Yongda Yongda
Whitepaper & Global Sourcing Guide

Pump Group and Other Pricelist & Exporter

High-End Brass Manifolds, Fluid Control Systems & Smart Thermostat Solutions

Hydronic & Mechanical Fluid Systems - Hot Selection

Explore our highly specified mechanical line, covering hydronic distribution modules, brass valves, and high-precision temperature control systems designed for durability and low heat-loss performance.

Hydraulic Water Pressure Separator

Best Hydraulic Water Pressure Separator For Underfloor Heating Companies, Service

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Programmable Fan Coil Thermostat

Buy Display Touch Key Programmable Fan Coil Thermostat Manufacturer, Manufacturers

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Brass Garden Hose Fittings

ODM American Brass Garden Hose Fittings Factory, Companies

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Floor Heat Pipe Tube

High-Quality Hot Water Floor Heat Pipe Tube for Home Heating Floor Pricelist, Companies

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Brass Forged Manual Ball Valve

Best Brass Forged Manual Female By Male Thread Ball Valve Manufacturer, Factories

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Brass Gas Ball Valves

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Brass Female Elbow Connector

China Brass Female Elbow Connector for Sliding Pex Pipe Fitting Quotes, Service

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Anti-Corrosion Brass Hose Tap Valve

High-Quality High Quality Anti-Corrosion External Thread Hose Tap Brass Safety Water Stop Valves Quotes, Product

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Chapter 1

Industrial Whitepaper: The Strategic Role of Pump Groups & Fluid Distribution Systems

In modern commercial and residential hydronic heating systems, the coordination between primary heat generators (such as gas boilers, air-to-water heat pumps, or biomass systems) and secondary heat emitters (such as underfloor heating pipes and fan coil units) determines overall thermal efficiency. A pump group functions as the structural heart of this distribution framework, regulating fluid velocity, flow volumes, and temperature adjustments to maximize energy utilization.

As the European Union’s Energy Performance of Buildings Directive (EPBD) and North American net-zero mandates reshape mechanical designs, the demand for precision brass manifold networks, thermal actuators, and pressure-compensating bypass modules has reached unprecedented levels. Modern installers require modular, pre-assembled pump groups and manifold stations that reduce on-site labor and eliminate hydraulic imbalances.

Hydronic Separation

Eliminating velocity conflicts between the primary production circuit and secondary distribution zones using advanced hydraulic separators. This keeps system pressure drops linear.

Thermostatic Precision

Integrating smart motorized valves and mixing shunts to maintain stable design supply water temperatures, protecting radiant underfloor heating pipes from thermal shock.

Environmental Sustainability

Applying lead-free brass formulations and corrosion-resistant plating (nickel-plated surfaces) to guarantee compliance with international potable water guidelines and industrial standards.

1996
Founded In
45,000+
Factory Area (Square Meters)
600+
Advanced Production & Testing Equipment
20+
Global Export Destinations
Chapter 2

Precision Manufacturing & Chinese Factory Efficiency in Yuhuan

Located in Yuhuan, Zhejiang—widely recognized as the "China Valve Capital"—Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) leverages a complete regional ecosystem. This industrial cluster facilitates highly optimized lead times, rapid access to premium brass alloys, and specialized tooling networks that keep capital and operating expenditures low for overseas buyers.

Operating a state-of-the-art facility spanning 45,000 square meters (with an actual usable floor space reaching 80,000 square meters), the factory maintains over 600 sets of advanced manufacturing systems. This machinery pool features more than 80 sets of special machine tools, multi-axis vertical forging presses, and automated CNC finishing lines. Having direct oversight over the design, hot forging, mechanical machining, surface treatment, and final performance testing cycles allows for absolute consistency across large production runs.

Strict Quality Assurance (EEAT Integrity): Every brass valve, manifold, and dynamic mixing shunt undergoes comprehensive hydrostatic pressure and tightness tests. Our production runs comply with ISO9001-2015 Quality Management, ISO14001-2015 Environmental Management, and ISO45001-2018 Occupational Health and Safety management systems. This guarantees compliance with global requirements in North America, Western Europe, and Northern Europe.

Yuhuan Yongda Fluid Control Plant Area
Product Lineup

Energy Distribution System Solutions

A complete breakdown of our system components developed under the Cokaren and Yongda brands to maintain constant thermodynamic flow and safety in HVAC applications.

Y9021 Water Filter

Y9021 Water Filter

The first line of defense in domestic water sanitation, can filter 98% of impurities in the pipeline to protect downstream pump systems.

Boiler Angle Valve Y5001/Y5002

Boiler Angle Valve Y5001/Y5002

Used to control the inflow and outflow of cold water and hot water in the boiler, featuring a heavy-duty spherical spool.

Y9070 Venting Valve

Y9070 Venting Valve

Used to discharge excess air in air source water heaters and hydronic loops to ensure stable operations and prevent cavitation.

Y5020 Mixing Shunt

Y5020 Mixing Shunt

Designed to blend high-temperature boiler supply with return cooling water, stabilizing temperature and protecting pipes.

Y9031 Smart Thermostat

Y9031 Smart Thermostat

Combines all heating equipment interfaces to adjust real-time zone temperature via precise microchip calculations.

Y2010/Y6012 HVAC Valve

Y2010/Y6012 HVAC Valve

Engineered to filter and discharge impurities in pipelines, control back-end manifold switches, and monitor temperatures/pressures.

