Yongda
Yongda
Explore our premium grade selection of automatic relief systems, compression couplings, and professional brass distribution manifolds engineered for water, gas, and underfloor HVAC systems.
Polyethylene (PE) piping has revolutionized global fluid distribution system technologies due to its exceptional chemical resistance, high flexibility, and lower installation overheads. However, connecting PE pipes to municipal utility networks, distribution hubs, and temperature-controlled manifold systems requires high-integrity mechanical shut-off interfaces. This is where high-precision PE Ball Valves and heavy-duty Brass Compression Fittings play an indispensable role.
Industrial operations require components that can sustain heavy mechanical stresses without compromising seal integrity. Premium compression fittings, engineered alongside robust ball valves, prevent pull-out failure, resist corrosive elements, and minimize micro-leakages under continuous dynamic pressure waves. For civil developers and HVAC contractors alike, securing standard-certified plumbing components translates into long-term infrastructure reliability, lowered localized failure rates, and decreased operational maintenance costs.
The global shift towards clean drinking water distribution and underfloor heating (HVAC) systems has created a massive demand for corrosion-free PE piping lines. High-density PE (HDPE) lines are widely used, prompting manufacturers to specialize in DZR (Dezincification Resistant) brass transition interfaces that withstand harsh underground and chemical environments.
Smart building architectures, integrated municipal flow controls, and eco-friendly regulations are driving manufacturers to create lead-free, non-toxic, and highly recyclable alloy assemblies. Automation of mixing and venting networks has also surged as modern homes require smart thermostat interfaces linked with energy manifolds.
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was founded in 1996 and is strategically located in the "China Valve Capital" – Yuhuan, Zhejiang. As an industry-leading, professional plumbing valve enterprise, we focus closely on comprehensive product design, engineering development, automated production, and global export sales.
Our expansive production catalog is categorized into three primary high-performance categories: brass valves, precision fittings, and HVAC distribution systems. Our products are positioned globally in the middle and high-grade segments, highlighting advanced ecological and environmental protection advantages. Because of this focus on safety and performance, our systems are highly favored by industrial buyers and consumers across North America, Europe, and other strictly regulated markets.
Cokaren is our flagship brand focused on manufacturing products with a highly refined industrial appearance and superior performance. Guided by the brand promise of "keep flowing, keep warming", we seek to deliver premium plumbing and HVAC components that make modern residences safe, energy-efficient, and comfortable. Cokaren is dedicated to active system innovation to establish itself as a highly dynamic, world-class fluid technology brand.
Yuhuan Yongda Fluid Control maintains a state-of-the-art facility operating over 600 sets of advanced manufacturing and testing devices. This advanced machinery setup includes more than 80 specialized, high-precision machining units, allowing our team to customize solutions according to specific regional standards and technical requests.
Quality is integrated into every step of our manufacturing. The company has passed and rigorously maintains the following international systems:
Under our strict quality policy of "Fine work, no leakage", each batch undergoes strict stress-testing and dimensional verification. This ensures that every brass valve, compression elbow, and piping joint that leaves our assembly floor delivers dependable, leak-free operation over a multi-decade life expectancy.
A complete thermodynamic and fluid control setup requires seamless coordination between filtration, venting, flow diversion, and smart manifold balancing. Discover our integrated HVAC and potable water delivery solutions.
Acts as the first line of defense in domestic water sanitation, removing up to 98% of physical impurities in the pipeline to protect downstream appliances.
Specifically engineered to control cold and hot water flow paths in commercial boilers, utilizing a high-durability spherical spool mechanism.
Automatically discharges accumulated pockets of air within the hydronic loop to ensure balanced water pressure and prevent system lockups.
Blends return hot and cold water streams dynamically, maintaining stable water temperatures to prevent thermal degradation of floor piping.
An intelligent control console designed to combine multiple room temperature sensors and regulate flow rates across zones.
Multifaceted control units built to filter particulate matter, bleed air bubbles, and measure line temperatures/pressures at the manifold.
Distributes the main incoming water flow efficiently into distinct branch circuits while integrating manual or automatic balancing options.
Providing high-durability connections between polyethylene lines and brass control valves requires deep engineering specialization.
Standard brass alloys can suffer from zinc leaching when exposed to aggressive soft water or chemical lines. Our premium DZR brass components maintain their structural integrity over time, avoiding catastrophic thread degradation and micro-fracturing under high-pressure loads.
By employing premium EPDM/NBR rubber dual O-ring profiles inside our Series PFB5 compression fittings, we achieve double-redundancy seal protection. This keeps pipelines leak-free even under high structural vibration or slight alignment shifts during underground settling.
Our ball valves feature full-bore internal paths. This reduces localized turbulence, minimizes head loss (pressure drop), and limits power requirements on central circulation pumps.
Get professional technical insights on design parameters, structural compatibility, and installation rules for PE compression valves.
Brass compression fittings allow for quick mechanical installations without needing specialized electrofusion or butt-fusion heat welding tools. They offer excellent mechanical tensile strength (pull-out resistance), withstand soil movement, and provide direct transition threads to couple standard metal valves and manifolds with PE pipelines.
Yes. However, it is highly recommended to use Dezincification Resistant (DZR) brass alloys or externally protected nickel-plated fittings to guard against corrosive elements in moist soils. Using a clean sand surround during backfilling also helps protect the connection from localized rock impingement.
Polyethylene expands and contracts significantly more than brass when temperature changes. To prevent leaks, our brass compression fittings use a deep internal socket and a sharp grip ring. This design firmly anchors the PE pipe, keeping the seal secure even as the pipe naturally expands and contracts.
Most premium brass compression joints are engineered to support pressure levels up to PN16 (16 bar or approximately 232 PSI) under standard operating temperatures. This makes them ideal for both municipal main distribution lines and domestic plumbing systems.
Yes. Water systems can carry small particles of rust and mineral scale. Over time, these impurities can build up on the venting mechanism's float or seat, potentially causing minor weeping. Installing an inline filter, like the Y9021, and performing annual cleaning will ensure the venting valve continues to operate reliably.
Examine our full collection of industrial brass pipe connectors, heavy-duty utility hose unions, check valves, and temperature control mixing shunts.
