation, and thermal degradation in critical infrastructure applications.
Global infrastructure updates require strict adherence to energy-saving goals. System breakdowns due to micro-leakages in massive distribution manifolds lead to severe structural dampness, efficiency drops, and costly shutdowns. The integration of robust gate isolation protocols prevents local maintenance issues from escalating into plant-wide mechanical failures.
Contemporary mechanical planning demands environmentally friendly alloys. By shifting from standard leaded brass to eco-friendly, low-lead and lead-free compositions, our products actively support compliant water delivery designs, meeting strict European standards and North American potable water regulations (such as NSF/ANSI 61 and Safe Drinking Water Act guidelines).
Leveraging decades of advanced engineering to deliver certified fluid control components worldwide.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was founded in 1996, and is strategically situated in "China's valve capital" – Yuhuan, Zhejiang. As a premier, specialized plumbing valve enterprise, we focus dynamically on integrating research, mechanical design, prototype development, advanced testing, and mass production sales.
Our core product portfolio features three distinct classes: high-grade brass valves, high-tolerance plumbing fittings, and advanced HVAC distribution systems. Positioned firmly within the middle and high-grade segments, we highlight the vital advantages of ecological sustainability, environmental protection, and long-term durability. These core characteristics make us a favored strategic partner for engineering consumers across North America, Europe, and global industrial markets.
As our newly launched strategic brand, Cokaren is fully committed to developing fluid control products with a highly refined industrial appearance and superior performance tolerances to guarantee perfect operational safety and support to our clients.
Cokaren's core promise, "Keep Flowing, Keep Warming", translates directly into our production quality. By combining advanced materials science with precise engineering standards, we ensure that every water system accessory, thermostatic block, and distribution manifold creates a safe, reliable, and energy-efficient environment in commercial and residential properties alike.
Operating robust machinery and testing structures to support flawless delivery of global orders.
Our expansive industrial complex features over 45,000 square meters of footprint, extending to over 80,000 square meters of actual operational, manufacturing, and warehouse floor area. This ensures highly efficient material handling and flow across our production lines.
Equipped with more than 600 sets of advanced manufacturing and testing devices, including over 80 specialized multi-axis CNC machine tools, we execute ultra-precise machining, achieving sub-millimeter tolerances for all isolation wedges and sealing surfaces.
Aligned with our core manufacturing policy of "Fine Work, No Leakage," every single assembly step incorporates strict quality checks to verify the zero-leakage capability of our double-seal isolation designs.
How our integrated HVAC valves, manifolds, and balancing systems work together to optimize regional thermodynamic performance.
Our thermodynamic system layouts show how specialized valves, air vents, and manifolds optimize boiler systems, radiant heating, and domestic water pipelines. Review the schematic below:
The first line of defense in domestic water sanitation, filtering 98% of physical impurities and scale in the pipeline to protect downstream instrumentation.
Used to control cold and hot water inflow/outflow in boilers, using a spherical spool system for reliable shutoff under high-temperature loads.
Discharges excess air from heat-source systems, preventing lock-ups and ensuring stable operation in closed hydraulic loops.
Mixes hot and cold supply lines, stabilizing delivery temperatures, preventing pipe stress, and enhancing energy efficiency.
Coordinates zone heating demands and balances valve positions to regulate zone temperatures dynamically.
Combines filtration and venting, allowing users to isolate flow, monitor system health, and measure line temperature and pressure.
Distributes fluid streams across multi-zone networks, allowing individual zones to be shut off for maintenance without affecting the entire system.
Verified compliance systems confirming our capability to meet strict global safety standards.
This certifies that our entire design-to-production workflow is managed under a standardized quality management system, ensuring consistent valve performance across all manufacturing batches.
Validates our adherence to strict environmental standards. By optimizing material yield, collecting scrap brass, and reducing emissions, we maintain clean and sustainable operations.
