Yongda
Yongda
Explore our foundational brass valves, specialized fittings, and thermodynamic components built for high-stress municipal and private heating networks.
The transition toward robust, zero-emission fluid delivery infrastructures has catapulted the demand for CE-certified welded valves to historic highs. In high-pressure district heating systems, gas distributions, and heavy manufacturing utilities, mechanical joints represent points of systemic risk. Unlike standard threaded connections, welded valves offer a monolithic, hermetically sealed interface that resists extreme thermal fluctuations, structural vibration, and water hammer effects.
Industrial procurement departments globally—ranging from European municipal heating plants to North American oil and gas processing complexes—prioritize structural integrity and compliance above all else. Under the European Union’s Pressure Equipment Directive (PED 2014/68/EU), CE certification is not simply a label but a critical assurance of safety, verified via strict non-destructive testing (NDT), hydrostatic pressure verification, and metallurgical analysis. This regulatory landscape compels decision-makers to seek proven manufacturers capable of providing transparent pricelists and comprehensive engineering quotes that align with strict budgetary targets without compromising structural safety.
Understanding the metallurgical, mechanical, and regulatory parameters governing modern valve fabrication.
Developing high-purity brass alloys and forged steel bodies optimized for weld-integrity. Minimizing heat-affected zone (HAZ) degradation during automatic field welding is central to preventing intergranular stress corrosion cracking (IGSCC).
Transitioning from manual intervention to smart electro-thermal actuator loops. By combining precision check-valves, venting manifolds, and thermostats, modern buildings automate heat distribution, adjusting to environmental loads in real time.
Equipping manifolds and mixing shunts with spring-return actuators and integrated bypass mechanisms. This ensures that pressure anomalies, system scale build-ups, and sudden electric disruptions trigger controlled default configurations.
Welded valves deployed in industrial process loops handle pressurized fluids classified as group 1 (hazardous) or group 2 (safe). Sourcing components without explicit CE conformity exposes projects to severe legal liabilities and catastrophic structural integrity risks. Our CE-compliant manufacturing process integrates trace-element testing, 100% pneumatic-hydrostatic test sequences, and raw material tracking, guaranteeing complete peace of mind for engineering procurement projects globally.
A trusted global leader in the design, development, and supply of brass valves, fittings, and HVAC systems.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was founded in 1996, and is situated in the prestigious "China Valve Capital" – Yuhuan, Zhejiang. As an industry-leading manufacturer, the company focuses on product design, engineering, advanced production pipelines, and global commercial sales.
Our product portfolio is divided into three core divisions: brass valves, high-performance fittings, and HVAC components. These product ranges are strategically positioned in the medium-to-high-grade segments, highlighting eco-friendly lead-free engineering, and are highly favored by industrial clients across North America, Europe, and neighboring geographic zones.
Spanning a physical factory footprint exceeding 45,000 square meters (with actual usable facility spaces reaching 80,000 square meters), the corporation houses over 600 sets of advanced manufacturing and testing equipment, including more than 80 specialized machining systems. This mechanical infrastructure allows us to fulfill bespoke engineering requirements and export reliable valve solutions to over 20 countries globally.
Cokaren, a premium tier brand under our corporate umbrella, is dedicated to developing fluid control accessories with refined exterior profiles and superior operational thresholds to deliver clean, long-lasting performance for modern building systems.
Cokaren’s foundational brand philosophy—"Keep flowing, keep warming"—drives our design team to manufacture premium floor heating and manifold solutions that create safe, comfortable residential and industrial environments.
Guided by a vision of sustainable development and innovation, Cokaren continues to scale dynamic global pipelines, aspiring to provide high-grade environmental valve solutions to standard and specialized infrastructure projects worldwide.
"Keep flowing, keep warming"
Implementing strategies to build dynamic, growth-focused enterprises representing absolute quality and dependability.
Our commitment to defect-free manufacturing and environmental stewardship is backed by global standardizations.
Yongda Fluid Control operates under a rigorous regulatory matrix. The facility has successfully achieved and maintains:
Our core quality policy remains absolute: "Fine work, no leakage." To support this, each batch of welded valves and fittings undergoes strict hydrostatic tests, spectral material verification, and seal aging analysis before dispatch.
Our integrated solutions facilitate balanced hydronic heat routing, thermal mixing control, and high-efficiency fluid venting for modern residential and district energy infrastructures.
The first line of defense in domestic water sanitation, can filter 98% of impurities in the pipeline.
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Used to control the inflow and outflow of cold water and hot water in the boiler, with Spherical spool.
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Used to discharge excess air in the air source water heater to ensure stable operation of the equipment.
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Used to mix cold and hot water in pipes, stabilizing temperature, protect pipeline.
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Used to filter and discharge impurities in the pipeline, control the switch of the back-end manifold, measure temperature and water pressure.
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Distribute water flow to various rooms Combine all the equipment to adjust the room temperature.
Learn More →Understanding cost structures, metal pricing indexes, order volumes, and customized engineering quotes.
Procurement teams seeking CE-certified welded valve quotes must understand that prices are governed by several key variables. Unlike standard off-the-shelf residential valves, industrial welded valves are priced according to structural thickness, pressure classifications (e.g., PN16, PN25, PN40), raw material grades, and design complexity.
High-quality brass (such as CW617N, CW614N, or lead-free alternatives like DZR) is priced against the London Metal Exchange copper and zinc indices. Standard agreements for volume purchasers often incorporate variable pricing models where quotes remain locked for a specified window (e.g., 14 to 30 days) to mitigate fluctuations in raw material pricing.
Welded valves require specialized preparation of weld ends (butt-weld or socket-weld configuration) conforming to standards such as EN 12627. This precision machining ensures clean joint interfaces during field installation. The extra machining steps, paired with strict wall-thickness requirements to withstand thermal welding stress, yield a premium pricing structure compared to simple threaded alternatives.
Clients seeking customized branding, specialized dimensions, or pre-assembled configurations (such as integrating manifolds with temperature-controlled electric heating actuators) can request detailed pricing. Our 45,000 sqm factory floor handles both batch manufacturing and custom OEM production, optimization that helps lower bulk unit costs.
* Note: The pricing index listed above is indicative. To obtain a customized project quotation with target shipping parameters, please submit your material takeoff sheet directly to our engineering sales division.
Critical engineering, regulatory, and commercial answers for project designers and procurement managers.
CE certification indicates conformity with safety, health, and environmental protection standards for products sold within the European Economic Area (EEA). For welded valves, this verifies compliance with the Pressure Equipment Directive (PED 2014/68/EU), ensuring that pressure boundaries, weld joints, and base alloys are tested to withstand operational limits without bursting or leaking.
Standard OEM/ODM engineering quotes are processed within 48 hours of design submittal. Production lead times generally span 30 to 45 days, depending on batch volumes, customization requirements, tooling needs, and material specifications. We operate more than 600 sets of production and testing equipment to help maintain delivery schedules.
Under our strict quality policy of "Fine work, no leakage," each valve undergoes automated pressure testing (both pneumatic and hydrostatic) before packaging. Standard quality testing verifies seal integrity and structural housing stability under pressures exceeding 1.5 times the nominal rating.
We use CW617N, CW614N, and lead-free dezincification-resistant (DZR) brass alloys. These materials feature high resistance to corrosion and selective leaching, preserving tensile strength in systems that face continuous thermal cycling.
Yes, our product range includes electric heating actuators, manual/automatic thermostatic mixing units, and smart digital thermostats designed to work alongside our manifold lines.
Explore our specialized brass connectors, system bypasses, filters, and safety relief devices.
