Arc Machines 307 - Manual (Page 161)

Arc Machines, Inc. Model 307 Orbital Tube Welder Training
Document No. 740096 Chapter 16. Page 8.
Rev. A
Weld Head
Head Number liters/min. CFH Minimum Purge Time (seconds)
9-250 2 - 5 7 - 10 ---------------------------------- 20
9-500 2 - 6 8 - 12 ---------------------------------- 20
9-500C 2 - 6 8 - 12 --------------------------------- 20
9-750 5 - 7 10 - 14 ---------------------------------- 20
9-1500 7 - 12 15 - 25 ---------------------------------- 20
9AF-1500 7 - 12 15 - 25 ---------------------------------- 20
9-2500 12 -14 25 - 30 ---------------------------------- 30
9-3500 12 - 14 25 - 30 ---------------------------------- 30
9-4500 14 - 19 30 - 40 ---------------------------------- 60
9-7500 14 - 19 30 - 40 ---------------------------------- 60
8-2000 7 - 12 15 - 30 ---------------------------------- 30
8-4000 7 - 12 15 - 30 ---------------------------------- 30
8-6625 7 - 12 15 - 30 ---------------------------------- 60
4-500 2 - 6 8 - 12 ---------------------------------- 20
‘E’ TYPE WELD HEADS
9E-1500 12 - 17 25 - 35 ---------------------------------- 30
9E-2500 12 - 19 25 - 40 ---------------------------------- 30
9E-3500 14 - 21 30 - 40 ---------------------------------- 30
9E-4500 17 - 24 35 - 50 ---------------------------------- 60
9E-7500 19 - 28 40 - 60 ---------------------------------- 60
Table 1. GAS FLOW RATES AND PREPURGE/POSTPURGE TIMES
Prepurge and Postpurge Recommended Flow Rate
Note: The same gas flow rates apply to both standard and AF type weld heads