Akron Brass AFTK-LK-KIT Operating Instructions

Browse online or download pdf Operating Instructions for Test Equipment Akron Brass AFTK-LK-KIT. Akron Brass AFTK-LK-KIT 3 pages. Apparatus flow test kit

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Straight Bore Discharge Data
AFTK Nozzle Tip Diameter (inches)
3/4"
1"
1-1/4"
Nozzle
Pressure
Gallons Per Minute
(PSI)
40
94
166
279
42
97
172
285
44
100
177
293
46
103
182
299
48
105
184
305
50
107
189
311
52
109
192
317
54
110
195
323
56
113
199
330
58
115
203
335
60
116
206
341
62
118
209
346
64
120
213
351
66
122
216
357
68
124
219
363
70
125
221
367
72
127
226
373
74
129
228
377
76
131
231
384
78
132
235
388
80
134
237
392
82
136
240
396
84
138
242
401
86
140
246
406
88
141
248
410
90
142
251
414
92
144
254
417
94
146
257
423
96
147
259
428
98
149
262
432
100
150
265
436
102
151
267
440
104
153
269
444
106
154
271
448
108
155
275
451
110
157
277
454
112
159
278
456
114
160
281
460
116
161
283
465
118
163
287
467
120
165
291
470
Preferred test range is 50 to 100 PSI
Deviating from the recommended test setup can effect values given in this chart.
*Note: Flows with asterisk (*) are based upon theoretical discharge calculations.
*Solid Bore Discharge Formula: 29.71D2√NP , D = Bore Diameter, NP = Nozzle Pressure Measured with Pitot Gauge (PSI).
References: International Fire Service Training Association (IFSTA) Fire Protection Publications - Fire Stream Practices.
Always follow the most current NFPA 1911 when testing with the Apparatus Flow Test Kit.
Sheet: 127169
STYLE AFTK-LK-KIT, AFTK-SK-KIT
APPARATUS FLOW TEST KIT OPERATING INSTRUCTIONS
2"
1-1/2"
1-3/4"
2-1/4"
399
561
745
927
408
569
764
943
417
584
784
977
430
600
805
1001
438
614
821
1023
449
626
834
1042
460
637
849
1063
466
647
862
1080
479
661
880
1106
488
670
897
1132
494
684
911
1150
501
694
923
1167
508
703
933
1180
513
719
952
1205
521
732
968
1226
529
742
978
1245
535
750
987
1259
541
759
1000
1269
551
770
1021
1290
555
782
1035
1311
564
790
1044
1326
568
797
1057
1337
574
807
1066
1347
585
817
1085
1366
591
828
1101
1378
596
838
1113
1388
601
846
1122
1399
609
852
1133
1420
617
865
1142
1436
622
874
1154
1450
627
882
1170
1461
633
889
1178
1473
637
895
1188
1484
646
905
1202
1499
655
913
1211
1563*
658
920
1222
1577*
663
925
1231
1592*
667
931
1239
1606*
673
941
1245
1620*
680
947
1260
1634*
686
957
1266
1648*
PHONE: 800.228.1161 I WEBSITE: www.akronbrass.com
BASIC PRINCIPLE OF OPERATION
2-1/2"
The Apparatus Flow Test Kit (AFTK) uses the pitot method to measure water flow.
This is where flow is the direct function of the stream velocity (pressure) through a
nozzle tip of known diameter.
1174*
One way to read nozzle tip pressure, accurately, is to place the pitot tube tip
1203*
securely in the center of the discharge tip diameter and parallel to the direction of the
1232*
water flow. The pitot simply measures the flowing water pressure at the point of pick
1259*
up and is read in PSI on the pressure gauge. The enclosed Akron Brass Straight
1286*
Bore Discharge Data chart converts the PSI reading to the actual flow in GPM.
1313*
HOW TO USE: Flush the system, totally, prior to testing. Attach the Apparatus Flow
1339*
Test Kit (AFTK) to a deluge set that has the recommended hose layouts connected
1365*
to it. Attach the appropriate discharge tip size you wish to start testing with. Bring
1390*
your apparatus up to the proper engine RPM as per the UL Test Plate mounted
1414*
on the pump panel. Bleed all entrapped air from pitot blade and gauge using the
1438*
bleeder valve. The pitot reading in PSI and its correlation to the corresponding
"Straight Bore Discharge Data" chart will give you the flow in gallons per minute of
1462*
1486*
your apparatus at that RPM. After use, press the bleeder button to allow the pitot
tube and gauge to drain, this is especially necessary in freezing weather.
1509*
1531*
If by chance the pitot turns while testing, REALIGNMENT is required. To realign,
1554*
loosen the thumb knob that retains the pitot rotationally, center the pitot tip in the
1576*
middle of the discharge tip bore and tighten the knob.
1597*
The gauge has an accuracy of plus or minus 1%. If it is dropped or abused in any
1619*
way it will need to be replaced. Recalibration of a liquid filled gauge can only be
1640*
done by the original manufacturer.
1661*
1681*
RECOMMENDATIONS: (1) Always follow the most current NFPA 1911 Standard
for "Service Tests of Pumps on Fire Department Apparatus" when testing; (2) Direct
1702*
flow away from any possible hazards, preferably to an open area; (3) Mount the test
1722*
kit to a secured monitor or similar device; (4) Flush the device to be tested prior to
1742*
attachment of the flow test kit; (5) Check all connections prior to flowing water; (6)
1762*
Never interchange nozzle tips while the flow test kit is in operation; (7) Water flow
1781*
shall be straightened using a style 3488 stream staightener; (8) All reducers and/or
1800*
adapters connected to the flow test kit must have a minimum of a 2-1/2" waterway;
1819*
(9) Nozzle tips should be screwed on, hand tight, so the gasket is not expanded into
1838*
the waterway. There is no need for spanner tightening.
1857*
MAINTENANCE and INSPECTION: (1) Inspect the internal surface of the nozzle
1875*
tips before and after each use for any nicks or gouges, this may affect the readings.
1894*
Use only the nozzle smooth bore tips provided; (2) Inspect the pitot waterway to
1912*
ensure that no obstructions are present; (3) Check pitot blade to make certain it is in
1930*
the center of the waterway, as this may affect the reading; (4) In the event the pitot
1948*
blade becomes damaged, a new blade can be ordered from your local distributor.
1965*
1983*
2000*
2017*
2034*
Revision 09/2020
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