Pump Engineering Documents

All documents provided courtesy of McNally Institute. Full documentation can be found at www.mcnallyinstitute.com. Click the underlined links to view the document at McNally Insitute.

Affinity Laws

ANSI Pump Sizes in Inches

ANSI Pump Sizes in Metric

Bearing Fit Tolerances

Total System Head (TSH)

Centrifugal Pump Basics

Centrifugal Pump Affinity Laws

Elastomer Limits

Fretting (Shaft)

Seal Failure

Seal Failure Prevention

Seal Common Questions

Stainless Steel – Corrosion

Troubleshooting Centrifugal Pumps

Vapor pressure chart -60 to 240°F.

Vapor Pressure chart -180 to 60°F.

Vibration – Pumps

Viscosity Corrections to Pump Curve

Calculations

1. First Critical Speed

2. Flow Through Orifice

3. Friction Loss

a. Fittings (inches)

b. Valves (inches)

c. Pipes (inches)

i. 1.250" and 1.500" pipe

ii. 2.000" and 2.500" pipe

iii. 3" pipe

iv. 6" pipe

d. Metric Friction Losses

4. Net Positive Suction Head

5. Pump Shaft Radial Thrust

6. Net Positive Suction Head

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