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Pumps & Pump Stations · 33 calculators

Specify the right pump — and prove it.

From a single bore pump to a multi-duty station, Tenselo takes you from flow and head to a sized, curve-matched pump with NPSH margin, efficiency and running cost — in minutes, not spreadsheets. Built for pump designers, mechanical engineers and installers across the water industry.

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Tenselo — ISO Endsuction Pump Selector
Inputs
45.0L/s
32.0m
Auto (head-based)▾
auto%
Select pump
Demonstration only — a simplified set of inputs is shown here. The live calculator includes additional fields and options.
Result
✓ Southern Cross STARLINE 150‑125‑160
ISO 2858 frame · close‑coupled · SOVEREIGN (long‑coupled) or Davey ISOspec CM interchange
45 L/s
Duty @ 32 m head
2‑pole
~2900 rpm
84%
BEP efficiency
16.8 kW
Absorbed power
18.5 kW
Motor at duty
22 kW
Non‑overloading
Pump & system curves Pump System Eff.
40 30 20 10 20 40 60 Duty 45 L/s @ 32 m Flow (L/s) Head (m)
Real output from the Tenselo ISO 2858 selector. Frame & efficiency are indicative of the maker's published curve bands — confirm the exact model on the Southern Cross range chart.

Inside this pack — 33 calculators

Every tool a pump specifier reaches for, in one place:

Affinity Laws Energy Cost / Season Pump Duty & Power Pump Specific Speed Pumps in Parallel / Series System Curve VSD Energy Savings Diesel ISO Pump Set ISO Endsuction Pump Selector Multistage Pump Selector NPSH Available Pump Cavitation Risk Bore Pump Selector Borehole Drawdown Deepwell Offset Bore Cable Voltage Drop Vertical Turbine Column Loss Pump Efficiency (Field) Pump Performance Degradation Pump Station Boosting Pump Intake Design Pump Station Header Pump Station Noise Pump Station Redundancy Pressure Tank Sizing Pump Cycle / Cooling Pump Min-Flow Bypass Pump Seal Flush Pump Start Cycling Restriction Orifice Plate Stock Water Calculator Aeration Blower Sizing Diffuser Selection

Why specifiers will use it

Less spreadsheet wrangling, fewer call-backs, sign-off you can defend.

🎯

Curve-matched, not guessed

Enter flow and head — get a real duty point on the pump and system curves, with the efficiency and power that come with it.

🛡️

NPSH & cavitation checked

NPSH available vs required is worked out for you, so you size out cavitation, dead-heads and premature seal failure before they bite.

💰

Running cost up front

VSD savings, annual energy and lifecycle cost let you justify the pump — and the upsell — with numbers the client trusts.

Every result, on your letterhead

One click turns any calculation into a clean, fully customisable PDF report — branded with your company logo, ready to drop straight into a submission, quote or design pack.

  • Your logo, company name and project details on every page
  • Inputs, results, the model selected and the method, all documented
  • Professional output you can hand to a client or an approver
Pump Selection — Calculation Report
ISO 2858 End-Suction Selector · Project: Transfer Pump Station
Duty point45 L/s @ 32 m
Selected modelSC STARLINE 150‑125‑160
Speed2‑pole ~2900 rpm
BEP efficiency~84%
Absorbed power16.8 kW
Motor at duty18.5 kW
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