Laizhou Dongsheng Valve Co., Ltd.
About
Laizhou Dongsheng Valve Co., Ltd. is a Chinese industrial valve manufacturer founded in 2002 in Shahe Town, Laizhou City, Shandong Province. Operating as an integrated manufacturing, sales, and R&D enterprise, the company has developed over 500 product specifications across its valve portfolio and exports to more than 70 countries, primarily serving European and American markets. Dongsheng Valve's core strength lies in its comprehensive check valve range, offering eight distinct configurations: wafer single-plate, wafer dual-plate, wafer lift, wafer silent, flanged swing, flanged silent, flanged ball-check, and thin single-plate variants — each designed for specific backflow prevention requirements in different pipeline conditions. Beyond check valves, the company manufactures butterfly valves for throttling and isolation, weir-type and straight-through concealed-stem diaphragm valves for corrosive and slurry service, ball valves for tight shut-off, flanged gate valves for full-bore isolation, Y-type strainers for pipeline debris protection, rubber flexible joints for vibration absorption and misalignment, foot valves for pump prime maintenance, and filter screens. Their valves serve applications spanning water supply and drainage, water purification, petroleum, chemical processing, mining, steam systems, metallurgy, urban heating, and food-grade fluid handling. Dongsheng Valve maintains quality management systems for international compliance and provides custom valve solutions for specialized fluid handling requirements.
Key Products
Compact non-return valves with a single swinging disc for preventing backflow in pipeline systems, installed between flanges.
Non-return valves with two half-discs that split flow, offering reduced pressure drop and faster closing compared to single-plate designs.
Axial-flow check valves where a disc lifts off its seat to allow forward flow and drops back to prevent reverse flow.
Spring-loaded non-return valves that close quickly and silently to prevent water hammer and reverse flow.
Full-ported non-return valves with a swinging disc on a hinge pin, suitable for large-diameter pipeline applications.
Spring-actuated non-return valves with flanged ends for quiet, slam-free operation in water and wastewater pumping systems.
Non-return valves using a ball that lifts off a seat to permit forward flow and seats to block reverse flow.
Lightweight, compact non-return valves with a single disc for tight-space installations between flanges.
Quarter-turn valves with a rotating disc for throttling or isolating flow in pipelines.
Valves using a flexible diaphragm to regulate flow, with a weir-type body suitable for corrosive and abrasive fluids.
Full-bore diaphragm valves with concealed stem for clean or slurry service providing unobstructed flow when open.
Quarter-turn valves with a spherical bore for tight shut-off in water, steam, and industrial fluid systems.
Rising or non-rising stem gate valves with flanged ends for full-bore isolation in pipeline systems.
In-line filtration devices that remove debris and particles from pipeline flow to protect downstream equipment.
Elastomeric expansion joints that absorb vibration, thermal movement, and misalignment in piping systems.
Non-return valves installed at the inlet of suction pipes to maintain pump prime and prevent backflow.
Perforated or mesh elements that strain solids from fluid flow in industrial and water treatment applications.
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