Yongda
Yongda
Founded in 1996, Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) is strategically located in Yuhuan, Zhejiang, globally recognized as the "China Valve Capital." As a pioneer in the plumbing and HVAC sector, we integrate state-of-the-art product design, engineering, rigorous performance testing, and distribution systems across the Americas, Europe, and the Middle East.
Our comprehensive production system specializes in three high-precision categories: brass valves, precision fittings, and advanced HVAC hardware. Operating in highly regulated markets, we position our manufacturing output in the premium-grade segment. This ensures that every double-port angle stop valve, thermostatic radiator regulator, and manifold assembly exceeds modern mechanical expectations.
Cokaren, the premium brand of Yongda Fluid Control, represents our commitment to refined surface engineering, tight dimensional tolerances, and structural longevity. Guided by the brand promise "keep flowing, keep warming," Cokaren engineers residential plumbing valves, water meters, and underfloor mixing shunts designed for seamless operational lifetimes.
Our operating model centers on four pillars: Struggle, Enterprising, Pragmatic, and Innovative. Customer-centric delivery underpins all development, while our strict quality policy dictates: "Fine work, no leakage." Every angle valve undergoes 100% pneumatic sealing checks and hydrodynamic pressure testing before packaging.
Our commitment extends beyond engineering metrics. We seek to align enterprise advancement with employee welfare, ensuring that clean, sustainable, and safe manufacturing methods foster a supportive working environment. This approach translates directly into reliable product performance for plumbing systems worldwide.
How our manufacturing infrastructure minimizes cost fluctuations and guarantees uninterrupted supply flows for high-volume distributors.
With an actual usable production floor area of over 80,000 square meters, our facility operates more than 600 sets of production and quality-testing hardware. This includes over 80 sets of specialized CNC machine tools configured to machine complex internal valve profiles. This precision ensures uniform flow characteristics and low pressure drops across all plumbing assemblies.
By managing raw material casting, hot brass forging, precision CNC threading, surface finishing, and quality control on-site, we reduce reliance on external suppliers. This integration insulates our production lines from raw material delivery delays, enabling predictable lead times even during volatile market conditions.
Engineered solutions for residential hot-water loops, radiant floor heating manifolds, and potable water distribution networks.
The first line of defense in domestic water sanitation, engineered to capture 98% of particulates and scale within pipelines.
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Designed for isolating cold and hot supply lines, featuring an optimized spherical brass spool for positive shutoff.
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Automatically purges trapped air pockets from HVAC systems and water heaters, preventing localized heat locks.
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Blends return fluid with high-temperature inlet water to protect structural PEX tubes and regulate floor temperatures.
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Provides centralized control interface to modulate valve actuators, optimizing thermal delivery and energy output.
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Multi-functional shutoff with integrated mesh screens to filter particulates and ports to measure pressure drops.
Technical ParametersFor plumbing valves, compliance is critical. We manufacture our valves from high-grade brass formulations, including HPb59-1, CW617N, and lead-free alloy variants. This compliance meets strict low-lead criteria in jurisdictions like California (AB1953) and the broader North American market.
Our quality management systems are certified under:
This systematic oversight ensures that our products withstand rigorous pressure testing. For example, our 90-degree angle stop valves are pressure-tested up to 1.6 MPa, and our thermostatic radiator valves operate reliably under maximum temperatures of 120°C.
Features an integrated stainless steel mesh filter that captures line scale and particulate debris directly before fluid enters sensitive metering elements.
Provides precise throttling control for radiator loops, allowing manual adjustment of water volume to balance temperature differences.
Maintains consistent outlet temperatures in radiant floor manifolds by mixing hot boiler supply water with cooler loop return water.
Distributes heating loops across zones. Features flow meters and dynamic balancing valves for zoning control in commercial and residential HVAC projects.
Standard engineering parameters utilized across our brass manufacturing lines. Custom modifications are available via OEM/ODM partnerships.
| Valve Sub-category | Primary Material Grades | Size Range Available | Nominal Pressure Rating | Primary Seals & Seats |
|---|---|---|---|---|
| Angle Stop Valves (90°) | HPb59-1, CW617N, C37700 | 3/8" - 3/4" (G/NPT/Compression) | PN10 / PN16 (150-230 PSI) | PTFE / EPDM Double O-Ring |
| Thermostatic Radiator Valves | CW617N Nickel Plated | DN15 (1/2") - DN25 (1") | PN10 (145 PSI) | EPDM Seat with SS304 Spring |
| Manifold Assemblies | HPb58-3, CW614N Brass Bar | 1" Main Run (2 to 12 Ports) | PN10 | Vitonic & NBR Seals |
| Y-Strainers & Filters | DZR Lead-Free Brass | 1/2" - 2" Threaded | PN20 | SS304 Mesh (80 Mesh Standard) |
Answers to technical and logistical questions commonly raised by procurement managers, project specifiers, and distributors.