Y1001 Manifold

Y1001 Manifold

Distributes primary water flow across multiple zones. Integrates flow meters, balancing valves, and actuator adapters.

Chapter 3

Navigating Sourcing Protocols & Pricelist Architectures

Sourcing high-performance hydronic hardware requires a clear understanding of the pricing models applied by primary exporters. When procuring pump groups and related brass components, mechanical engineers and procurement departments must analyze cost structures through the lens of Total Cost of Ownership (TCO). A lower initial price per unit can lead to high operating costs if it results in leaks, system failures, or non-compliance penalties.

Our export pricelist structures classify products into three categories based on customization, manufacturing complexity, and testing compliance:

Standard Off-the-Shelf Packages

Highly competitive pricing for volume purchases. These include standard brass thread fittings, hose taps, and standard ball valves that conform to European dimensions (G threads) or American standards (NPT threads).

Engineered OEM/ODM Assemblies

Priced based on specific configurations, raw material weight fluctuations, and customer branding. Includes customized mixing manifolds, specialized air bleeder manifolds, and customized hydraulic separators.

High-Specification Smart Integration

Incorporates electronic controls, display touch key programmable fan coil thermostats, and electro-thermal actuators. Pricing reflects advanced circuit testing, assembly calibration, and quality verification processes.

Raw Material Integrity: We strictly source CW617N, HPb59-1, and DZR (Dezincification Resistant) brass alloys. These materials maintain mechanical integrity under fluctuating heat conditions and prevent stress corrosion cracking. Consequently, procurement departments benefit from longer product life cycles, minimizing warranty claims and downstream system failures.

Corporate Vision

Brand Promise: "Keep Flowing, Keep Warming"

Cokaren, the specialized brand launched by Yuhuan Yongda Fluid Control Co., Ltd., focuses on delivering refined appearance and premium quality to the global water supply, heating, and cooling markets.

Our core operating philosophy rests on four pillars: Struggle, Enterprising, Pragmatic, and Innovative. By prioritizing customer requirements and establishing zero-leakage policies ("Fine work, no leakage"), the Cokaren brand aims to deliver reliable warmth and safety to homes and commercial spaces globally.

We work to enhance our design, forging, and electronic assembly capabilities to ensure alignment between business growth, environmental sustainability, and employee welfare.

Cokaren Brand Vision and Engineering Team
Knowledge Base

Technical Q&A: Fluid Dynamics & Procurement

Crucial insights for mechanical contractors, OEM clients, and wholesale distributors seeking to optimize system design and procurement workflows.

What is the function of a hydraulic separator in underfloor heating pump groups?
A hydraulic separator decouples the flow rate in the primary loop (heat source side) from the secondary loop (heat distribution zones). This decoupling prevents pump conflicts, maintains linear flow rates across zones, and helps remove micro-bubbles and dirt particles from the circulating water.
How does Yuhuan Yongda prevent Stress Corrosion Cracking (SCC) in brass valves?
All our brass components undergo thermal stress relief annealing after the hot forging process. This step relieves the internal tension generated during extrusion and pressing, reducing the vulnerability of brass to stress corrosion cracking under aggressive water chemistries.
Can you support low-lead or lead-free requirements for North American and European markets?
Yes, we manufacture valves and fittings using lead-free brass formulations (such as C37700 or CW602N DZR brass) to comply with NSF/ANSI 61 and NSF/ANSI 372 drinking water safety standards.
What are the primary parameters of the mixing shunt (e.g., Y5020)?
Our mixing shunts allow precise adjustment of the supply temperature range, typically from 35°C to 65°C. This makes them ideal for systems that pair high-temperature radiators with low-temperature underfloor heating zones.

Fluid Connections & HVAC Control Products

Explore our line of heavy-duty brass connections, pe-pipe fittings, differential pressure bypass valves, and air vent components.

Cheap Brass Fittings

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China Thermal Actuator

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OEM Differential Pressure Bypass Air Vent Valve

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Auto Exhaust Bleeder Valve

Cheap Auto Exhaust Air Release Bleeder Boiler Vent Valve For Most Heating System Manufacturers, Company

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Brass Garden Hose Barb Fittings

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Brass Angle Boiler Valve

High-Quality BSP Thread Connection Forged Valves Brass Angle Boiler Valve Company, Service

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Two-Way Angle Valve

High-Quality 90 Degree Brass Forged Polishing Two-Way Cold Water Angle Valve Exporter, Products

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HVAC Fan Coil Electric Motorized Control Valve

High-Quality HVAC Fan Coil Electric Motorized Control Valve Factory, Products

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Factory Profile

Industrial Competence & Certification Details

Precision machining floor of Yongda Fluid Control

Yuhuan Yongda Fluid Control Co., Ltd. has developed production lines for mid-to-high grade HVAC components. We have served markets across North America and Europe, meeting environmental and performance requirements since 1996.

Our factories feature precision testing equipment, including spectrum metal analyzers to verify alloy compositions, pressure cycle testers to confirm longevity, and profile projectors for thread compliance audits.

We work to support sustainable development by seeking the agreement between corporate growth, technological innovation, and environmental responsibility.

Product quality control section and testing bench

Environmental & Management Standards

Through our quality-focused approach, we maintain key management system certifications:

  • ISO9001-2015 Quality Management System Certification
  • ISO14001-2015 Environmental Management System Certification
  • ISO45001-2018 Occupational Health and Safety Management System Certification

These certifications ensure our manufacturing practices remain clean, safe, and aligned with global standards.

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