Yongda
Yongda
Explore our foundational brass valves, distribution manifolds, and custom heating actuators optimized for commercial and residential fluid systems.
Pioneering high-grade brass engineering and industrial flow safety mechanisms for global enterprises.
Established in 1996 in Yuhuan, Zhejiang—the renowned "China Valve Capital"—Yuhuan Yongda Fluid Control Co., Ltd. has developed into a premier manufacturer specialized in the design, development, production, and distribution of mid-to-high-grade brass valves, fittings, and HVAC systems. With a total industrial footprint of over 45,000 square meters and a usable manufacturing area reaching 80,000 square meters, we integrate massive scale with meticulous precision.
Our operation houses more than 600 sets of advanced manufacturing and inspection equipment, including 80+ specialized machine tools. This capacity guarantees that we can accommodate varied international plumbing, heating, and safety requirements. Our export footprint spans across 20 countries, with a primary focus on North American and European markets where quality standards and environmental safety protocols are highly demanding.
"Keep Flowing, Keep Warming" — Cokaren, our premium brand, is dedicated to refining product aesthetics and structural integrity, delivering zero-leakage security and complete thermal-fluid optimization to modern households and industrial installations alike.
A whitepaper analysis of mechanical locking interfaces, material metallurgy, and Lockout/Tagout (LOTO) security.
Our ball valve locks are engineered with reinforced high-grade steel brackets or heavy-duty thermoplastic polymers. They completely enclose the valve lever, preventing unauthorized actuation in high-pressure steam, chemical, or potable water lines.
Designed strictly in compliance with OSHA Standard 1910.147 (Control of Hazardous Energy). The integrated padlock holes accept multiple shackle diameters, ensuring a secure multi-user lockout procedure during critical line maintenance.
Utilizing premium UV-stabilized coatings and high-impact nylon resins, our locking devices resist cracking, chemical solvents, extreme temperatures (-46°C to 183°C), and corrosive maritime atmospheres without structural degradation.
In high-pressure industrial facilities, a valve failure or accidental opening can lead to catastrophic consequences. As a premier ball valve lock exporter, we recognize that security devices are only as reliable as their chemical composition. Our locked brass valves and accompanying lock out housings are built to withstand heavy shear forces. We employ forging processes utilizing lead-free and dezincification-resistant (DZR) brass alloys, ensuring the valve bodies themselves maintain maximum tensile strength even when subject to torsional stress from external lock brackets.
Moreover, the mechanical interface of our locked valves incorporates double-stem seal designs with PTFE packing. When the lock is engaged, it restricts not only rotation but protects the stem assembly from external impacts. This double-barrier design prevents micro-leakage—a crucial requirement for HVAC manifolds and hazardous gas distribution networks.
Unlocking operational efficiency and environmental compliance through automated manufacturing systems.
Our facility in Yuhuan employs semi-automated CNC machining, automated forging presses, and specialized multi-axis machine tools. This high-density production environment minimizes human error, ensuring dimension consistency within tolerances of ±0.02mm. Every batch of brass ball valves, manifold assemblies, and locking components undergoes strict testing: 100% pneumatic sealing tests under 0.6-0.8 MPa, hydraulic pressure burst testing, and material spectrum analysis to verify alloy purity.
Under our quality policy of "Fine work, no leakage", we systematically track materials from the raw brass ingot to the finished boxed product. Our ERP-guided inventory allows complete traceability, reassuring global buyers of our supply chain accountability.
We provide tailored solutions for international distributors, OEM plumbing brands, and large-scale industrial facility operators. Our design engineers utilize CAD/CAM modeling to customize lock brackets, handle heights, engraving styles, and thread configurations (NPT, BSP, or G-threads) matching localized plumbing codes in the Americas, Europe, and Oceania.
Industrial flow control demands vary wildly across sectors, making cross-compatibility a core design priority. Here is how our comprehensive catalog coordinates within complex macro-systems:
Looking ahead, Yuhuan Yongda Fluid Control Co., Ltd. is actively researching the integration of IoT sensors within manual locking mechanisms. Future locking interfaces will not only mechanical isolate the flow but will communicate the valve's status (open, closed, or locked) to a centralized SCADA system via Bluetooth Low Energy (BLE) or LoRaWAN. This feature is highly sought after by smart city infrastructures and offshore chemical platforms where remote confirmation of Lockout/Tagout state is vital.
We are also pursuing the development of highly specialized composite materials that reduce copper dependency, keeping us at the forefront of green manufacturing and environmental standards globally.
Our manufacturing and operational processes comply with international industry standards. Our plant maintains the following active certifications:
A comprehensive system approach featuring smart thermostats, HVAC valves, boilers, and manifold controllers.
Serving as the first line of defense in domestic water sanitation, this heavy-duty filtration unit filters up to 98% of sediment and physical impurities in the inlet pipeline, preserving the lifetime of downstream valves.
Equipped with a precision spherical spool, these valves regulate both cold and hot water inlets for boiler systems, maintaining leak-free performance under continuous thermal stress.
Exhausts gas pockets automatically from heat pump and air-source water heating setups, preventing pump cavitation and ensuring high thermal transmission efficiency.
Blends return fluid with warm water supply, protecting polymer radiant pipes from excessive heat and stabilizing concrete floor slab temperatures.
Serves as the electronic brain of the floor heating system, organizing actuators, mixing pumps, and zone valves based on real-time feedback loops.
Distributes flow rate cleanly across multiple sub-zones, balancing volumetric rates and allowing individual line isolation with manual and thermo-electric control options.
Technical details, compliance questions, and logistics information for global industrial valve importers.
We manufacture using premium brass grades including CW617N, CW614N, and low-lead/lead-free C37700 or DZR brass. These materials comply with European EN 12165 regulations and North American NSF/ANSI 61 drinking water safety standards, preventing lead leaching in public and residential pipelines.
Every single valve undergoes pressure testing using electronic pneumatic sensor setups. Mainline ball valves are tested up to 0.8 MPa with air pressure while submerged to check for seal permeability. Hydrostatic testing is conducted on batch samples to evaluate structural endurance at pressures up to 2.5 MPa (PN25 ratings).
Yes, we offer complete OEM/ODM customization. We can engrave company logos, mark custom pressure limits, and adjust dimensions of the locking plate on ball valves. We also offer customization of padlock holes to match standard shackle sizes used by European and American industrial safety regulations.
Standard OEM valve orders take between 30 to 45 days from technical drawing confirmation and deposit clearance. High-volume order schedules are managed dynamically using our automated production flow, allowing us to keep shipments consistent for regular distributors.
We pack all valves in anti-humidity bags with desiccant packs, which are placed in reinforced internal boxes and wrapped in waterproof stretch film on pallets. This ensures the brass surfaces remain free from moisture and ocean salt oxidation during maritime transit.
Our floor heating thermostatic electric thermal actuators are rated for fluid temperatures up to 100°C (212°F) and ambient operating environments ranging from -5°C to 60°C. They feature IP54 protection ratings and are housed in fire-retardant PC/ABS polymers.
Maintain precise temperature control and safe pressure distribution with our specialty certified plumbing valves.
