Yongda
Yongda
Explore our latest high-performance thermal actuators and intelligent thermostats engineered for global hydronic and HVAC systems.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was founded in 1996, and is strategically situated in the "China Valve Capital" – Yuhuan, Zhejiang. As an industry-leading, professional plumbing and heating valve enterprise, we dedicate ourselves to the end-to-end scope of HVAC solutions, encompassing product design, advanced engineering, vertical manufacturing, and global sales networks.
Our catalog is specialized across three pillars: brass valves, precision fittings, and commercial-grade HVAC systems. Positioned in the middle and high-grade global markets, our products highlight eco-friendly raw materials, strict lead-free brass formulations, and zero-defect quality control. This commitment has positioned us as a preferred ODM/OEM manufacturer for tier-one brands across North America, the European Union, and the United Kingdom.
Operating a sprawling factory footprint of over 45,000 square meters (with actual usable built-up area reaching 80,000 square meters), we coordinate a highly advanced machinery park of over 600 production and inspection systems. This state-of-the-art infrastructure enables us to customize our valves, thermostats, and electrothermal actuators to the rigorous local standards of over 20 destination nations.
Decarbonization, regulatory updates, and building automation protocols drive the demand for smart temperature control solutions.
Modern radiant floor heating and cooling systems require dynamic balancing to achieve target energy efficiency classes. Electrothermal actuators play a critical role in controlling manifold loops based on real-time room thermal dynamics.
Smart thermostats have evolved from simple bi-metallic switches to intelligent automation nodes. By integrating Modbus, BACnet, and wireless Zigbee/Thread protocols, they feed data to Building Management Systems (BMS).
European ERP directives and North American ASHRAE standard 90.1 mandate zoning regulations. Our actuators are tested to meet the performance criteria required to lower overall household thermal consumption by up to 20%.
Tailoring hydronic thermal management systems to distinct regional engineering standards, climate zones, and local housing styles.
In German-speaking Europe, hydronic floor heating integrated with heat pumps represents the gold standard. Systems rely heavily on highly responsive, Normally Closed (NC) electrothermal actuators connected directly to a central brass manifold.
Our products support exact integration with standard manifold threads (M30x1.5), offering precise flow rate controls that match European energy-saving regulations (EnEV / GEG).
The US and Canadian markets lean heavily on forced-air zoning alongside residential hydronic loops. Thermostats require compatibility with 24VAC systems and integration with smart assistant applications (such as Apple Home, Google Home, and Alexa).
Our ODM programmable fan-coil and air conditioner thermostats are built with dual-frequency relay controls, ensuring seamless retrofits for traditional 24V C-wire systems.
District heating architectures in Central and Eastern Europe require robust radiator valves that can handle high pressure differentials and fluctuations in hot water chemistry.
Yongda's heavy forged brass radiator valves, combined with CE-certified electric thermal actuators, provide long-term sealing stability, preventing scale buildup and internal fluid bypass.
With rapid urbanization in the Asia-Pacific region, high-density residential towers utilize multi-zone air conditioning paired with localized floor heating. Controls must be aesthetically minimal, with ultra-thin profiles and smart mobile app controls.
Our LCD intelligent temperature controllers offer sleek flush-mount profiles, custom glass touch panels, and TUYA IoT integration to deliver modern lifestyle experiences.
Architecting the future of HVAC controls through silicon innovations, wireless topologies, and micro-actuation mechanics.
To overcome smart home fragmentation, our engineering team is actively porting Thread stack architectures into our upcoming smart thermostat lineup. This ensures direct IP-based connectivity, local mesh stability, and instant compatibility with Matter controllers without proprietary hubs.
Traditional thermal actuators operate on a fixed stroke based on paraffin wax melting profiles. Our next-generation smart actuators will incorporate micro-sensor feedback loops to automatically calibrate stroke and detect valve blockages, sending alerts via the controller network.
Leveraging temperature differentials within hot water pipes, our research division is prototyping thermovoltaic micro-generators. This system targets self-powered electronic radiator valves, eliminating the need to change batteries in extensive hydronic networks.
