Yongda
Yongda
Engineered to withstand the demanding operating parameters of Veneto’s regional HVAC, underfloor heating, and industrial distribution lines.
Forged piston assembly designed to mitigate inlet surges and maintain constant system pressure in high-demand domestic water applications.
Nickel-plated surface finishing to prevent scaling and corrosion. Designed for seamless integration into Verona's regional hydronic space heating.
Precisely machined gas and water thread configuration, satisfying European standard sealing requirements for medium-pressure networks.
Integrated micro-mesh filter prevents structural debris from entering delicate downstream flow mechanisms, optimizing system reliability.
Verona, situated at the strategic intersection of major European transport corridors and the Adige River basin, supports a dense cluster of agri-food processing plants, commercial real estate, and municipal district heating networks. Managing water and steam pressure within this geographic environment presents distinct engineering challenges.
The local water authority networks and AGSM AIM's district heating services require components built to withstand variable hydraulic loads. Fluctuations in pressure profiles within historical municipal lines necessitate the installation of high-precision Pressure Reducing Valves (PRVs). These valves act as barriers, preventing catastrophic line failures, optimizing flow profiles, and minimizing pipeline water loss.
Our forged brass piston PRVs and HVAC accessories provide optimal mechanical response, countering the stress induced by sudden pressure drops and system cavitation. With Verona’s compliance framework strictly adhering to UNI EN standards, utilizing premium lead-free and dezincification-resistant (DZR) brass alloys has transitioned from a recommendation to a regulatory mandate.
Translating advanced metallurgical research into scalable fluid control frameworks for worldwide distribution networks.
Our PRVs are engineered with optimized hydrodynamic geometries that guide fluid paths cleanly through internal ports, minimizing noise generation (conforming to EN ISO 3822) and protecting system walls from cavitation-induced pitting.
Designed to manage thermal expansion stresses in closed-loop domestic hot water (DHW) and solar thermal systems, maintaining system pressures well within safe thresholds.
Enabling modern district energy loops to balance high differential pressures automatically, reducing pump wear and enhancing the efficiency of heat exchangers.
| Valve Type / Series | Material Composition | Inlet Pressure Rating | Outlet Adjustment Range | Key Standards Compliance |
|---|---|---|---|---|
| Y9021 Dynamic Series | CW617N / Lead-Free DZR Brass | PN16 / PN25 | 1.0 to 6.0 Bar | EN 1567, DM 174/2004, CE |
| Piston-Type Reducing Valves | Forged Brass / Stainless Steel Piston | PN25 | 1.5 to 5.5 Bar | ISO 9001:2015, WRAS Approved Alloys |
| Thermostatic Blending Units | Anti-Scale Brass Alloys | PN10 | 30°C to 65°C Blending | CE, ACS Certification |
Founded in 1996 (formerly known as Yuhuan Yongda Plumbing Co., Ltd.), Yuhuan Yongda Fluid Control Co., Ltd. is situated in Yuhuan, Zhejiang—the recognized valve manufacturing hub of China. As a specialized engineering enterprise, we focus on the research, mechanical design, material development, and commercial supply of high-grade plumbing valves, brass fittings, and HVAC system components.
Our product catalog spans three core sectors: brass valves, pipeline fittings, and HVAC accessories. Positioned within the premium tier of the industry, our design values prioritize environmental protection, structural integrity, and long service life. This has earned our catalog significant recognition across demanding markets in North America, Europe, and Northern Italy.
Cokaren, our dedicated brand, operates under the brand promise of "keep flowing, keep warming". The brand focuses on delivering refined aesthetic designs, tight machining tolerances, and reliable functionality to improve the comfort and security of modern domestic heating and water systems.
"Our Quality Policy: Fine work, no leakage. Customer first, quality based."
With an actual usable facility area reaching 80,000 square meters and over 80 sets of specialized high-precision machine tools, we deliver consistent quality for Verona OEM/ODM demands.
Send Inquiry NowIntegrated solutions engineered to manage pressure, filter particulate matter, and maintain thermal equilibrium across residential and commercial installations.
Our heating and plumbing components work together to provide systematic control of residential water loops. From structural filtration at the property inlet to thermodynamic balancing in individual underfloor radiant loops, every component plays a role in sustaining pressure and temperature balance.
The first line of defense in domestic water sanitation, filtering up to 98% of pipeline impurities.
