Lesson 1Positive-displacement and specialty pumps: progressive cavity, diaphragm, peristaltic, magnetic-driveCover positive-displacement an specialty pumps use when centrifugal ones nuh suit. Explain progressive cavity, diaphragm, peristaltic, an magnetic-drive pumps, focus pon flow control, shear, an containment.
When to choose positive-displacement pumpsProgressive cavity pumps for viscous slurriesDiaphragm pumps for chemicals and sludgesPeristaltic pumps for dosing and slurriesMagnetic-drive and canned-motor pump usesLesson 2Selection criteria by fluid properties: viscosity, solids content/size, abrasiveness, corrosivity, temperatureExplain how viscosity, solids size an loading, abrasiveness, corrosivity, an temperature rule pump type, speed limits, clearances, an sealing. Stress screen data sheets an lab results fi avoid chronic failures.
Viscosity impact on pump type and efficiencyHandling dissolved, fibrous, and granular solidsAssessing abrasiveness and erosion mechanismsCorrosivity, pH, and chemical compatibilityTemperature limits, vapor pressure, and coolingLesson 3Overview of centrifugal pump families: end-suction, vertical inline, split-case, multistageIntroduce main centrifugal pump families an dem hydraulic envelopes. Compare end-suction, vertical inline, split-case, an multistage designs fi pressure range, efficiency, footprint, an typical industrial services.
End-suction overhung pumps and standardsVertical inline pumps for space-constrained plantsAxially split-case pumps for high flowsMultistage pumps for high-pressure servicesHydraulic envelopes and selection guidelinesLesson 4Wear-resistant materials and coatings for abrasive slurries: rubber linings, hardfacing, ceramic overlaysReview wear-resistant materials an coatings fi abrasive slurries. Compare rubber linings, high-chrome irons, hardfacing, an ceramic overlays, wid guidance pon velocity limits, particle shape, an maintenance.
Rubber-lined casings and impellersHigh-chrome white iron and alloysHardfacing of wear rings and volutesCeramic tiles, sleeves, and overlaysVelocity control to limit erosion ratesLesson 5Typical pump driver and coupling choices: electric motors, VFDs, direct-coupled, gearboxes, flexible couplingsDescribe common pump drivers an couplings, including electric motors, VFDs, gearboxes, an flexible couplings. Link driver choice to speed, starting torque, control needs, an mechanical reliability in industrial duty.
Electric motor selection and enclosure typesUsing VFDs for control and energy savingsGearboxes and belt drives for speed matchingDirect versus flexible coupling arrangementsAlignment, vibration, and torsional issuesLesson 6Material selection and corrosion compatibility: cast iron, 304/316 stainless, duplex, Hastelloy, PTFE-lined and engineered plasticsExplain material selection fi corrosion an compatibility. Compare cast iron, 304/316 stainless, duplex, Hastelloy, PTFE-lined, an engineered plastics, using fluid composition, temperature, an chloride level.
Using corrosion charts and lab dataCast iron limits and common failures304 versus 316 stainless in chloridesDuplex and nickel alloys for severe dutyPTFE-lined and plastic pumps for chemicalsLesson 7NPSH considerations and cavitation avoidance for each service typeDetail NPSH concepts an cavitation risks fi different services. Teach how fi read NPSHr curves, estimate NPSHa, an adjust layout, temperature, an speed fi avoid cavitation damage an performance loss.
NPSH definitions, NPSHr versus NPSHaReading NPSH curves on pump datasheetsEstimating NPSHa from system geometryCavitation symptoms and damage patternsDesign changes to improve NPSH marginLesson 8Sealing options by fluid risk: mechanical seals, packing, glandless and magnetic drive seals, seal flush plansExplain sealing strategies base pon fluid toxicity, flammability, an leakage tolerance. Compare packing, single an double mechanical seals, glandless an magnetic-drive designs, an API-style seal flush plans.
When packing is acceptable or unsuitableSingle versus double mechanical sealsSeal face materials and elastomer choicesGlandless and magnetic-drive containmentSeal flush plans and support systems basicsLesson 9Slurry and solids-handling pump types: heavy-duty slurry pumps, recessed-impeller, vortexFocus pon slurry an solids-handling pump designs. Compare heavy-duty slurry pumps, recessed-impeller, an vortex pumps, highlighting wear resistance, solids passage, efficiency tradeoffs, an dewatering uses.
Slurry classification and particle size effectsHeavy-duty slurry pump hydraulics and linersRecessed-impeller and vortex pump featuresSolids-handling limits and derating rulesTypical mining and wastewater applicationsLesson 10Sizing basics: matching flow and head to pump curves and system curve conceptsIntroduce sizing basics using pump an system curves. Show how fi match required flow an head, account fi friction an static lift, an position di duty point fi efficiency, reliability, an future flexibility.
Defining required flow, head, and duty rangeBuilding system curves from piping lossesLocating the duty point on pump curvesEvaluating efficiency and power at dutyAllowing for future capacity and fouling
