Yongda
Yongda
Explore our top-tier selection of CE-certified flow control devices, precision brass fittings, and automated systems designed for resilient operation under critical mechanical loads.
In modern industrial and large-scale agricultural fluid distribution, selecting a manufacturer with standardized compliance pathways is crucial. Enterprise-level buyers must balance hydraulic performance, corrosion resistance, and regulatory compliance. Irrigation gates and control valves serve as critical points of regulation in extensive pipeline systems; any failure leads to water loss, chemical runoff, or complete operational downtime.
Compliance & Quality Parameters: The European market demands strict adherence to the Pressure Equipment Directive (PED) and general CE marking standards. Our products, forged with certified CW617N brass, meet these regional requirements. This alloy resists dezincification (DZR), preventing wall thinning and premature failure in environments with varying water chemistry.
Lifecycle Optimization: Enterprise procurement processes prioritize Total Cost of Ownership (TCO). By specifying valves engineered with premium elastomers and precision-machined threads, systems operate with minimal wear and zero leakage, optimizing long-term infrastructure investments.
"Regulatory alignment with CE standards prevents supply chain bottlenecks and guarantees project sign-off for critical infrastructure applications across the EMEA region."
Our development focus centers on material durability, tight manufacturing tolerances, and the integration of automated actuators for next-generation fluid control systems.
Our forged brass components leverage European standard CW617N alloys, ensuring excellent hot forming properties and structural integrity. The chemical composition is carefully balanced to limit lead release while maintaining high tensile strength.
We build compatibility for thermal and electric actuators to allow integration with building management systems (BMS) and automated agricultural networks, enabling real-time hydraulic balancing.
Each production run undergoes comprehensive pneumatic pressure testing at 1.5x nominal pressure rating to guarantee a zero-leakage seal, in line with ISO 9001 quality management procedures.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) is a manufacturer located in Yuhuan, Zhejiang—widely recognized as the valve capital of China.
Operating a facility of over 45,000 square meters with an actual usable floor area reaching 80,000 square meters, we maintain a robust manufacturing footprint. Our machine shops feature more than 600 sets of advanced production and testing equipment, including 80+ specialized machine tools engineered to maintain precise dimensional tolerances.
Our product portfolio focuses on brass valves, plumbing fittings, and HVAC distribution manifolds. Positioned for mid-to-high-grade international markets, we emphasize lead-free and anti-corrosion properties to meet strict environmental standards in North America and Western Europe.
Cokaren Brand Strategy: Our premium brand, Cokaren, is dedicated to refined appearance and tighter performance metrics under the brand promise "keep flowing, keep warming". We design residential and industrial fluid management systems that deliver safety and long-term peace of mind.
Our components work together to optimize HVAC loops, underfloor heating networks, and water purification paths.
Protects plumbing and irrigation systems by filtering up to 98% of particulates and suspended solids.
Controls flow rates in boilers using a precision-machined spherical spool for reliable isolation.
Automated venting valve that discharges accumulated air from heat pump and hydronic circuits to maintain pump efficiency.
Blends hot and cold water streams to stabilize outflow temperatures and protect downstream piping.
At Yuhuan Yongda, quality is central to our design and manufacturing processes. Our quality policy states: "Fine work, no leakage." This focus underpins every phase, from raw material selection to machining, seal fitting, and dynamic testing.
We maintain an integrated management system compliant with major international standards:
These certifications ensure that our processes are standardized and repeatable, minimizing deviations to provide global clients with reliable supply chain security.
Technical details and support information for project engineers and procurement specialists.
CW617N is a standard European alloy (CuZn40Pb2) designed for hot forging. It provides a balanced combination of ductility, tensile strength, and machinability. Its composition is tightly regulated to ensure reliable pressure rating limits, making it ideal for meeting Pressure Equipment Directive (PED) regulations.
We test every production batch. This includes geometry checks using CNC measuring equipment, followed by air and water pressure tests at 1.5 times the nominal rating (PN16/PN25) to verify seat seal and body integrity.
Our actuators use standard thread interfaces (such as M30x1.5). When triggered by a thermostat control signal (24V or 230V), the internal wax element expands, driving the valve stem down to regulate flow through individual loops.
For high-salinity or corrosive fertilizer mixtures, we recommend specifying nickel-plated or chrome-plated versions of our brass valves. This plating provides an extra layer of protection against galvanic and chemical corrosion.
Explore our collection of manifolds, control units, and adapters designed for hydronic systems and fluid networks.
