Tencarva Machinery Company
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Pump Toolkit — sizing & energy calculators
NPSH Available Calculator
Checks suction-side conditions against your pump's required NPSH so it doesn't cavitate.
Suction conditions
Pump centerline is above the liquid surface by this much (suction lift).
14.7 at sea level — drops ~0.5 psi per 1,000 ft of site elevation.
NPSH available
—ft
—
| Atmospheric head (H‒a) | — |
| Static suction head (H‒s) | — |
| Suction friction loss (H‒f) | — |
| Vapor pressure head (H‒vp) | — |
| NPSH available | — |
0 ft—
Pump Horsepower Calculator
Water & brake horsepower from flow and head, plus a recommended motor frame size.
Duty point
Electrical (optional)
Results
—BHP
—
| Water horsepower (WHP) | — |
| Brake horsepower (BHP) | — |
| Shaft power | — |
| Electrical input power | — |
| Est. full-load amps | — |
Total Dynamic Head & Sizing
Works out the head your pump has to overcome so you can spec flow & head before requesting a quote.
System requirements
Discharge point height minus source liquid level.
Friction loss
Total dynamic head
—ft TDH
at — GPM
| Elevation head | — |
| Pressure head | — |
| Friction loss | — |
| Total dynamic head | — |
Energy Cost & Payback
Compares annual running cost for an existing pump against a proposed replacement or upgrade.
Pumps
Operating assumptions
Annual running cost
| Annual savings | — |
| 5‒year savings | — |
| 10‒year savings | — |
| Simple payback | — |
Estimates for planning purposes, based on standard hydraulic formulas & Hazen–Williams friction loss — not a substitute for a certified pump curve. Talk to a Tencarva application engineer →