The Comprehensive Industrial Pump Selection Manual
An interactive, engineering-verified selection guide for process engineers, plant operators, and procurement teams. Match duty conditions across 20+ industries, 21+ fluid types, and 10+ pump technologies with verified material compatibility and failure mode analysis.
1. Industrial Pump Technologies Overview
Core HydraulicsUnderstanding pump operating principles is critical to preventing hydraulic mismatch, premature mechanical seal failure, and excessive energy consumption.
Air-Operated Double Diaphragm (AODD)
Positive displacement design driven by compressed air. Inherently dry-run capable, self-priming up to 7m, shear-sensitive fluid friendly, and explosion-proof (ATEX compliant).
Centrifugal Process Pumps
Rotodynamic pumps converting rotational energy into hydrodynamic energy. Optimal for continuous high-flow, low-viscosity liquid movement and circulation loops.
Submersible Pumps
Close-coupled motor and pump operating submerged directly inside sumps, pits, or tanks. Eliminates suction lift constraints and self-priming complications.
Industrial Lined Valves
Engineered PFA, FEP, and PP/PVDF lined valves for aggressive, ultra-corrosive chemical isolation, flow throttling, and back-flow prevention.
Rotary Lobe & Sanitary Pumps
Gentle positive-displacement pumping with zero shear damage. Ideal for dairy, food processing, pastes, pharmaceuticals, and CIP/SIP cleaning circuits.
Dosing & Metering Pumps
High-precision chemical injection with repeatable micro-volume stroke adjustment for water treatment, acid-base dosing, and boiler feed conditioning.
2. Sando Rotary Equipment Product Catalog
Direct Product ModelsClick any product model below to view complete dimensional drawings, flow curves, wetted material specifications, and request immediate quotations:
| Model / Series | Category | Wetted Metallurgy / Materials | Primary Use Cases | Actions |
|---|---|---|---|---|
| AOD 50 PF Metallic | Metallic AODD (1/2") | SS-316, Aluminium, Cast Iron | Chemical transfer, batch dispensing, solvent circuits | View Specs → |
| AOD 400 PF Metallic | Metallic AODD (1-1/2") | SS-316, Hastelloy, Cast Iron | High-volume chemical transfer, tanker unloading, filter press feed | View Specs → |
| AOD 150 PF Non-Metallic | Non-Metallic AODD | Polypropylene (PP), PVDF, PTFE | Hydrochloric, Sulphuric, Nitric acid transfer & electroplating | View Specs → |
| Magnetic Drive Pump | Centrifugal (Seal-less) | PP, PVDF, ETFE Lined | Zero fugitive emissions, hazardous, toxic, & high-purity chemical loops | View Specs → |
| Chemical Process Pumps | Centrifugal (ISO/ANSI) | SS-316L, Alloy 20, Hastelloy, CI | Continuous process circulation, reaction loop, bulk storage transfer | View Specs → |
| CSP Self-Priming Pumps | Centrifugal Self-Priming | Cast Iron, Stainless Steel | Tanker loading/unloading, pit evacuation without foot valves | View Specs → |
| Portable Submersible Pump | Submersible | Cast Iron, SS Motor Casing | Basement dewatering, construction sump clearing, site drainage | View Specs → |
| Sewage Submersible Pump | Submersible Non-Clog | Cast Iron with Vortex / Cutter Impeller | Raw sewage, municipal lift stations, fibrous effluent handling | View Specs → |
| Electric Double Diaphragm (EODD) | Electric Positive Displacement | Aluminium, SS-316, PP | Energy-efficient alternative to AODD where air compressor costs are high | View Specs → |
| Rotary Lobe Pump | Hygienic Positive Displacement | SS-316L, Electro-polished | Food, dairy, syrups, pastes, shear-sensitive polymers, CIP systems | View Specs → |
| Gear Pump - AERN Series | Positive Displacement Gear | Graded Cast Iron, Carbon Steel | Lube oils, fuel oil, resins, bitumen, viscous hydrocarbons | View Specs → |
| Dosing & Metering Pumps | Metering / Injection | PP, PVDF, SS-316, PTFE | Accurate chemical dosing, boiler feedwater chemicals, flocculants | View Specs → |
| Barrel & Drum Pump | Drum Decanting | PP, PVDF, SS-316, Aluminium | Emptying 200L barrels, carboys, and IBC totes cleanly and safely | View Specs → |
3. Explore by Industry & Application
Application MatrixChemical & Petrochemical
Acids, alkalis, solvents, polymers, and thermic oils. Compatibility must hold across entire temperature profile.
Water, Wastewater & ETP
Effluent transfer, dewatering, coagulant/polymer dosing, filter press feeding, and sludge dewatering.
Pharmaceutical & Food Processing
Shear-sensitive API fluids, syrups, edible oils, dairy, high-purity solvents, and automated CIP loops.
Mining, Slurry & Construction
High abrasion resistance, pit dewatering, tailings disposal, and heavy solids handling.
4. Chemical & Fluid Compatibility Highlights
Wetted MaterialsNever select a pump on flow and head alone. Material selection must match the specific liquid concentration, temperature, and specific gravity:
- Hydrochloric Acid (HCl): Highly corrosive to standard 304/316 stainless steel. Requires Polypropylene (PP), PVDF or ETFE-lined Magnetic Drive Pumps.
- Concentrated Sulphuric Acid (H2SO4 >90%): Severe oxidizing agent at high temperatures. Requires PVDF, PTFE wetted parts or Alloy 20 / Hastelloy-C.
- Sodium Hypochlorite (NaOCl): Gassing fluid that causes vapour lock in standard suction lines. Requires PVDF/PTFE diaphragms and seal-less designs.
- Flammable Solvents (Ethanol, Toluene, Acetone): ATEX Zone 1/2 compliance required. Use conductive Metallic AODD with grounded earth leads or flameproof electric motors.
- Viscous Fluids (>500 cP): Centrifugal pumps experience severe flow loss. Transition to Gear Pumps, Lobe Pumps, or AODD Pumps.
5. Common Pumping Problems & Root Causes
DiagnosticsCavitation / Excessive Noise
Occurs when available NPSH (NPSHa) is lower than required NPSH (NPSHr). Reduce suction line friction, lower fluid temperature, or elevate supply tank.
Mechanical Seal Leakage
Often triggered by dry running, chemical attack on elastomer O-rings, or thermal shock. Switch to Seal-less Magnetic Drive or AODD.
Premature Diaphragm Failure
Caused by chemical attack, excessive air supply pressure, or large abrasive solids puncturing the elastomer. Ensure proper backing plates and PTFE diaphragms.
Loss of Prime on Suction Lift
Air ingress in suction piping or damaged foot valves. Switch to true self-priming CSP pumps or AODD pumps.