Pump Performance Curves
ANSI B73.1 · Hydraulic selection resource

ANSI Pump Performance Curves

Find the curve, verify the duty, then request engineering review.

Use the hydraulic coverage map for preliminary size screening, or jump directly to an individual curve when you already know the installed pump size. Curves are shown from the approved curve book rather than redrawn or approximated.

29 indexed sizesSTX · MTX/LTX · XLT-X
50 / 60 HzPublished speed-specific charts
5× PDF renderHigh-resolution curve viewing
Engineering boundaryNo pixel-based fake selection result
Start here

Choose the path that matches the information you already have.

Maintenance and procurement teams often know the installed pump size. EPC and application engineers may start with only flow and total head. The page supports both paths.

01 · STARTING POINT
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I know my pump size

Search a size such as 1.5×3-8, 2×3-10 or 3×4-13 and open the real 50 Hz or 60 Hz performance curve.

Best for: installed pump replacement, MRO cross-reference, curve verification.
↗

I know my duty point

Start with flow, total dynamic head and frequency. Use the family coverage map to identify a candidate size, then verify its individual curve.

Best for: EPC selection, changed duty, new operating point, preliminary sizing.
1 · Candidate family→2 · Individual curve→3 · Duty review→4 · RFQ / engineering confirmation
Preliminary hydraulic screening

Step 1 — Use the coverage map when the exact size is not known.

The coverage map narrows the field. It does not replace an individual pump curve or final application review.

02 · HYDRAULIC COVERAGE
Hydraulic coverage — high- and low-speed ranges
ANSI process pump hydraulic coverage map from current curve book
Real curve finder

Step 2 — Find the individual performance curve by pump size.

Search and filter the indexed sizes, switch frequency, then zoom the high-resolution image rendered directly from the current curve book.

03 · INDIVIDUAL CURVES

Individual performance curves
100%
Individual ANSI pump performance curves
Impeller trimPublished impeller diameters remain visible.
EfficiencyOriginal efficiency contours are preserved.
PowerkW or hp lines are retained by frequency.
NPSHRead from the published curve where shown.
Engineering bridge

Step 3 — Put the curve in context with the actual duty point.

This stage prepares the information for engineering review. It deliberately does not invent efficiency, trim or NPSHr by reading pixels from the PDF.

04 · DUTY REVIEW

Operating point

Enter what is known. The selected curve size and frequency are carried into the review summary.

Engineering review summary

The final site version can pass these values into GF10 hidden / visible fields instead of asking the visitor to retype them.

Select a curve or enter a duty point to prepare the review context.
Complete engineering resource

Download the complete ANSI process pump curve book.

Use the full PDF when you need to compare multiple sizes or retain the complete published reference. The curve finder above is the faster path when the installed pump size is already known.

18-page PDF50 Hz + 60 HzIndividual curvesImpeller trim · efficiency · power · NPSH

D Mark III replacement curve review

The individual curve index on this preview is driven by the current 3196-family curve book. Keep the existing D Mark III family coverage on the live page, but route pump-specific D Mark III curve requests through engineering review until a verified individual-curve source is approved.

D Mark III replacement resource ↗
Conversion point

Step 4 — Request curve confirmation or a replacement pump review.

Production implementation should mount the existing GF10 Engineering Context RFQ here. The page passes selected size, frequency and duty data into GF10; it does not create a second fake form.

05 · GF10 / RFQ

Engineering Context RFQ

Existing GF10 in production
Selected curve—
Frequency / speed context—
Duty point—
Engineering reviewComplete the existing Gravity Form 10 below. Selected curve and duty-point context are carried into its existing hidden fields.
Continue engineering review

Related resources

Keep the next step close to the curve task rather than ending the page with generic navigation.

Engineering boundary: Curve graphics are reference data from the current uploaded curve book. Final replacement selection requires confirmation of the actual operating point, speed, liquid properties, NPSHa, metallurgy, seal arrangement, motor loading and installed interfaces. The production page should not present pixel-derived estimates as certified pump-selection results.

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