Yongda Yongda

High-Quality Check Flo Factory & Company

Precision Fluid Control Technology, OEM/ODM Brass Valves & Smart HVAC System Solutions

Premium Flow Control Systems

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Corporate Profile & High-End Heritage

Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was established in 1996. The enterprise is situated in Yuhuan, Zhejiang Province—widely recognized as the "Valves Capital of China." As a highly specialized manufacturing corporation, Yongda is built around a comprehensive operational framework integrating engineering design, prototype development, industrial production, and global sales channels.

The company’s portfolio is structurally categorized into three specialized sectors: Brass Valves, Precision Fittings, and HVAC Control Components. Yongda's hardware systems are strategically positioned within the medium-to-high-grade market segment, placing a major emphasis on environmental sustainability, material integrity, and long-term operating efficiency. These priorities make Yongda a reliable partner for distributors, engineering firms, and procurement networks across North America, Europe, and Asia.

Operating a manufacturing campus exceeding 45,000 square meters, with an actual usable floor area reaching 80,000 square meters, Yongda hosts more than 600 sets of advanced manufacturing and metrology systems, including 80+ specialized multi-axis machine tools. This capacity enables Yongda to satisfy the stringent requirements of diverse international standards and successfully export critical flow control solutions to more than 20 countries.

Yuhuan Yongda Manufacturing Facility
Cokaren Brand Flow Control

The Cokaren Brand Promise

Cokaren is the newly established premium brand of Yuhuan Yongda Fluid Control Co., Ltd. It represents the company's commitment to refining aesthetic industrial design and quality control in residential fluid mechanics. The brand promise—"Keep Flowing, Keep Warming"—guides Cokaren's development of water system accessories that improve domestic comfort, thermal efficiency, and environmental safety.

Cokaren focuses on smart hydronic balancing, high-efficiency mixing stations, and architectural integration. By combining modern aesthetics with technical functionality, Cokaren supports Yongda's growth as a major supplier of residential climate control technology.

1996
Founded In
80,000+
Total Area (SQM)
600+
Advanced Testing Systems
20+
Exported Nations

Corporate Principles & Quality Management

Yongda's corporate operations are structured around four primary values: Struggle, Enterprising, Pragmatic, and Innovative. With a customer-centric and quality-focused mission, the company implements a strict quality policy summarized as: "Fine work, no leakage."

Yongda maintains systematic management frameworks certified to global standards:
ISO9001:2015 Quality Management Systems
ISO14001:2015 Environmental Management Systems
ISO45001:2018 Occupational Health and Safety Systems

These certifications ensure that manufacturing processes, working conditions, and product performance comply with international industrial safety and quality requirements.

Corporate Quality Assurance

B2B Enterprise Procurement & Supply Chain Resilience

1. Regulatory Compliance

Global procurement teams must comply with regional environmental and mechanical standards, including CE marks for Europe and NSF/ANSI lead-free specifications for North American potable water systems. Yongda ensures all materials meet these requirements, easing the compliance burden for importing partners.

2. Material Traceability

Yongda maintains full metallurgical traceability, performing spectral analysis on incoming copper alloys. This ensures that every brass valve, fitting, or manifold meets specific tensile strength, dezincification resistance, and chemical composition standards.

3. Scaling Production

With an 80,000 square meter facility and over 600 pieces of equipment, Yongda supports high-volume manufacturing while maintaining stable lead times. This scale helps global distributors minimize stockouts and manage inventory fluctuations.

HVAC & Hydronic Energy Distribution Systems

Efficient hydronic management requires precise system design. Yongda designs and manufactures comprehensive fluid distribution systems that integrate filtration, pressure management, dynamic mixing, and zonal distribution. These components help maintain thermal efficiency and reduce energy consumption in residential and commercial buildings.

Energy Distribution System

System integration illustrating filtration, thermal regulation, and flow distribution pathways.

Energy Distribution System Schematic Diagram
Y9021 Water Filter

Y9021 Water Filter

The first line of defense in domestic water sanitation, filtering up to 98% of particulate impurities.

Technical Details >
Boiler Angel Valve Y5001/Y5002

Boiler Angle Valve Y5001/Y5002

Controls hot and cold inlet/outlet flows with a low-torque spherical brass spool.

