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E-BULLETINDECEMBER 201943.00-1DeZURIK BAW AWWA BUTTERFLY VALVESwww.dezurik.com

Defining the DeZURIK DifferenceDeZURIK HistoryAdvanced Machining CapabilitiesDeZURIK is an innovative global leader for the waterand wastewater treatment industries, recognizedworldwide for high quality and superior performance.DeZURIK’s solid modeling CAD software allowsparts to be di rectly transferred to CAM modulesfor machine fixture design and NC programming.AWWA Butterfly Valves are manufactured with themost sophisticated machining centers available.Milling, drilling, boring, and tapping operations areperformed on fully automated machine centers thatperform sequential, error-free operations. DeZURIK’sinvestment in state-of-the-art machining centersensures products of consistently high quality.While DeZURIK provides innovative valves andrelated equipment for water and wastewater,DeZURIK eagerly responds as new industriesdevelop and existing industries progress. Ourknowledgeable engineers are quick to respondwith groundbreaking technological advances. Theycontinue to develop a wide range of productsfocusing on water and wastewater treatment, pulpand paper, chemical and petrochemical, power,mining and other process industries. Some of ourproducts increase accuracy. Others assure durabilityor reliability. All of our products work to enhance ourcustomer’s profitability.CertificationFor our latest certifications, please visit our web sitewww.dezurik.com.Leading Edge Design SoftwareComputer Aided Design systems are used byresearch and development engineers throughoutthe product development cycle. DeZURIK utilizesleading edge solid modeling software whichallows product designers to view valve parts andassemblies three dimensionally. The 3D models areelectronically transferred to Finite Element Analysissoftware where stress and deflection calculationsare performed. This software allows designers tovisualize deflection of critical parts under extremeloads. Proper relief and safety factors are included inevery valve design to ensure long performance life.2 2019 DeZURIK, Inc.Rubber & Elastomer CompoundingDeZURIK formulates and handcrafts rubber tocontrol quality on critical components. Over 50 yearsof pressure/temperature rubber-molding experienceassures the AWWA seat design provides long,maintenance-free service. DeZURIK compounds itsown resili ent seat materials to assure low operatingtorque and protection from pipeline corrosion andabrasion from sedimentation deposits.Prototype Design TestingValve prototypes of sizes up to 36" (900mm)are tested in DeZURIK’s flow laboratory. Flowranges from a few cubic centimeters per minute to72,000 gallons per minute can be tested. Computercontrolled testing automatically sets flow, mon itorstemperatures, takes sample readings, and analyzesinformation. Before re lease, beta test sites are usedto gain actual field experience. Valves are tested upto 10,000 cycles per AWWA C504 specifications.Proof of design testing certification is available.www.dezurik.com

ApplicationsDeZURIK AWWA Butterfly Valves are designedfor applications throughout water and wastewatertreatment plants, water distribution systems, powerplants, and industrial plants. AWWA Butterfly Valvescan be applied in applications demanding high-qualityand thoroughly tested valves which offer many yearsof trouble-free service.Pump Check Control SystemsPump check control systems, utilizingAWWA Butterfly Valves, are available inmany different models.Production TestingEach valve is given a hydrostatic, seat leakageand perform ance test per AWWA C504 beforeit is shipped.www.dezurik.com3

3–20" (80–500mm) DesignFeatures for Years of Trouble-Free ServiceBody StylesFlanged, ASME B16.1 Class 125,3–20" (80–500mm), Valve Class 150BFlanged, ASME B16.1 Class 125,3–20" (80–500mm), Valve Class 250B*Flanged, ASME B16.1 Class 250,3–18" (80mm–450mm), Valve Class 250B*Mechanical Joint, ANSI/AWWA C111/A21.11, 4–20"(100–500mm), Valve Class 150BMechanical Joint, ANSI/AWWA C111/A21.11, 4–20"(100–500mm), Valve Class 250B**These valve classes meet or exceed thefull intent of AWWA C504 including design,material, and testing requirements.Corrosion Resistant ShaftStainless steel shafts provide corrosionresistance in bearing and packing journalareas to ensure long bearing and packing life.Standard shaft materials include 304, 316,and 17-4 PH stainless steel.Self-Compensating Shaft SealsShaft seals are self-compen sat ing, V-type packing.DeZURIK uses a minimum of four sealing rings. Thisproven multi-ring sealing technology offers reliabilityand continuous self-adjustment.Long Life, Low Friction BearingsUpper and lower journal shaft bearings are designedto provide high compressive strength, low frictionand require no lubrication.4www.dezurik.com

