Yongda
Yongda
Explore our primary array of high-precision manifolds, valves, and compression fittings engineered for maximum hydraulic stability.
In modern industrial fluid networks, municipal water mains, and complex commercial HVAC designs, fluid dynamic control is critical. A Pressure Reducing Regulator (PRR) serves as the first line of defense, converting variable high-pressure supply systems into highly stable, lower output pressures. Proper design prevents pipeline explosions, mitigates hydraulic shock (water hammer), reduces downstream equipment wear, and ensures continuous fluid stability.
Establishing reliable pressure profiles requires precision engineering, DZR (Dezincification Resistant) lead-free brass metallurgy, and strict compliance with international manufacturing guidelines such as EN 1567 and ASSE 1003. When sourcing regulators globally, engineering teams prioritize both material durability and hydraulic consistency. In this comprehensive technical guide, we examine the supply dynamics of China's premier valve clusters and trace the operational metrics of Yuhuan Yongda Fluid Control Co., Ltd., a manufacturer that has defined hydronic standards since 1996.
Yuhuan, Zhejiang, is recognized globally as the "China Valve Capital." This localized manufacturing ecosystem provides access to high-grade non-ferrous raw materials, specialized precision forging machinery, surface treatment labs, and professional logistics hubs, allowing manufacturers to operate with unmatched speed and efficiency.
Utilizing hot forging processes minimizes micro-porosity defects in brass bodies. Combined with high-precision CNC machining centers and dedicated multi-way special machine tools, Yuhuan manufacturers hold dimensional tolerances within micrometers, guaranteeing leak-free operations.
By integrating material extrusion, mechanical forming, assembly line procedures, and 100% automated pressure testing in a single facility, Chinese manufacturers offer substantial Total Cost of Ownership (TCO) savings without compromising on global quality standards.
Originally established in 1996 as Yuhuan Yongda Plumbing Co., Ltd., the company has grown into a leading force within Zhejiang's high-tech fluid engineering sector. Located in Yuhuan, the heart of Chinese valve manufacturing, the firm oversees integrated design, testing, molding, production, and distribution services.
Our catalog features three primary product divisions: high-grade brass valves, precision piping components, and HVAC distribution products. By prioritizing environmental safety and high performance, these components have gained significant market share across North America, Europe, and Asia.
Spanning a physical facility area of over 45,000 square meters (with an actual usable floor area reaching 80,000 square meters), the facility houses more than 600 sets of advanced manufacturing systems, including 80+ specialized CNC machining units. With these capabilities, Yongda manages large OEM and ODM contracts for municipal utility and hydronic heating partners globally.
To meet the growing demand for smart building controls and modern residential water delivery designs, Yongda launched its premium brand: Cokaren. Guided by the brand promise "Keep flowing, keep warming", Cokaren focused on refined aesthetic appeal, strict material hygiene controls, and improved mechanical service life.
Through the Cokaren brand, Yongda integrates smart thermodynamic balancing, safety bypass systems, and filtration units to provide comfortable, safe domestic environments. Cokaren continues to drive product development and supply-chain efficiency to deliver world-class water safety and management components.
Struggle, Enterprising, Pragmatic, Innovative. We continuously invest in improving our engineering processes and employee well-being, aligning team success with high-quality client outcomes.
Customer first, Quality based. We prioritize long-term performance and material traceability to support our partners' commercial fluid infrastructures.
Fine work, no leakage. Every valve, manifold, and regulator undergoes strict hydrostatic and pneumatic sealing checks to ensure reliable field performance.
Yongda maintains strict quality management and workplace safety protocols. Our facilities are certified to international regulatory and environmental standards, including:
A comprehensive approach to modern hydronic, heating, and domestic water management systems.
Acting as the primary defense line for plumbing circuits, this unit filters out 98% of particulate impurities, protecting downstream pressure regulators from friction wear.
Designed with a spherical spool layout, this valve controls domestic cold and hot water inlets and outlets to protect boiler heaters from backflow.
Automatically releases air pockets in heat-pump and boiler circuits to prevent air binding, cavitation, and system noise.
Dynamically blends supply and return water to control circulation temperatures and prevent thermal shock in radiant systems.
Provides centralized automation controls, adjusting heating zones according to real-time ambient parameters to optimize energy use.
A multi-functional control valve configured to drain sediment, check downstream pressures, and manage hydronic loops.
A Pressure Reducing Regulator works through a balance of forces. Under static conditions, inlet fluid enters the valve body and is throttled through an orifice regulated by a piston or diaphragm connected to an adjustable spring. As downstream demand decreases, downstream pressure rises, acting against the diaphragm to close the valve seat and maintain the preset pressure.
Conversely, when downstream demand increases, the pressure under the diaphragm drops. The spring force pushes the seat assembly open, allowing more fluid to flow and maintaining consistent downstream pressure despite fluctuations in the inlet supply.
| Parameter | Industrial Standard Spec | Yongda/Cokaren Standard |
|---|---|---|
| Primary Alloy Material | Standard CW614N Brass | DZR Brass / Lead-Free CW617N Brass |
| Maximum Inlet Pressure | 16 Bar (232 PSI) | Up to 25 Bar (362 PSI) |
| Outlet Adjustability Range | 1.5 - 6.0 Bar | 1.0 - 6.5 Bar (with Locking Mechanism) |
| Max Operating Temperature | 80°C (176°F) | 95°C (203°F) for Radiant Hydronics |
| Testing Conformity | EN 1567 | 100% Hydrostatic Sealing Certified |
Industrial procurement teams require manufacturing partners that understand and comply with regional regulations. High-precision fluid components must meet national safety and material standards to ensure compliance during installation and operation.
For drinking water applications in the United States and Canada, components must comply with NSF/ANSI 61 to ensure lead-free safety, while pressure regulators should meet the performance criteria outlined in ASSE 1003.
In Europe, pressure reducing valves must meet EN 1567 standards, which cover acoustic performance, pressure drop limits, and material safety. Additionally, systems operating under high temperatures require CE marking under the Pressure Equipment Directive (PED).
Yuhuan Yongda supports global partners through specialized engineering services, including custom thread patterns (NPT, BSP, G), private-label branding via Cokaren, and customized structural dimensions to fit within compact manifold boxes.
Our engineering team designs components that integrate seamlessly with underfloor heating loops, boilers, and municipal inlets.
Integrates isolation and filtration into a single body to protect downstream regulators from scaling and particle wear.
Maintains hydronic balance across radiant heating loops, preventing overheating and optimizing system energy use.
Uses an integrated thermostatic sensor head to blend hot supply water with cooler return water, protecting floor loops.
Distributes flow across up to 12 zones, with optional built-in flow meters and thermal actuators for precise room control.
Corrosion-resistant outdoor utility taps designed for durability under varying weather and temperature conditions.
Provides full-bore, unrestricted flow with minimal pressure drop, suitable for main isolation lines.
Maintains precise alignment and sealing for utility meters, helping to prevent leakage in municipal installations.
Expert solutions for common questions regarding pressure regulator design, sizing, and system integration.
Browse additional plumbing, HVAC, and industrial flow components certified for international markets.
For custom engineering alignments, the following original factory product models and configurations are supported:
