Pressure Drop Reference Chart Acetylene
Pressure Drop In Acetylene Hose
Delivery
Pressure
LB.PER
SQ. IN.
Oxygen
Flow
CU. FT.
SQ. IN.
Pressure Drop LB. per SQ. In.
3/16" Hose 1/4" Hose 5/16" Hose 3/8" Hose
Hose Length in Feet
12.5 25 50 100 12.5 25 50 100 12.5 25 50 100 12.5 25 50 100
5 25 0.3 0.5 1.0 1.8 ** ** 0.5 0.8 ** ** ** 0.3 ** ** ** **
50 1.2 2.0 3.2 0.5 0.9 1.3 2.4 ** 0.3 0.4 0.7 ** ** 0.3 0.4
75 2.6 3.9 1.2 1.8 2.6 4.5 0.4 0.5 0.8 1.4 ** 0.3 0.5 0.8
100 4.3 1.9 2.8 4.4 0.5 0.8 1.3 2.4 0.3 0.4 0.7 1.1
150 4.0 1.2 1.7 2.7 4.8 0.5 0.8 1.2 2.2
10 25 0.3 0.5 0.8 1.4 ** ** 0.3 0.7 ** ** ** ** ** ** ** **
50 0.9 1.6 2.5 4.9 0.5 0.7 1.1 2.0 ** ** 0.3 0.6 ** ** ** 0.3
75 2.0 3.1 6.3 0.9 1.4 2.2 3.7 0.3 0.4 0.5 0.6 ** ** 0.3 0.6
100 4.5 5.4 1.6 2.0 3.6 6.0 0.4 0.6 0.9 2.2 ** 0.3 0.5 1.9
150 7.0 3.2 4.5 7.3 0.9 1.3 2.1 3.9 0.4 0.6 1.0 2.5
250 8.1 2.3 3.5 5.2 9.8 0.9 1.4 2.5 4.4
500 8.2 3.3 4.8 8.3
14 25 ** 0.4 0.7 1.3 ** ** 0.3 0.6 ** ** ** ** ** ** ** **
50 0.8 1.4 2.4 4.6 0.4 0.6 0.9 1.6 ** ** ** 0.4 ** ** ** 0.3
75 1.9 2.9 3.0 10.0 0.8 1.2 1.9 3.0 ** 0.3 0.5 1.0 ** ** 0.3 0.5
100 3.5 5.1 1.4 2.0 3.0 4.7 0.3 0.6 0.7 1.7 ** 0.3 0.4 0.8
150 7.9 2.9 4.0 6.0 8.7 0.8 1.2 1.7 3.4 0.3 0.5 0.9 1.6
250 7.4 9.5 2.0 3.1 4.5 8.1 0.7 1.2 2.3 3.8
500 8.7 10.5 13.7 2.9 4.0 8.1 11.5

* Indicates pressure drop of less than 2.0 per sq. in.
NOTE: To obtain the recommended inlet pressure at the apparatus, add the pressure drop figure ( shown above ) to the delivery pressure at the regulator. Do not exceed 15 PSIG for acetylene.