Technical Details >
Y9070 Venting Valve

Y9070 Venting Valve

Automatically discharges entrapped air bubbles from heat pumps and boilers to prevent air locks.

Technical Details >
Y5020 Mixing Shunt

Y5020 Mixing Shunt

Mixes return and supply water to stabilize delivery temperatures and protect underfloor pipe networks.

Technical Details >
Y9031 Smart Thermostat

Y9031 Smart Thermostat

Centralizes zone monitoring to adjust actuator valves based on demand parameters.

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Y2010/Y6012 HVAC Valve

Y2010/Y6012 HVAC Valve

Integrates filtration, isolation, and pressure monitoring in a compact manifold footprint.

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Y1001 Manifold

Y1001 Manifold

Distributes heating media to individual underfloor heating loops with precise balance adjusters.

Technical Details >

Technical Roadmap & Future Outlook

To support transition toward high-efficiency building designs, Yongda is focusing on three key areas in its product roadmap:

1. Smart Integration: We are incorporating digital actuators and sensors into our brass manifolds and valves. This enables real-time monitoring of flow rates and temperatures, allowing systems to integrate with smart building management platforms.

2. Advanced Lead-Free Alloys: In response to tightening global lead limits in drinking water regulations, Yongda is expanding the use of bismuth-based and silicon-based lead-free brass alloys, ensuring compliance with future environmental standards.

3. Advanced Automation: We are updating our Yuhuan factory with automated machining and testing systems. These upgrades improve manufacturing tolerances, lower product rejection rates, and increase output capacity.

Automated CNC Production Lines

Featured OEM/ODM Solutions

Ball Valve with Filter

Ball Valve with Filter

Integrates isolation and filtration into a single body, saving space and reducing installation points in plumbing setups.

Temperature Control Valve

Temperature Control Valve

Provides manual and automatic adjustment of thermal inputs to maintain target room temperatures.

Mixing Shunt

Mixing Shunt

Uses a mechanical thermostat to control hot water injection into underfloor heating loops.

Manifold

Hydronic Manifold

Distributes water flow evenly across multi-zone underfloor heating systems.

Horse Bibcock

Horse Bibcock

A durable brass faucet designed for outdoor and utility washdowns, with threads for hose attachment.

Gate Valve

Industrial Gate Valve

Designed for full-flow isolation with minimal inline pressure drop, suitable for clean water networks.

Water Meter Tubes

Water Meter Tubes

Machined brass connection pipes that provide secure installations for municipal water meters.

American Brass Hose Barb Fittings

American Brass Hose Barb

Manufactured to American standard specifications to ensure secure connections in flexible piping networks.

Technical FAQ: Engineering & Procurement Insights

Q1: What raw brass alloys does Yuhuan Yongda utilize to maintain corrosion resistance in saline/acidic environments?
Yongda utilizes high-grade brass alloys, including CW617N, CW614N, and lead-free bismuth brass. For applications requiring high corrosion resistance, we use dezincification-resistant (DZR) brass alloys. These materials prevent the loss of zinc from the alloy structure, helping maintain mechanical integrity and preventing leaks in aggressive water conditions.
Q2: How does the Cokaren Y5020 Mixing Shunt optimize domestic underfloor heating efficiency?
The Y5020 Mixing Shunt stabilizes input temperatures by mixing hot supply water from the boiler or heat pump with cooler return water from the underfloor loops. This prevents thermal shock to concrete floor slabs and maintains uniform heat distribution. By keeping temperature fluctuations minimal, it helps lower the overall energy consumption of the heat source.
Q3: What testing protocols are implemented in the production facility to achieve the "no leakage" policy?
Yongda tests all valves and fittings for pressure integrity. Each piece is subjected to hydrostatic and pneumatic leak testing on the assembly line, checking seal performance at pressures exceeding normal operating limits. We also perform material fatigue test cycles and spectral analysis to verify alloy compositions match specification sheets.
Q4: Can Yuhuan Yongda manufacture products custom-tailored to unique OEM/ODM system designs?
Yes. Yongda operates an in-house engineering and R&D department that develops products based on client technical drawings or sample pieces. Our tooling workshop and 80+ multi-axis machine tools allow us to adjust thread profiles, seal materials, and body designs for custom OEM and ODM fluid control applications.

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