Woosung Valve Co., Ltd. is a specialized manufacturer dedicated to the development and production of check valves since its establishment in 1981, supplying products to various domestic and international industries including industrial, construction, and shipbuilding sectors under its unique 'Pan Check Valve' brand.WoosungValveCo.,Ltd.isaspecializedmanufacturerdedicatedtothedevelopmentandproductionofcheckvalvessinceitsestablishmentin1981,supplyingproductstovariousdomesticandinternationalindustriesincludingindustrial,construction,andshipbuildingsectorsunderitsunique'PanCheckValve'brand.
Key Products/TechnologiesKeyProducts/Technologies
Dual Disc Check Valve (Model: DD): A double-disc check valve applicable to various fluids such as oil, water, air, steam, and seawater, supporting various ratings like JIS 10K, JIS 20K, Class 150~2500, and AWWA C207, with material options including cast iron, stainless steel, duplex, and nickel-aluminum-bronze.DualDiscCheckValve(Model:DD):Adouble-disccheckvalveapplicabletovariousfluidssuchasoil,water,air,steam,andseawater,supportingvariousratingslikeJIS10K,JIS20K,Class150~2500,andAWWAC207,withmaterialoptionsincludingcastiron,stainlesssteel,duplex,andnickel-aluminum-bronze.
Non-Slam Nozzle Check Valve (Models: CNZ TYPE, PCN TYPE, SNF TYPE, DNF TYPE, WNF TYPE): Characterized by low pressure loss during valve opening due to its streamlined nozzle structure, capable of producing large sizes from 1 inch (25A) to 60 inches (1500A), with various material applications such as carbon steel, stainless steel, and duplex.Non-SlamNozzleCheckValve(Models:CNZTYPE,PCNTYPE,SNFTYPE,DNFTYPE,WNFTYPE):Characterizedbylowpressurelossduringvalveopeningduetoitsstreamlinednozzlestructure,capableofproducinglargesizesfrom1inch(25A)to60inches(1500A),withvariousmaterialapplicationssuchascarbonsteel,stainlesssteel,andduplex.
Tilting Check Valve (Model: TL): A valve with an inclined seat surface and a sealing structure based on the disc's self-weight, offering various sizes from 80mm (3 inches) to 700mm (28 inches), supporting wafer flange or lug connections, and JIS 10K, Class 150 ratings.TiltingCheckValve(Model:TL):Avalvewithaninclinedseatsurfaceandasealingstructurebasedonthedisc'sself-weight,offeringvarioussizesfrom80mm(3inches)to700mm(28inches),supportingwaferflangeorlugconnections,andJIS10K,Class150ratings.
Swing Pan Check Valve (Models: SP, SPS): A wafer-type valve covering a wide range of sizes from 1½ inches (40A) to 40 inches (1000A), with pressure specifications of JIS 10K and Class 150 (PN20), utilizing various body and disc materials such as stainless steel, carbon steel, and nickel-aluminum-bronze.SwingPanCheckValve(Models:SP,SPS):Awafer-typevalvecoveringawiderangeofsizesfrom1½inches(40A)to40inches(1000A),withpressurespecificationsofJIS10KandClass150(PN20),utilizingvariousbodyanddiscmaterialssuchasstainlesssteel,carbonsteel,andnickel-aluminum-bronze.
5-Way Union Check Valve (Models: RG, NSF): A screw-end valve primarily used in inverter pump, booster pump, and electronic control pump lines, available in smaller sizes from 1 inch (25A) to 1½ inches (40A), featuring a stainless steel body, POM valve unit, and EPDM/Viton/NBR seat materials.5-WayUnionCheckValve(Models:RG,NSF):Ascrew-endvalveprimarilyusedininverterpump,boosterpump,andelectroniccontrolpumplines,availableinsmallersizesfrom1inch(25A)to1½inches(40A),featuringastainlesssteelbody,POMvalveunit,andEPDM/Viton/NBRseatmaterials.
Foot Valve: A specialized check valve installed at the end of a pump suction line to prevent backflow and maintain pump priming, including a strainer to prevent large debris, suitable for water sources like wells, ponds, and lakes, and various applications such as HVAC, car wash systems, irrigation, sump pumps, and rural fire protection systems.FootValve:Aspecializedcheckvalveinstalledattheendofapumpsuctionlinetopreventbackflowandmaintainpumppriming,includingastrainertopreventlargedebris,suitableforwatersourceslikewells,ponds,andlakes,andvariousapplicationssuchasHVAC,carwashsystems,irrigation,sumppumps,andruralfireprotectionsystems.
