Yongda
Yongda
Explore our premium custom check valves, gate valves, and multi-layer piping solutions engineered for high performance.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) is located in the recognized "China Valve Capital" - Yuhuan, Zhejiang. As a premier manufacturer of residential and industrial flow control accessories, we specialize in high-end product engineering, advanced mechanical design, rapid prototyping, and automated factory mass production.
Our core solutions span three high-performing divisions: brass valves, pipe fittings, and smart HVAC control systems. With products targeted at premium global markets, we prioritize low-lead metallurgical integrity, environmental compliance, and structural longevity, earning the trust of institutional buyers across North America and Europe.
"Precision machining is the foundation of structural safety. Our zero-leakage target governs our full line, including high-tolerance foot check valves and custom manifolds."
Cokaren represents our company's commitment to high-aesthetic value, strict quality standards, and premium user experience. Operating under the brand promise of "keep flowing, keep warming", we develop intelligent and robust components designed to sustain home comfort and optimize commercial HVAC delivery.
By leveraging smart thermal technology and high-precision CNC manufacturing, Cokaren is executing an aggressive growth strategy to deliver dynamic, zero-maintenance flow controls for complex hydrological layouts.
A comprehensive analysis of hydraulic efficiency, material science, and safety design in water well, HVAC, and industrial pumping networks.
In municipal water networks, agriculture, and industrial HVAC loops, maintaining a solid column of fluid is essential to prevent pump dry-run failures. A Foot Check Valve acts as a specialized one-way valve installed at the base of a pump’s suction pipe. By keeping the intake line primed, it prevents backflow from returning to the source (such as a well or reservoir) when the pump cycle stops.
This design helps prevent water hammer—a catastrophic pressure surge that occurs when column separation collapses. Standard check valves can experience delayed closure, but a spring-loaded foot valve responds immediately, matching the pressure changes in the piping system.
Industrial applications demand strict adherence to metallurgic standards. Our ODM manufacturing processes use specialized brass alloys (including DZR - Dezincification Resistant Brass, CW617N, and Lead-Free Silicon Brass) to resist chemical degradation. When valves are deployed in potable water networks, maintaining low lead levels is a compliance requirement under NSF/ANSI 61 and RoHS regulations.
The primary concern for hydraulic system designers is the pressure loss (Head Loss) across intake valves. An unoptimized path forces the pump to work harder, reducing efficiency. Cokaren’s foot valves feature optimized hydrodynamic chambers that reduce turbulences. The spring tension is calibrated to open at low pressure differentials (less than 0.05 bar) while maintaining a tight seal upon closure.
From centralized heating grids to rural water extraction, see how our integrated valve assemblies fit into modern systems.
Integrated with our underfloor manifolds, air vents, and smart thermostatic mixing shunts to maintain balanced water temperatures and protect heat exchangers from pressure shocks.
Maintains sanitary water flow by preventing backward contamination into clean water tanks. Features NSF-certified brass bodies that prevent heavy metal leaching.
Engineered to handle harsh environments. Stainless steel mesh filtration keeps sand and silt out of downstream impellers, reducing pump wear.
Our facility holds ISO9001:2015 (Quality Management), ISO14001:2015 (Environmental Management), and ISO45001:2018 (Occupational Health & Safety) certifications. This dual focus on product quality and manufacturing safety guides every step of our process.
Every batch of ODM foot check valves undergoes raw material spectroscopy, 100% pneumatic sealing tests, and dimensional tolerance checks. This ensures that the components you receive perform reliably under pressure.
Explore our heating system components designed to manage water flow, temperature distribution, and air pressure control.
Our layout provides balanced distribution across multiple heating zones. It integrates underfloor heating pipes with thermostatic controls, high-pressure mixing shunts, and automatic air vents to optimize system efficiency.
The first line of defense in domestic water sanitation, filtering 98% of pipe impurities.
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Used to control boiler water flow. Built with a solid spherical spool for durability.
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Vents trapped air in air-source water heaters to ensure stable, noise-free operation.
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Stabilizes system temperatures by mixing hot and cold water to protect piping.
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Integrates with heating equipment to manage zone-by-zone room temperatures.
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Filters debris, controls manifolds, and monitors system temperature and pressure.
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High-integrity brass connectors built to handle constant thermal cycles.
Learn More →Premium OEM and ODM products designed for plumbing systems, HVAC, and industrial pipelines.
Combines isolation and filtration in a single brass body to save installation space.
Allows precise manual adjustment of water heating loops to balance room temperatures.
Keeps water delivery temperatures consistent, protecting PEX lines from overheating.
Ensures uniform flow distribution in floor heating networks.
Frost-resistant outdoor faucet, built with reliable Cokaren branding.
Engineered for high-volume piping lines, featuring a brass gate for reliable shut-off.
High-integrity brass pipes designed for residential water utility connections.
Precision-threaded barb adapters built to American plumbing dimensions.
Specific fittings and valves engineered for industrial piping, pressure relief, and water protection.
Forged piston valves built to control system pressure levels.
Corrosion-resistant water safety shutoff valves.
Robust outdoor faucet with integrated brass union.
Reliable manual water control valve for domestic plumbing lines.
Engineered flow-control valves for thermal expansion relief.
Sanitary lockable faucet, plated for extra weathering protection.
High-strength brass body designed to control fluid flows in domestic pipelines.
Fitted with a brass T-strainer for filtration and backflow prevention.
Traps pipe debris to protect sensitive pressure regulators and meters.
Fitted with a built-in brass mesh filter for intake pipe safety.
Features an internal manual thread for secure, direct connection.
Integrated brass system built to regulate manifolds.
Controls loop flow to prevent thermal imbalance across structures.
Maintains stable heating temperatures throughout underfloor piping.
Includes an automatic air vent to prevent airlock inside manifolds.
Reliable sealing plug designed for manifold service ports.
Releases trapped pockets of gas in real time to optimize flow distribution.
Releases pressure built up from heating water gases.
Manages water purging and air release at manifold ends.
Designed for quick, secure connection to polyethylenes (PE).
NPT/BSP threaded connections for residential and commercial plumbing.
Machined for direct, leaks-free integration with various tube wall widths.
Technical answers to common questions about selecting and applying industrial check valves.
A broad selection of brass check valves, temperature controls, and piping systems for domestic and industrial installations.