Controls hot and cold water distribution at the boiler interface using a reliable spherical spool design.
Discharges trapped air from heat pumps to optimize heat transfer and protect internal impellers.
Controls thermal blending to keep system temperatures steady and protect PEX pipe runs.
Monitors and adjusts ambient room temperatures across multi-zone installations.
Filters impurities, monitors temperature/pressure, and controls return manifold loops.
Distributes water flow across multiple zones to maintain comfortable domestic ambient conditions.
Need custom dimensions or OEM configurations?
Request Custom Valve CAD →Uncompromising testing procedures to satisfy rigorous European regulatory demands.
Our quality system is verified under ISO 9001:2015, ensuring traceabilty and consistency across all production runs. Environmental protection standards are maintained through ISO 14001:2015, minimizing industrial waste and emissions during forging and machining.
Additionally, workplace safety is audited under ISO 45001:2018. This robust compliance framework guarantees that every valve exported to the Verona market has been manufactured under ethical, stable, and highly regulated working conditions.
Our testing labs execute pressure tolerance and leakage checks on 100% of outgoing PRVs. Our policy of "Fine work, no leakage" is supported by specialized testing machinery. Dynamic hydraulic stress testing guarantees stability under water hammer conditions, verifying that setting ranges remain stable over long duty cycles.
For brass components handling drinking water, we control lead and zinc migration parameters, ensuring full compliance with the chemical requirements of Italian decree DM 174/2004 and the European Drinking Water Directive.
Precision-engineered brass valves, adapters, and compression systems developed for long-term installation stability.
Precision barbed insertion profile prevents decoupling under pressure surges, suitable for commercial agriculture in Veneto.
Features fine-threaded adjustments to balance flow distribution across multi-story hydronic installations.
Fully compliant with European CE standards, providing reliable seals for temporary or permanent PEX tube terminations.
Features a robust compression ring profile to secure multi-layer PEX-AL-PEX tubing without deformation.
High-precision flexible expansion bellows designed for thermal actuators and steam pressure reduction systems.
Ensures transition integrity between metric-copper and thread-run connections in Northern Italian projects.
Complete mixing station with integrated bypass to stabilize temperatures in residential underfloor heating.
Features a heavy forged body and full port path, minimizing flow restriction and pressure drop across regional pipelines.
Fittings designed for distribution pipelines, ensuring leak-free connections in Verona projects.
Machined to international specifications, providing direct compatibility for custom valve networks.
Thick-walled brass cap designed to withstand static pressure surges during maintenance shutoffs.
Lockshield adjustment control ensures balanced hydronic distribution and prevents unauthorized setting modification.
Engineered using CW617N forged brass, offering high mechanical strength at critical 90-degree pipeline bends.
How our products solve real-world fluid control problems in Northern Italy.
Agriculture in the hilly Valpolicella region relies on high-pressure water delivery. Our piston PRVs reduce supply line pressures to protect micro-drip networks, preventing tube burst and regulating water delivery regardless of elevation-induced head pressures.
Industrial conversions in the Verona ZAI (Zona Agricola Industriale) require matching modern plumbing standards with older municipal mains. Our balance valves and manifolds manage pressure transitions, reducing pressure-drop risks at peak usage times.
Residential updates in Verona’s center use underfloor mixing loops to optimize boiler performance. The Y5020 Mixing Shunts combined with smart thermostats reduce thermal shock, extending PEX pipe lifespans and lowering domestic energy bills.
We provide stable supply chains for OEM/ODM distributors and engineering buyers in Verona. Our logistics partners utilize the Brenner axis route or import via ports at Venice or Trieste, facilitating efficient routing from our production lines to Northern Italian distributors.
Our sales team coordinates export customs clearance, technical documentation, and provides CAD files to simplify engineering design. With production capacities exceeding thousands of units daily, we offer flexible scheduling to meet project timelines for large-scale installations.
Adapting plumbing components for upcoming digital utility integration.
Development of pressure-reducing valves with electronic pressure feedback loops. This enables facility managers in Verona to monitor pressure spikes and flow variations in real time, preventing pipeline stress.
Transitioning to lead-free brass formulations to satisfy stricter revisions of European drinking water directives, ensuring long-term product durability and compliance.
Using simulation software to refine interior valve flow passages. This lowers flow resistance and helps limit wear inside the valve body under high-velocity conditions.
Answers to technical and commercial questions about pressure reducing valves for Verona.