Page 249 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

Pumping of Liquids 219

QUINTUPLEX SINGLE-ACTING PUMP

Variation Above Mean, 1.8%
Variation Below Mean, 5.2%
Total Variation, 7. %

Variation Above Mean, 4.82%
Variation Below 1\-foan, 9.22%
Total Variation, 14.04%

oo 60° 120° 180° 240° l00° 3600

TRIPLEX SINGLE-ACTING PUMP

Vari a lion Above Mean, 6.1%
Variation Below Mean, 16.9%
Total Variation, 23. %
oo 120° 240° 360°

QUADRUPLEX SINGLE-ACTING PUMP

Variation Ab1>Ye Mean, I 1. %
Variation Bdow i\J,.an, 21.5�{ 1
Total Variation, 32.5%

DUPLEX DOUBLE-ACTING PUMP

Variation Above Mean, 24.1%
Variation Below Mean, 21.5%
Total Variation, 45.6%

Figure 3-68. Reciprocating pump discharge flow patterns. (Courtesy the Aldrich Pump Co.)