Yongda
Yongda
CE Certified and engineered for reliable industrial performance
In high-risk industrial environments, fluid and gas containment systems serve as critical operational backbones. Unauthorized operation of gate valves presents severe risks of process disruption, mechanical damage, environmental pollution, and tragic worker safety incidents. The implementation of lockout/tagout (LOTO) procedures, validated by the CE Certification standard, is a mandatory risk mitigation strategy under EU regulations and OSHA guidelines globally.
A gate valve lock functions by entirely enclosing the valve handle wheel, preventing accidental tampering or unauthorized activation. As a manufacturing leader, Yuhuan Yongda Fluid Control Co., Ltd. integrates decades of precision brass component forging with high-durability polymer or metallic lock casings. Our safety solutions assure compatibility, mechanical resilience, and long-term regulatory compliance.
Founded in 1996 in "China Valve Capital" – Yuhuan, Zhejiang, we are a professional plumbing and HVAC valve enterprise focusing on design, development, production, and sales.
Cokaren is our dynamic new brand committed to refining aesthetic design, increasing structural longevity, and delivering top-tier reliability. Under our brand promise of "keep flowing, keep warming", we focus on producing water systems and safety hardware that ensure absolute peace of mind in residential, commercial, and industrial facilities.
Leveraging our advanced manufacturing matrix, which includes over 80 sets of specialized machine tools, Cokaren designs integrated security interfaces for high-temperature boilers, floor heating manifolds, and water lines where pressure control and isolation safety are paramount.
Engineered for heavy-duty isolation, safety locking, and municipal compliance.
In central district heating and commercial HVAC networks, locks prevent unauthorized balance alterations and thermal flow manipulation, securing hot water distribution and manifold zones from end-user interference.
Heavy-duty safety locking ensures compliance with lockout/tagout standards during maintenance outages, preventing toxic leaks, hazardous chemical releases, and unintended line pressurizations.
Protects water meters, main bypass connections, and water filter configurations from tampering, thereby safeguarding utility infrastructure and ensuring accurate billing metrics.
Yuhuan Yongda is continuously investing in next-generation materials and smart systems. Our roadmap includes integrating RFID tags and IoT connectivity directly into the bodies of our CE-certified gate valves and locks, facilitating digitized LOTO status tracking across industrial plants.
To ensure exceptional mechanical strength, we employ automated forging and multi-angle CNC machining centers. This minimizes physical tolerances down to +/-0.02mm, guaranteeing that valve lock casings seat securely and prevent leverage attacks or tampering.
Ensures optimal copper purity, zero porosity, and DZR performance.
Heavy duty stamping machines provide structural density and leak resistance.
Every batch is pressure, temperature, and cycling test certified before shipping.
Operating within Yuhuan, the premier valve capital of China, grants us a competitive geographical advantage. Our localized manufacturing ecosystem encompasses raw copper sourcing, tooling centers, forging facilities, precision machining shops, surface plating plants, and deep-water logistical access.
This concentrated supply chain reduces lead times, cuts logistical costs, and allows for agile custom OEM/ODM development. With a massive 45,000㎡ plant, 600+ machinery units, and ISO9001, ISO14001, and ISO45001 certificates, we guarantee a stable product supply even during global supply chain fluctuations.
Our quality policy: "Fine work, no leakage."
How Yuhuan Yongda products safeguard system flow from source filtration to room temperature modulation.
The first line of defense in domestic water sanitation, designed to filter up to 98% of pipeline impurities and prevent downstream valve fouling.
Designed to control cold and hot water lines on boiler systems. Features a spherical spool to prevent pressure spikes.
Automatically discharges excess air from systems, ensuring consistent heat pump and water heater performance.
Blends hot and cold water supplies, delivering stable discharge temperatures to protect system pipelines.
Integrates heating and cooling setups to automatically regulate room temperature, reducing energy waste.
Filters and discharges pipeline debris, regulates backend manifold lines, and monitors system temperature and pressure.
Quality assurance at Yuhuan Yongda is built into every step of the process. We operate under three major management systems: ISO9001-2015 (Quality Management), ISO14001-2015 (Environmental Management), and ISO45001-2018 (Occupational Health & Safety).
Our CE-marked gate valves and locks undergo extensive stress tests, including pneumatic shell leakage checks, hydraulic seat sealing checks, and mechanical cycling assessments. These tests confirm the valve bodies can handle nominal pressures up to PN16/PN25 and resist dezincification, ensuring long service lives in corrosive networks.
Key questions on LOTO standards, CE certifications, and brass gate valve applications.
CE marking indicates that products meet European safety, health, and environmental standards. For industrial valves and locks, it confirms compliance with the Pressure Equipment Directive (PED) and relevant safety regulations, ensuring safe use in hazardous networks.
We use premium-grade brass, such as CW617N, HPb59-1, and dezincification-resistant (DZR) alloys. These materials resist wear, scale buildup, and chemical oxidation, making them suitable for potable water and heating systems alike.
The lockout device surrounds the valve handwheel. Once closed, multiple padlocks can secure the cover shut. This ensures the valve cannot be turned until all authorized maintenance technicians remove their individual locks.
Yes, our Yuhuan facility houses over 80 specialized machine tools and an experienced R&D team. We can customize thread configurations, body profiles, pressure ratings, and lock dimensions to suit your project specifications.
Precision-engineered HVAC components and brass connection fittings