Pan Check Valve (Models: PC, PA, ANA, CV, PCS, UCV, PAS): A spring-compressed valve designed to prevent water hammer and allow adjustable opening pressure, featuring a thin, small, and lightweight design for easy handling, suitable for both horizontal and vertical piping installations, primarily used for liquid (incompressible fluid) applications.PanCheckValve(Models:PC,PA,ANA,CV,PCS,UCV,PAS):Aspring-compressedvalvedesignedtopreventwaterhammerandallowadjustableopeningpressure,featuringathin,small,andlightweightdesignforeasyhandling,suitableforbothhorizontalandverticalpipinginstallations,primarilyusedforliquid(incompressiblefluid)applications.
Core AdvantagesCoreAdvantages
Over 40 years of specialized development and production know-how in check valves as a single product category.Over40yearsofspecializeddevelopmentandproductionknow-howincheckvalvesasasingleproductcategory.
Accumulated extensive experience and technical expertise across a wide range of domestic and international industries, including industrial, construction, shipbuilding, plant, power generation, oil & gas, water treatment, semiconductor, and more.Accumulatedextensiveexperienceandtechnicalexpertiseacrossawiderangeofdomesticandinternationalindustries,includingindustrial,construction,shipbuilding,plant,powergeneration,oil&gas,watertreatment,semiconductor,andmore.
A flexible production system for small-batch, multi-product manufacturing, with the capability to design and produce custom valves ranging from 5mm to over 2m in diameter to meet specific customer requirements.Aflexibleproductionsystemforsmall-batch,multi-productmanufacturing,withthecapabilitytodesignandproducecustomvalvesrangingfrom5mmtoover2mindiametertomeetspecificcustomerrequirements.
High brand recognition for its proprietary 'Pan Check Valve' brand, which has become a common noun within the industry.Highbrandrecognitionforitsproprietary'PanCheckValve'brand,whichhasbecomeacommonnounwithintheindustry.
Technical strengths in product design, including minimized water hammer, lightweight and compact construction, and versatile installation options (horizontal/vertical) for Pan Check Valves.Technicalstrengthsinproductdesign,includingminimizedwaterhammer,lightweightandcompactconstruction,andversatileinstallationoptions(horizontal/vertical)forPanCheckValves.
Continuous investment in research and development (R&D) and a customer-centric management philosophy aiming for a customer dissatisfaction rate below 0.03%.Continuousinvestmentinresearchanddevelopment(R&D)andacustomer-centricmanagementphilosophyaimingforacustomerdissatisfactionratebelow0.03%.
Possession of multiple quality and technology-related certifications and recognition as a Busan Metropolitan City Strategic Industry Leading Company in 2018.Possessionofmultiplequalityandtechnology-relatedcertificationsandrecognitionasaBusanMetropolitanCityStrategicIndustryLeadingCompanyin2018.
Capability to supply products with a strong combination of quality, on-time delivery, and price competitiveness in the global market.Capabilitytosupplyproductswithastrongcombinationofquality,on-timedelivery,andpricecompetitivenessintheglobalmarket.
Target IndustrieTargetIndustrie
Industrial Plants: Oil & gas, petrochemical, power generation, desalination, and water treatment plants.IndustrialPlants:Oil&gas,petrochemical,powergeneration,desalination,andwatertreatmentplants.
Construction and Civil Engineering: Water and sewage systems, building piping, and sewage backflow prevention systems.ConstructionandCivilEngineering:Waterandsewagesystems,buildingpiping,andsewagebackflowpreventionsystems.
Shipbuilding and Marine: Ship construction and offshore plant facilities.ShipbuildingandMarine:Shipconstructionandoffshoreplantfacilities.
General Machinery: Pumps, boilers, compressors, and various other mechanical equipment.GeneralMachinery:Pumps,boilers,compressors,andvariousothermechanicalequipment.
Specialized Industries: Semiconductor, medical, robotics, and food industries.SpecializedIndustries:Semiconductor,medical,robotics,andfoodindustries.
Residential and Agricultural: HVAC systems, car wash systems, ponds, pools, wells, irrigation systems, and rural fire protection systems.ResidentialandAgricultural:HVACsystems,carwashsystems,ponds,pools,wells,irrigationsystems,andruralfireprotectionsystems.
Major MarketsMajorMarkets
China, JapanChina,Japan
European regionEuropeanregion
USAUSA
Certifications/PatentsCertifications/Patents
Possession of various trademark designs and patents related to its check valves.Possessionofvarioustrademarkdesignsandpatentsrelatedtoitscheckvalves.
KOSHA approval for Safety Valve (GLI1 10-AV2BL-0235, GLI3 12-AV2BL-0010).KOSHAapprovalforSafetyValve(GLI110-AV2BL-0235,GLI312-AV2BL-0010).
Holding multiple quality and technology-related certifications.Holdingmultiplequalityandtechnology-relatedcertifications.
Selected as a Busan Metropolitan City Strategic Industry Leading Company in 2018.SelectedasaBusanMetropolitanCityStrategicIndustryLeadingCompanyin2018.