Yongda
Yongda
Precision-engineered brass valves designed to withstand demanding Japanese fluid systems, meeting stringent ISO and JIS design tolerances.
High-quality forged brass union angle ball valves. Ideal for compact residential and commercial water system connections in Japan, ensuring leak-free isolation.
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Custom engineered F-shaped brass angle type ball valves. Built for underfloor heating manifold integrations demanding fine distribution control.
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Heavy-duty brass gas ball valves featuring high-visibility yellow handles. Complies with industrial safety regulations for gas feed controls.
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Precision-machined double male threaded straight brass nipples. Designed for high pressure and temperature stability in complex pipe networks.
View DetailsJapan's HVAC (Heating, Ventilation, and Air Conditioning) market is undergoing a major evolution driven by two key trends: the strict decarbonization targets of the Green Growth Strategy and the accelerating retrofitting of aging infrastructure in commercial centers like Tokyo, Osaka, and Nagoya.
Commercial and industrial complexes are replacing old, inefficient steam and hydronic setups with modern, high-efficiency Variable Refrigerant Flow (VRF) and advanced hydronic balancing loops. Under Japanese Energy Conservation Laws (Sho-Ene-Ho), dynamic thermal management systems require high-reliability valves with minimum head loss, precise throttling capabilities, and absolute zero-leakage configurations.
Our brass valve manufacturing facilities leverage high-grade raw alloys (such as low-lead and dezincification-resistant brass) that match JIS standards. This ensures compatibility with the strict chemical compositions required for Japanese potable water systems and heavy hydronic setups.
Every HVAC ball valve undergoes 100% pneumatic testing under dual-pressure conditions before leaving our factory floor.
Engineered internal bores minimize turbulence, preventing cavitation and reducing pump power demands in long-run loops.
Adhering strictly to standard lead leaching regulations to ensure compliance with municipal drinking water standards.
To integrate seamlessly into Japanese district heating and cooling (DHC) lines, valve components must meet specific pressure, temperature, and material composition limits:
| Valve Type | Material Grade | Pressure Rating | Operating Temp Range | JIS / ISO Reference |
|---|---|---|---|---|
| Brass Ball Valves | CW617N / HPb59-1 (Low Lead) | PN25 - PN40 | -20°C to 120°C | JIS B2011 / ISO 228 |
| Manifold Control Valves | Dezincification Resistant (DZR) Brass | PN16 | -10°C to 95°C | JIS B2061 compliant |
| Automatic Balancing Valves | Forged Brass (CW602N) | PN20 | -15°C to 110°C | JIS B2002 / ISO 5211 |
| Actuators & Controls | UL94-V0 Thermoplastic Shell | N/A | 0°C to 60°C (Ambient) | CE / RoHS Certification |
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was founded in 1996 in Yuhuan, Zhejiang, widely recognized as the "Valve Capital of China". Over the last 28 years, our business has evolved into a leading global designer and manufacturer of high-precision brass valves, fittings, and complex HVAC products.
Spanning a modern production footprint of 45,000 square meters (with an actual usable floor space of over 80,000 square meters), our plant operates more than 600 sets of advanced manufacturing and testing equipment, including 80+ specialized multi-axis machine tools. This capability allows us to cater to highly demanding customized orders for residential, commercial, and industrial developers across 20+ countries, including the European Union, North America, and Japan.
Our premium retail and contract division, Cokaren, represents our commitment to refined aesthetics and long-term durability, delivering on the promise: "keep flowing, keep warming".
An efficient hydronic loop requires perfect coordination between filtration, diversion, and zoning. Our energy distribution components are trusted by HVAC installers worldwide:
The first line of defense in domestic water sanitation, removing up to 98% of line impurities.
Precise control of cold and hot water inlets, featuring low-torque spherical spools.
Ensures peak heat exchange efficiency by venting trapped air bubbles in real time.
Stabilizes temperatures across underfloor loops, protecting system pipes from thermal shock.
Integrates with multi-zone manifolds for high-efficiency climate scheduling.
In accordance with our strict manufacturing policy—"Fine work, no leakage"—our quality management systems are fully certified under the highest international standards:
Our state-of-the-art testing facility performs spectral raw material analysis, high-pressure pneumatic sealing tests, dimensional tolerance verifications, and stress corrosion tests to guarantee decades of reliable operations under harsh heating and cooling cycles.
Optimized sourcing routes, raw material scale, and advanced automation processes deliver unique value for Japanese HVAC partners.
Based in Yuhuan, the heart of China’s valve industry, we benefit from deep regional raw material supply chains, specialized heat-treating services, and skilled machining talent. This direct access significantly shortens production lead times for large custom orders.
High-volume automated production lines, multi-spindle machining centers, and automated assembly equipment run 24/7. This high utilization rate distributes overhead costs efficiently, enabling us to deliver premium products at competitive price points.
Our proximity to major deep-water ports (Ningbo and Shanghai) allows for rapid sea freight connection. Shipping transits to major Japanese hubs like Tokyo, Yokohama, Osaka, and Kobe typically take only 3 to 5 days, supporting Just-in-Time inventory models.
A comprehensive range of brass fittings, thermostats, actuator elements, and manifold accessories to cover new installations and facility retrofits.
Custom OEM angle valves engineered for precise control. Features thick brass walls to resist mechanical stress during installation.
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Specially designed F-shaped brass manifold angle valves, simplifying circuit isolation and balancing tasks.
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CE certified male straight union fittings. Delivers a durable, leak-free connection in high-pressure hydronic loops.
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Premium brass compression fittings optimized for direct installation onto standard metric copper tubes without welding.
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Weatherproof brass hose connectors. Precision thread designs prevent stripping during high-frequency connections.
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Sleek touchscreen programmable thermostats, ideal for modern office and hotel fan coil systems.
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Durable water heater safety and isolation angle valves with standard male connection profiles.
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Fast-acting thermostatic electric actuators. Engineered for silent, precise loop monitoring on floor manifolds.
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High-performance flow isolation stop valves, engineered to handle elevated line pressures with minimal wear.
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Heavy-duty domestic boiler angle valves, engineered to provide quick, reliable hot water isolate-and-drain functionality.
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Premium internal thread one-way check valves. Engineered to prevent damaging backflow in critical pump systems.
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High-strength forged CW617N brass elbows. Offers long-lasting joints for flexible multi-layer PEX plumbing networks.
View DetailsExplore our specialized sub-categories and custom configurations, designed to support varied commercial and industrial HVAC designs:
Key details on compliance, performance parameters, and logistics support when importing to Japan:
Yes. Our factories produce specific low-lead and lead-free alloy variations (such as CW617N, C46500, or equivalent low-lead bismuth/silicon brass options) that meet the lead leaching limits of 0.005 mg/L or less required by the Japanese Water Supply Act. Please specify your target alloy compositions during the RFQ process.
Standard sea freight shipments from Ningbo or Shanghai port to Tokyo, Yokohama, Nagoya, or Osaka take between 3 and 5 days. For custom OEM orders, production lead times average 25 to 35 days from sample verification, depending on casting complexity and batch size.
Yes, our R&D division has extensive experience configuring manifold loop pitches, pipe connectors, and thermostatic actuator threads to align with metric sizing, supporting straightforward integrations with domestic Japanese HVAC lines.
True to our policy, "Fine work, no leakage", every single valve undergoes high-pressure air sealing and low-pressure hydraulic testing. We also perform cycle-life tests, torque checks, and chemical verification of each raw material batch using optical emission spectrometers.