Located in Yuhuan, the capital of China's plumbing valve industry, Yongda maintains deep backward integration. Unlike assembly-only operations, we forge our valve bodies, machine the brass components, and formulate our plastic enclosures in-house. This minimizes reliance on third-party sub-contractors and buffers our clients from raw material delays.
Our machine park features over 600 systems, including 80+ specialized multi-axis machine tools for high-precision boring, threading, and alignment. This industrial base is optimized to produce high-tolerance brass parts which serve as the housing for our smart actuators.
By integrating advanced testing equipment—such as spectrographic alloy analyzers, valve life cycle test rigs, and environmental chamber test boxes—we back every shipment with verifiable test certificates, conforming to critical international standards.
Cokaren is our premium consumer-facing and specialist brand, established to deliver refined aesthetic styles, user-friendly operation interfaces, and exceptional long-term reliability. Our brand promise is simple: "keep flowing, keep warming".
We believe smart heating should not be visually intrusive or mechanically complex. Cokaren focuses on designing modern thermostat panels that blend harmoniously with upscale residential architectures, while utilizing robust engineering components internally.
Our Culture: Struggle, Enterprising, Pragmatic, Innovative
Our Tenet: Customer first, Quality based
Quality Policy: Fine work, no leakage
We continually invest in human capital and workplace ergonomics, aligning business expansion with the personal wellbeing, welfare, and safety of our 600+ factory professionals.
Yongda maintains strict compliance with the world's most demanding management and production frameworks, verifying our operations through accredited testing bodies.
A complete breakdown of our hydraulic distribution architecture. From initial filtration to terminal zone control, we provide full integration.
The first line of defense in domestic water sanitation, filtering 98% of impurities in incoming pipelines.
Controls flow rates in hot/cold boiler zones, using a precision forged spherical spool.
Exhausts excess air from high-point heat pumps to prevent cavitation and improve thermal cycles.
Stabilizes hydronic temperatures by mixing high-temp supply with return flows, protecting piping.
Combines multi-zone inputs to modulate HVAC networks dynamically based on comfort curves.
Monitors pressure, temperature, and filters impurities, acting as the main manifold isolator.
Distributes flow rate cleanly across multiple hydronic loops, providing exact zone balance.
Dual-function design combining an isolation ball valve with an integrated stainless steel screen.
A closer look at our mechanical products, engineered for plumbing systems, temperature control loops, and water meters.
Designed for radiators, allowing users to manually regulate heating loops.
Directs boiler water and manifold return flows to maintain optimal floor tube temperatures.
Premium brass body, designed to resist high temperature corrosion over decades.
Forged brass outdoor faucet featuring a smooth quarter-turn mechanism.
Full-port straight-through flow design offering minimal pressure drop.
Machined brass connections to secure and stabilize metering devices.
Conforms to US standard threads, suitable for industrial and plumbing applications.
Protects plumbing lines by maintaining downstream pressures at safe operating levels.
Providing technical clarity on electrothermal actuator installation, smart thermostat protocols, and OEM manufacturing options.
An NC actuator remains closed until electrical voltage is applied, preventing fluid flow in the loop. An NO actuator is open by default, allowing free flow until energized. Normally Closed configurations are standard in radiant floor heating because they prioritize energy conservation and safety during power cuts.
We use specialized spectrometers to check the chemical makeup of every melt before forging. For markets like North America and Germany, we use certified lead-free brass (such as CW617N or C37700), ensuring lead content stays within strict regulatory limits to protect local drinking water.
Yes. Our smart thermostat line features built-in Wi-Fi and Zigbee chips that connect to standard smart home ecosystems through the Tuya API. We are also rolling out Matter-over-Thread models to support direct local network control.
Our actuators are designed with the standard M30x1.5 connection thread, making them compatible with most hydronic manifolds. We can also customize thread sizes, stroke lengths, and cable lengths for specific OEM orders.
Our standard actuators take 3 to 5 minutes to fully open or close. This delay is intentional: it prevents water hammer in the plumbing lines and protects the copper piping system from rapid pressure spikes.
Yes, OEM and ODM projects are a core focus. We offer custom laser etching for brass bodies, custom colors for actuator housings, and custom retail packaging. We also design custom circuit boards and application software for specialized smart thermostat projects.
Advanced zone controllers and high-precision thermal actuators for commercial HVAC and residential heating loops.
