Knowledge Center
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Latest Articles & Guides
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Pump Selection Guides
Selecting Pumps, Blowers and Dosing Equipment for Wastewater Treatment Plants
How do you select pumps, blowers and dosing equipment for a wastewater treatment plant? Stage by stage against EN 12255: raw sewage…
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Pump Selection Guides
Centrifugal Pump Impellers: Open, Semi-Open and Closed Selection
How do you select a centrifugal pump impeller? The construction of open, semi-open and closed impellers, the solids-versus-efficiency trade-off, how clearance and…
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Pump Engineering
Pump Sizing: Total Dynamic Head, System Curve and Pipe Friction Loss
How do you size a pump? The components of total dynamic head, friction loss with Darcy–Weisbach, a fully worked example, system curve…
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Pump Selection Guides
Pump and Blower Selection for Explosive Atmospheres: Reading the ATEX Marking
How do you select pumps and blowers for explosive atmospheres? Reading the ATEX marking line by line, matching zone to category, gas…
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Pump Engineering
Pump Failures and Maintenance: Vibration, Alignment and Bearing Life
How do you diagnose pump failures? The three readings to take before opening the pump, ISO 20816 vibration evaluation, how misalignment cuts…
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Pump Selection Guides
Hot Oil Pump Selection: Circulation, Transfer and Temperature Limits
How do you select a hot oil pump? The difference between circulation and transfer duty, film versus bulk temperature, the 200 °C…
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Pump Selection Guides
Blower Selection: Roots (Lobe), Side Channel and Multistage Compared
How do you select a blower? The difference between lobe (Roots) and side channel blowers, the m³/h versus Nm³/h trap, the pressure…
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Pump Selection Guides
Selecting an Air-Operated Double-Diaphragm (AODD) Pump: Flow Rate, Air Consumption, and Diaphragm Material
When selecting an air-operated double-diaphragm (AODD) pump, how do you determine the 1:1 flow-to-pressure ratio, actual air consumption, suction lift, and diaphragm…
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Pump Selection Guides
Dosing Pump Selection: A Comparison of Solenoid, Mechanical Diaphragm, and Peristaltic Pumps
When selecting a chemical dosing pump, when are solenoid, motor-driven mechanical diaphragm, and peristaltic technologies the right choice? A selection guide covering…
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Pump Engineering
Magnetic Coupling Pumps: The Engineering of Leak-Free Transfer and Proper Selection
How a magnetic drive (sealless) pump works, why decoupling and dry running are critical, and how to choose between a metallic and…
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Vacuum Technologies
Vacuum Pump Selection: A Comparison of Liquid-Ring, Oil-Sealed Vane, and Lobe Booster Pumps
How are target pressure and flow rate determined when selecting a vacuum pump? Limitations of liquid-ring, oil-sealed rotary vane, and lobe (Roots)…
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Pump Engineering
NPSH and Cavitation: Pump Suction Line Design (With Calculated Examples)
What are NPSHa and NPSHr, and how are they calculated? The effect of temperature and elevation on suction capacity, the safe NPSH…