3–20" (80–500mm) DesignFully Rubber Lined BodyA fully rubber lined body is standard, eliminatingthe need for inner body coating, and protectingthe body against corrosion buildup.Integrity of the ProvenMolding ProcessThe rubber bonding process used on DeZURIKAWWA Butterfly Valves is proven by more than 50years of field experience. AWWA C504 re quirestesting of the bonding process per ASTM D429,method B. The test requires a 1" (25mm) wide stripof rubber to withstand a minimum 75 lbs. pull force(at a 90 angle) before tearing away from the valvebody. During destructive testing, the rubber musttear before the bond between the rubber seat andmetal valve body gives way, demonstrating thatthe bond is stronger than the rubber. Based onextensive experience and proof of design testing,DeZURIK can assure that a molded-in body seatremains maintenance-free for the life of the valve.Choice of Seat MaterialsStandard seat materials in clude AcrylonitrileButadiene (NBR) for water service and EPDMfor high-temperature applications such as airblower lines.4 Sealing SurfaceThe spherical sealing surface, molded intothe valve seat, provides constant interferencebe tween the sealing surface and the discedge for a full 4 sealing range. This allows theactuator to be adjusted within the correct sealingrange while the valve is under pressure and flow.Molded-In Body SeatThe pressure/temperature molding process usedon AWWA Butterfly Valves provides a long-lasting,mainten ance-free seat. DeZURIK’s molded-inbody seat lasts far beyond the 10,000 cyclesre quired by AWWA C504. The molded seat-in-bodydesign provides: Uniform rubber thickness. Consistent interference between the rubber seatingsurfaces and the stainless steel disc edge. Tight tolerance control on critical seat dimensions.www.dezurik.com5

3–20" (80–500mm) DesignDisc LocatorsAn innovative, molded-in, disc-centering devicealigns the disc in the seat, providing a positive sealand longer seat life. Disc hubs, supported by thelocators, ensure disc location accuracy. The offsetstyle disc de sign means disc-alignment locators areseparate from the sealing surface, extending valveseat life.Proven Disc-ToShaft PinningAll DeZURIK disc-toshaft pinning connectionsconform to AWWA C504.Disc-to-shaft pinning isprovided by a stainlesssteel torque screw on sizes3–12" (80–300mm). Sizes14–20" (350–500mm) utilizea tangential pin whichis locked in place with astainless steel set screw.High Temperature ApplicationsFor operating temperatures to 290 F (143 C), EPDMseat material and packing, high temperature bearingsand high temperature paint on the disc are availableas standard options. Other seat materials for highertemperatures available on application.6www.dezurik.com

3–20" (80–500mm) DesignIntegral Shaft Bearing SealsTo ensure all components of the valve remainmaintenance-free, the molded-in body seat andbody liner contain integral shaft bearing seals inthe upp er and lower journals. These seals protectbearing journal areas against sedimentation, mineraldeposits, and corrosion particles — all of which candamage bearings and shorten valve life.Seat-In-Body vs. Seat-On-DiscDeZURIK’s AWWA Butterfly began its evolutionover 40 years ago. For over 25 years, a stationaryrubber seat locat ed in the valve body has beenthe standard. This feature is fundamental to thelong-term per formance of the valve.After years of service, water dis tribution valves andpipe lines (regardless of material) suffer the effectsof abrasive corrosion and tuberculation buildup.When the rubber seat of a butterfly valve is locatedon the moving disc edge, it will erode or tear awayas it plows its way through line buildup, causing thevalve to leak. With a rubber seat-in-body design,the stainless steel disc pro vides the resistancenecessary to plow through line buildup withoutseat-on-disc edge ainlessSteel DiscEdgeDiscOffset Disc DesignThe offset disc provides an un interrupted 360 sealing sur face. The sealing surface is not interruptedby the valve shaft and does not haveany continuous contact points between the rubberseat and the disc edge. This results in a longerseat life.Stainless SteelDisc EdgeSolid 316 stainlesssteel disc edgeprovides thecorrosion and abrasionresistance essentialfor long-lasting,mainten ance-freeservice. The stainlesssteel disc edge ison all disc materialsincluding iron, carbon steeland aluminum bronze discs.www.dezurik.com7

24” (600mm) and Larger DesignQuality Features for Superior PerformanceBody StylesFlanged, ASME B16.1 Class 125,24–120" (600–3000mm), Valve Class 150BFlanged, ASME B16.1 Class 125,30–72" (750–1800mm), Valve Class 75B*Flanged, ASME B16.1 Class 125,30–48" (750–1200mm), Valve Class 25A*Flanged, ASME B16.1 Class 125,20–54" (600–1400mm), Valve Class 250B*Flanged, ASME B16.1 Class 250,24–48" (600–1200mm), Valve Class 250B*Mechanical Joint, ANSI/AWWA C111/A21.11,24–48" (600–1200mm), Valve Class 150BMechanical Joint, ANSI/AWWA C111/A21.11,24–48" (600–1200mm), Valve Class 250B**These valve classes meet or exceed the fullintent of AWWA C504 including design,material, and testing requirements.Corrosion Resistant Shaft MaterialStandard shaft materials in clude 304, 316, and 17-4PH stainless steel, providing the corrosion resistancein the bearing and packing journal areas necessary toensure long bearing and packing life.Stainless Steel Disc EdgeSolid 316 stainless steel disc edges providea corrosion and abrasion resistant seatingarea essential for long-lasting, maintenancefree service.Choice of Seat MaterialsStandard seat materials include AcrylonitrileButadiene (NBR) for water service and EPDMfor high temperature applications such as airblower lines.High Temperature ApplicationsFor operating temperatures to 290 F (143 C), EPDMseat material and packing, high temperature bear ingsand high temperature paint on the body and discare standard. Other seat materials for highertemperatures available on application.Positive Disc LocatorsIncorporated into the lower shaft is an adjustablethrust bearing assembly which holds the discposition in all possible installation orientations.This thrust bearing absorbs forces from the discweight, internal hydraulics and axial shaft loads.8www.dezurik.com