Yongda
Yongda
Explore our foundational brass system components featuring precision forging, strict tolerance parameters, and zero-leakage configurations.
In modern industrial fluid networks, control loops, and HVAC energy distribution networks, the Ported (Po) Check Valve stands as a critical safeguard against reverse flow, water hammer, and thermal cross-contamination. Unlike typical gravity-assisted valves, high-performance OEM Po Check Valves feature engineered cracking pressures, robust guided disc structures, and materials that resist dezincification (DZR) and mechanical fatigue under rapid cycling conditions. They ensure one-way flow under varying differential pressures, acting as passive safety barriers in closed-loop geothermal networks, boiler systems, underfloor heating manifolds, and municipal water delivery lines.
Global procurement teams in Europe and North America face strict regulatory hurdles. High lead levels in brass fittings, mismatching thread dimensions (BSPP vs. NPT vs. metric standards), and erratic cracking pressures cause system failures in commercial HVAC and plumbing assemblies. To achieve operational efficiency, sourcing departments must partner with ISO-certified manufacturers capable of producing custom OEM check valves that meet European CE and American standards, ensuring low pressure drop curves, high flow coefficient (Cv) values, and zero seat leakage at minimal backpressure.
Cast valves often hide subsurface porosity, causing microscopic leak paths under high-pressure gas or fluid applications. Yongda's heavy forging processes press brass blocks at critical temperature points, aligning the internal crystalline structure to handle working pressures up to PN25 (2.5 MPa) and operating temperatures from -20°C to 120°C. Coupled with high-grade sealing options (EPDM for heating, NBR for general plumbing, and Viton for chemical process control), our check valves offer reliable operation in diverse thermal and chemical environments.
Founded Year
Factory Area (sqm)
Advanced Production Tools
Exported Countries
Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.), founded in 1996, is located in Yuhuan, Zhejiang—the renowned "China Valve Capital." This location provides access to a complete supply chain, from brass ingots to specialized surface treatments. With an actual usable manufacturing floor space of over 80,000 square meters, we have optimized our workflow to deliver high-quality products efficiently.
Our production environment is equipped with over 600 sets of advanced manufacturing and testing apparatus, including 80+ specialized machine tools. This precision setup allows us to forge, machine, and inspect our valve bodies in-house, maintaining consistent quality control at every stage of the process.
For custom commercial projects, we translate design specifications into working physical prototypes. Our engineering team uses fluid simulation tools to optimize flow paths, reduce pressure drop, and prevent cavitation inside our ported (Po) check valve and manifold bodies.
By controlling the entire process from mold construction to finish plating (including nickel and chrome plating options), we support global brands with custom labeling, tailored thread configurations, and specified cracking pressures for specialized HVAC, solar thermal, and heat pump loops.
Our plumbing, manifold, and heating components are designed to work together within hydronic system loops, ensuring stable pressures and balanced flow.
The first line of defense in domestic water sanitation, filtering 98% of line impurities.
Controls cold and hot water inlet/outlet lines in boilers via a polished spherical spool.
Automatically expels trapped air pockets in heat pump water heaters to stabilize performance.
Blends hot supply and cold return lines to stabilize fluid temperatures and protect pipes.
Coordinates actuator signals to maintain zone temperatures in residential spaces.
Filters system contaminants and monitors circuit temperatures and line pressures.
Distributes flow evenly across heating loops to maintain consistent room temperatures.
Conducts lifecycle test regimes, burst-pressure validations, and material certification checks.
A Check Valve's primary metric is its reliability under low differential pressure. For many standard designs, low backpressures fail to seal the disc against the seat completely, resulting in minor backflow and pressure drop. Our OEM Po check valves address this with precision-machined guide rods and spring configurations designed for consistent cracking pressure. The disc stays centered to prevent uneven wear on the rubber seat, extending the service life of the valve.
Reducing flow restriction inside a check valve body directly lowers pump energy usage across the system loop. Our internal passages are designed to minimize turbulences, cavitation, and erosion. By optimizing flow path design, we maximize the flow coefficient (Cv), keeping system pressure losses minimal even at high flow rates. This balancing of cracking pressure and seat tight-sealing is a core aspect of our engineering approach.
Our products conform to international fluid management standards. Yuhuan Yongda operates under three core management frameworks: ISO 9001:2015 for quality, ISO 14001:2015 for environmental protection, and ISO 45001:2018 for occupational health. Additionally, our brass manifold systems carry CE certification, demonstrating compliance with European performance and safety criteria. Every production run undergoes automated pressure decay testing, verifying our commitment to zero-leakage performance before shipment.
Browse our catalog of specialized flow-control valves, mixing groups, and plumbing connection accessories.
Combines reliable shut-off capability with a built-in mesh screen to filter particulate matter in compact installations.
Features manual or automated temperature control for balancing heating loops and protecting pipe systems.
Maintains target delivery temperatures by mixing supply and return water in underfloor systems.
Distributes hot water through individual zone loops for domestic and commercial radiant heating installations.
Features a heavy-duty forged brass body designed for outdoor hose connections and utility plumbing setups.
Provides full-bore flow with minimal resistance, suitable for water shut-off in main lines.
Durable, straight brass connections designed for utility meters and clean fluid supply pipes.
Precision-machined NPT-standard barb fittings built for industrial fluid lines and hose connections.
Below is our full manufacturing index of custom brass fittings, bypass valves, and manifold accessories available for global OEM sourcing.
Detailed technical answers addressing core design challenges, material selections, and pricing structures for industrial procurement teams.
Explore our range of compression fittings, mixing valves, and threaded connection options designed for reliable system integration.
