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NET POSITIVE SUCTION HEAD REQUIRED (NPSHR)*
AT FLUID CYLINDER SUCTION CONNECTION WITH SUCTION STABILIZER
AND DISCHARGE PULSATION DAMPENER INSTALLED
RPM
Pump Bulletins list the maximum and minimum plunger sizes.
Interpolate between NPSH curves for each plunger size.
*NPSHR is defined at a 3% flow drop below maximum capacity.
Added suction head above that shown by the curves must be provided for the higher vapor pressure of
warmer water (curves are based on 60
°
F water) and/or other fluids and for acceleration head and friction
losses in systems having long and/or restricted suction lines.