Validates our commitment to worker safety, maintaining a highly secure, clean, and optimized industrial workspace for our 600+ factory employees.
To eliminate casting weaknesses and prevent potential leakages under high-pressure conditions, our gate and ball valve bodies are manufactured using high-pressure forging machinery. We use advanced spectrometer analysis to check the chemical composition of each raw brass batch before extrusion. This strict approach ensures that we deliver robust products that comply with key plumbing, drinking water, and mechanical specifications worldwide.
Reviewing the technical designs, surface treatments, and configurations of our core products.
Designed with a dual-chamber mechanism, this valve combines reliable inline fluid isolation with a reusable mesh filter to capture particulate matter, protecting downstream controls.
Our manual and automated temperature control configurations provide precise flow adjustments in thermal loops, balancing system performance and reducing energy consumption.
Uses a bypass configuration to blend hot boiler outlet water with return flows, maintaining steady distribution temperatures to protect modern underfloor pipe systems.
A modular water-distribution manifold engineered to balance flow rates across multi-loop radiant heating systems, ensuring uniform thermal distribution.
Cokaren's premium garden and utility water faucet, forged from lead-free brass with a reinforced connection body for long-term outdoor performance.
Our classic isolation gate valve, featuring a heavy-duty brass wedge gate and dual-seal stuffing box to guarantee leak-free performance and ease of operation.
Constructed with high-accuracy connections, these tubes facilitate reliable water meter installation in residential and municipal water utility lines.
Forged fittings manufactured to meet exact thread specifications, ensuring safe, vibration-resistant connections to flexible lines.
Forged piston pressure reduction assemblies with three-way control valves.
Equipped with safety water-stop checks and corrosion-resistant surface coatings.
Designed for secure, leak-free connection to municipal utility connections.
High-durability inline valves designed for water distribution systems.
Engineered with safety relief thresholds to prevent over-pressurization.
Features a locking handle mechanism to prevent unauthorized water access.
Features standard ISO 228 parallel thread connections for easy integration.
Combines backflow prevention with an integrated strainer chamber.
Includes a robust brass mesh filter to prevent reverse-flow debris intrusion.
A robust check valve designed for straightforward, horizontal pipeline installation.
A pre-assembled pump station designed to mix manifold return water.
A compact thermostat station engineered to optimize low-temperature radiant floors.
Combines multi-zone thermal balancing with a safe over-temperature shutoff loop.
Maintains system pressure balance and provides automatic air release in manifold headers.
End-cap plug designed for bleed lines and manual air elimination.
Provides automatic venting of trapped gas pockets in continuous hydronic systems.
Designed for high-pressure venting in commercial heating systems.
Allows system draining and purging at the low points of manifold loops.
Heavy-duty connectors designed for quick installation on PE and PEX pipes.
Precision-cut threads designed for leak-free connections in commercial piping.
How Yuhuan Yongda is adapting to the next generation of industrial flow technologies.
Developing new lead-free, Dezincification Resistant (DZR) brass alloys to ensure long-term durability in regions with aggressive water chemistry.
Developing motorized balancing valves and smart pressure sensors that integrate with building management systems (BMS) for real-time tracking.
Expanding our robotic production cells and automatic assembly benches to maintain tight tolerances and ensure reliable, leak-free manufacturing.
Introducing solar energy systems across our 45,000-square-meter facility and upgrading scrap recovery systems to reduce carbon footprint.
A comparative technical analysis for mechanical engineers and system designers.
Technical Application Note:
For underfloor radiant systems, mixing loops, and utility intake stations, we recommend using gate valves for isolation tasks and ball valves for quick-turn supply lines. Integrating an inline strainer upstream of balancing loops helps capture scale and particulates, protecting the seals of your mixing systems.
Clear answers to common questions about brass alloy composition, pressure ratings, and sourcing logistics.
Ensuring flow safety, pressure stability, and thermal control throughout your piping networks.
