Yongda
Yongda
Founded in 1996 in the heart of "China's Valve Capital" – Yuhuan, Zhejiang, Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) has grown to become a benchmark manufacturer in the global valve industry. With a total facility footprint exceeding 45,000 square meters and an actual usable production area reaching 80,000 square meters, we integrate top-tier industrial design, cutting-edge technology R&D, robust manufacturing, and professional international trade services.
Our product catalog focuses on three main pillars: high-performance brass valves, industrial-grade pipe fittings, and smart HVAC control systems. Positioned firmly in the mid-to-high-end segment, we highlight eco-friendly materials and energy-efficient designs. Our systems and products are highly sought after by engineering firms and utility distributors across North America, Europe, and Asia.
A comprehensive look at fluid dynamics, structural metallurgy, and mechanical performance parameters.
We analyze downstream feedback loops using direct-acting diaphragms. Under high inlet fluctuations, our pressure reducing valves maintain a constant setpoint by balancing spring compression against fluid force.
Utilizing premium CW617N forged brass, we ensure maximum structural integrity and corrosion resistance. Our lead-free brass formulations meet the strict standards of European and North American municipal drinking water systems.
Internal geometry design is optimized to prevent localized vapor bubble collapse. This controls cavitation, limits vibration, and reduces pipe noise, extending the lifespan of municipal and industrial HVAC systems.
In high-flow municipal networks, ordinary valves suffer from pressure "droop" (outlet pressure drops as flow rate increases). Our piston and diaphragm design models leverage optimized flow coefficients (Cv) to minimize pressure droop, maintaining steady supply rates even under peak industrial demands.
As IoT infrastructure integrates with traditional heating and utility networks, we are leading the change from passive pressure control to active, digital fluid management. Our development team is working on smart, piezo-controlled pressure regulation modules that send real-time flow rate, pressure, and temperature data to building management software (BMS). Using low-power wireless protocols, these next-generation units will help operators run preventive maintenance diagnostics, detect remote leaks, and dynamically balance multi-zone underfloor heating arrays automatically.
Cokaren, our high-tier sister brand, is built on a simple brand promise: "Keep flowing, keep warming". The brand focuses on premium engineering design, precision tolerances, and refined finishes to bring industrial-grade dependability to residential and light commercial plumbing networks.
By using premium brass alloys and testing every single unit, Cokaren products are built to handle the mechanical demands of modern, pressurized utility lines. We aim to build systems that last, keeping home heating systems operating smoothly for decades.
Supported by our massive Yuhuan factory, Cokaren bridges the gap between raw manufacturing capacity and custom OEM/ODM designs. We help global clients quickly bring specialized products to market while meeting regional compliance standards.
Comprehensive residential and commercial hydronic and HVAC control ecosystems.
Our integrated energy distribution layouts show how balancing manifolds, smart thermostats, automatic mixing systems, and multi-stage filtration units work together. This complete setup helps control thermal output and water pressure in residential boilers and central heating systems, preventing system damage and reducing energy waste.
The first line of defense in domestic water sanitation, filtering 98% of line particles to protect components.
Controls flow rates in boiler inlet and outlet loops, featuring a low-friction spherical brass spool.
Automatically releases trapped air bubbles in system heat pumps to maintain steady flow pressure.
Mixes inlet hot and cold water streams to protect piping from thermal stress and control room temperatures.
Centralized interface that communicates with downstream manifolds to manage hydronic heat levels.
Integrated unit featuring debris straining, air venting, and analog line pressure gauges.
Distributes flow pathways evenly across underfloor zones to keep space heating consistent.
Culture: Struggle, Enterprising, Pragmatic, Innovative
Tenet: Customer First, Quality Based
Quality Policy: Fine Work, Zero Leakage
We work to strengthen our production systems and build dynamic teams, helping us align company growth with personal development and reliable community service. Our quality assurance process is built on strict testing standards, ensuring that every product performs reliably under real-world pressure.
The global fluid control supply chain demands rapid adaptation, shorter lead times, and stable pricing. Located in Yuhuan, Zhejiang, we leverage the region's complete industrial ecosystem to keep production running smoothly. From finding raw brass ingots to finished surface polishing and pressure testing, all manufacturing steps happen within a 15-kilometer radius.
Our facility houses over 600 production and testing units, including 80+ specialized CNC machining blocks. This machinery helps us handle large international orders while keeping dimensional tolerances within strict micro-ranges.
Responding to strict environmental rules in North America and Western Europe, we produce low-lead and lead-free DZR brass components. This helps clients satisfy local public health standards and safety codes.
Located close to the Ningbo-Zhoushan and Shanghai ports, we coordinate fast shipping routes, handle customs clearance quickly, and provide door-to-door tracking for global clients.
Quality and environmental responsibility are built into our manufacturing processes. We operate under recognized global standards to ensure consistent product performance and workplace safety:
Every product line undergoes structural integrity and seal tests to verify pressure ratings before shipment, ensuring consistent quality across every batch.
Explore our main product lines, including ball valves, mixing shunts, gate valves, and hose barbs.
One of the outstanding features is the integrated mesh filtration sleeve...
Manual Temperature Control and balancing for variable hydronic loops...
The thermostat directs flow dynamically based on inlet temperatures...
Underfloor distribution manifolds designed for easy zone installation...
Introducing Cokaren's premium series water taps...
Heavy duty brass wedge gate valves for isolating fluid lines...
Engineered connections for commercial or residential meter coupling...
High-Quality American Brass Hose Barb Fittings Exporter, Products...
Technical answers to common questions about selecting, installing, and maintaining pressure control components.
Pressure droop is the drop in downstream pressure that occurs as flow demands increase. It is caused by the relaxation of the control spring as the valve opens. To reduce droop, we engineer regulators with larger sensing diaphragms or use pilot-operated designs that balance internal forces more effectively.
CW617N brass is highly forgeable and offers excellent mechanical strength. Hot forging eliminates the micro-porosity common in sand-cast parts, which helps prevent structural failures and micro-leaks under high pressure.
When zone valves close, system flow rates drop, which can spike line pressure. A bypass loop routes excess water back to the return line, keeping pressure stable, protecting the pump from overload, and preventing flow noise.
For European markets, CE marking and EN-standard compliance are standard. For North American plumbing systems, components must meet low-lead drinking water requirements and certifications like ASTM F1807 for PEX connections.
