Appendix C—Compressor Selection
Ammonia Compressor Selection Table
Service
Capacity
gpm
1
Displacement
cfm
Compressor
Driver Sheave
Size Pitch
Diameter
(inches)
2
Driver Horsepower
Piping Size
3
Liquid
Transfer With
Residual Vapor
Recovery
Liquid Transfer
Without
Residual Vapor
Recovery
Model RPM
1,750
RPM
1,450
RPM
100°F 80°F 100°F 80°F Vapor Liquid
Small bulk
plants
23 4 91 400 A 3.0 B 3.6 5 3 3 3 3/4 1-1/4
29 5 91 505 B 3.8 B 4.6 5 5 5 3 3/4 1-1/4
34 6 91 590 B 4.6 B 5.6 5 5 5 5 1 1-1/4
40 7 91 695 B 5.4 B 6.6 5 5 5 5 1 1-1/2
43 7 291 345 A 3.0 A 3.6 5 3 3 3 1 1-1/2
Unloading
single tank car
or transport
46 8 91 800 B 6.2 B 7.4 7-1/2 5 5 5 1 1-1/2
45 8 291 390 A 3.4 B 4.0 5 3 3 3 1 1-1/2
50 9 291 435 A 3.8 B 4.6 5 5 3 3 1 1-1/2
56 10 291 490 B 4.4 B 5.2 5 5 5 3 1 2
62 11 291 535 B 4.8 B 5.8 7-1/2 5 5 5 1 2
67 12 291 580 B 5.2 B 6.2 7-1/2 5 5 5 1 2
72 13 291 625 B 5.6 B 6.6 7-1/2 5 5 5 1-1/4 2
80 14 291 695 B 6.2 B 7.4 7-1/2 7-1/2 7-1/2 5 1-1/4 2
85 15 291 735 B 6.6 B 8.0 10 7-1/2 7-1/2 7-1/2 1-1/4 2-1/2
85 15 491 345 A 3.0 A 3.6 7-1/2 7-1/2 5 5 1-1/4 2-1/2
90 16 291 780 B 7.0 B 8.6 10 7-1/2 7-1/2 7-1/2 1-1/4 2-1/2
90 16 491 370 A 3.2 A 3.8 10 7-1/2 5 5 1-1/4 2-1/2
Unloading
two or more
tank cars at
one time or
large transport
with excess
flow valves
of adequate
capacity
96 17 491 390 A 3.4 B 4.0 10 7-1/2 5 5 1-1/4 3
102 18 491 415 A 3.6 B 4.4 10 7-1/2 7-1/2 7-1/2 1-1/4 3
107 19 491 435 A 3.8 B 4.6 10 7-1/2 7-1/2 7-1/2 1-1/4 3
110 20 491 445 B 4.0 B 4.8 10 7-1/2 7-1/2 7-1/2 1-1/4 3
115 21 491 470 B 4.2 B 5.0 10 7-1/2 7-1/2 7-1/2 1-1/4 3
120 22 491 490 B 4.4 B 5.2 15 10 7-1/2 7-1/2 1-1/4 3
126 23 491 515 B 4.6 B 5.6 15 10 7-1/2 7-1/2 1-1/4 3
131 24 491 535 B 4.8 B 5.8 15 10 10 7-1/2 1-1/4 3
138 25 491 560 B 5.0 B 6.0 15 10 10 7-1/2 1-1/4 3
142 26 491 580 B 5.2 B 6.2 15 10 10 7-1/2 1-1/4 3
148 27 491 605 B 5.4 B 6.4 15 10 10 10 1-1/4 3
153 28 491 625 B 5.6 B 6.6 15 10 10 10 1-1/2 3
160 29 491 650 B 5.8 B 7.0 15 15 10 10 1-1/2 3
165 30 491 670 B 6.0 15 15 15 10 1-1/2 3
165 30 691 400 B 4.4 B 5.2 15 15 10 10 1-1/2 3
170 31 491 695 B 6.2 B 7.4 15 15 15 10 1-1/2 3
173 31 691 420 B 4.6 B 5.6 15 15 10 10 1-1/2 3
181 32 491 740 B 6.6 B 8.0 15 15 15 15 1-1/2 3
180 32 691 440 B 4.8 B 5.8 15 15 10 10 1-1/2 3
188 34 691 455 B 5.0 B 6.0 20 15 10 10 1-1/2 3
195 35 691 475 B 5.2 B 6.2 20 15 10 10 1-1/2 3
203 36 691 495 B 5.4 B 6.4 20 15 15 10 1-1/2 3
Unloading
large tank
cars, multiple
vessels, barges
or terminals
211 38 691 510 B 5.6 B 6.8 20 15 15 10 1-1/2 4
218 39 691 530 B 5.8 B 7. 0 20 15 15 15 1-1/2 4
226 41 691 550 B 6.0 A 7.0 20 15 15 15 1-1/2 4
233 42 691 565 B 6.2 B 7.4 20 15 15 15 2 4
240 43 691 585 B 6.4 A 7.4 20 20 15 15 2 4
248 45 691 605 B 6.6 B 8.0 20 20 15 15 2 4
255 45 691 620 B 6.8 25 20 15 15 2 4
263 47 691 640 B 7.0 A 8.2 25 20 15 15 2 4
278 48 691 675 B 7.4 B 8.6 25 20 15 15 2 4
301 54 691 730 B 8.0 B 9.4 25 20 20 15 2 4
323 58 691 785 B 8.6 30 25 20 20 2 4
338 60 691 820 TB 9.0 A 10.6 30 25 20 20 2 4
459 82 D/FD891 580 5V 7.1 5V 8.5 40 30 30 30 3 6
633 113 D/FD891 800 5V 9.75 5V 11. 8 40 40 30 3 6
1
The capacities shown are based on 70°F, but will vary depending upon piping, fittings used, product being transferred and temperature. The factory can
supply a detailed computer analysis if required.
2
Driver sheaves: 91 - 2 belts; 291, 491 - 3 belts; 691 - 4 belts.
3
The piping sizes shown are considered minimum. If the length exceeds 100 ft., use the next larger size.
Consult factory for compressors with higher flows.
41
To Next Page
Loading...
