Step 4: Materials of Construction

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(Compatibility with the fluid)

Required Data

Corrosiveness
Erosion risk
Operating temperature

Typical Materials

Carbon steel
Stainless steel
Duplex / Super duplex
Alloy steel

Material selection affects pump life and maintenance cost.

Step 1: Define Process Requirements
(Define what the pump must do)Required DataFlow rate (m³/h or GPM)Total Dyn.....
Step 2: Suction Conditions & NPSH Evaluation
(Prevent cavitation)Required DataSuction source (tank, pit, pipeline)Liquid leve.....
Step 5: Mechanical Seal & Sealing System
(Safety and reliability)Required DataFluid toxicity/ flammabilityTemperature and.....
Step 6: Driver Selection (Motor / Turbine)
Required DataRequired power (kW)Voltage / frequencyArea classification (ATEX / h.....
Step 7: Pump Curve & Operating Point Check
(Avoid hydraulic problems)Required DataPump performance curveBest Efficiency Poi.....
Step 8: Standards & Compliance
Required StandardsAPI 610API 682 (seals)ISO / ASME (if applicable)DocumentationD.....
Step 9: Vendor Evaluation & Technical Clarification
Evaluation CriteriaCompliance with datasheetDeviation listPast referencesLead ti.....
Step 10: Final Purchase & Inspection
Required ActionsTechnical approvalFactory Acceptance Test (FAT)Inspection planPr.....