1
5
Lib
er
at
ors
IV
Specifications
(Nominal Values)
MODEL
LIBERATOR 20
LIBERATOR 30
LIBERATOR 37
LIBERATOR 45
LIBERATOR 60
Volume of LOX
(typical)
21.
0
liters / .02
1
m3
31.
0
liters / .031 m3
3
7
.
3
liters / .03
73
m3
4
5.7
liters / .04
57
m3
60.
2
liters / .06
02
m3
Weight of LOX at 24
psig (166 kPa) Satura-
tion (typical)
2
3
kg (5
0
.
7
lbs)
3
3.9
kg (7
4.
8 lbs)
40.8
kg (9
0
lbs)
50.
04
kg (11
0
.3 lbs)
6
5.9
kg (14
5.
3 lbs)
G
a
sous Oxygen
Equivalent @ 1atm
and 70F
1
7
,
337
liters / 6
12
ft3
25,580
liters / 9
03
ft3
31,121
liters / 1
099
ft3
37,724
liters / 1
332
ft3
49,679
liters / 1
754
ft3
Height
62.2 cm / 24.5 in
74.9 cm / 29.5 in
83.2 cm / 32.75 in
94.0 cm / 37 in
99.1 cm / 39 in
Diameter
35.6 cm / 14 in
35.6 cm / 14 in
35.6 cm / 14 in
35.6 cm / 14 in
40.6 cm / 16 in
Empty Weight
17.
69
kg / 39 lbs
22.04
kg /
48.6
lbs
22.68 kg / 50 lbs
24.95 kg / 55 lbs
34.19
kg /
75.4
lbs
Full Weight
4
0
.6
9
kg /
8
9.7 lbs
5
5.94
kg /
12
2.3
2
lbs
63.
4
8
kg / 14
0
lbs
7
4
.
99
kg / 16
5
.3
2
lbs
100.1
kg / 2
20.68
lbs
Outlet Pressure
1.4 bar / 20 psi
1.4 bar / 20 psi
1.4 bar / 20 psi
1.4 bar / 20 psi
1.4 bar / 20 psi
Nominal Operating /
Economizer Pressure
1.4 bar / 20 psi
1.4 bar / 20 psi
1.4 bar / 20 psi
1.4 bar / 20 psi
1.4 bar / 20 psi
Density (Weight of
LOX) @ Nominal Op-
erating/Economizer
Pressure
1.095 kg/L or
2.413 lbs/L
1.095 kg/L or
2.413 lbs/L
1.095 kg/L or
2.413 lbs/L
1.095 kg/L or
2.413 lbs/L
1.095 kg/L or
2.413 lbs/L
Primary Relief Valve
Opening Pressure
1.6 bar / 23.2 psi
1.6 bar / 23.2 psi
1.6 bar / 23.2 psi
1.6 bar / 23.2 psi
1.6 bar / 23.2 psi
Primary Relief Valve
Reseat Pressure
1.4 bar / 20.5 psi
1.4 bar / 20.5 psi
1.4 bar / 20.5 psi
1.4 bar / 20.5 psi
1.4 bar / 20.5 psi
Secondary Relief
Valve Opening
Pressure
2.1 bar / 30.5 psi
2.1 bar / 30.5 psi
2.1 bar / 30.5 psi
2.1 bar / 30.5 psi
2.1 bar / 30.5 psi
Secondary Relief
Valve Reseat Pressure
1.9 bar / 27 psi
1.9 bar / 27 psi
1.9 bar / 27 psi
1.9 bar / 27 psi
1.9 bar / 27 psi
Normal Evaporation
Rate (NER - typical)
.73 kg / 1.6 lbs
.73 kg / 1.6 lbs
.73 kg / 1.6 lbs
.73 kg / 1.6 lbs
.73 kg / 1.6 lbs
Maximum Outlet
Flow
15 L/min
15 L/min
15 L/min
15 L/min
15 L/min
Contents Indicator
Capacitance Probe
with LED Readout
Capacitance Probe
with LED Readout
Capacitance Probe
with LED Readout
Capacitance Probe
with LED Readout
Capacitance Probe
with LED Readout
Operating Tempera-
ture
10°C to 40°C 95%
max. relative humidity
10°C to 40°C 95%
max. relative humidity
10°C to 40°C 95%
max. relative humidity
10°C to 40°C 95%
max. relative humidity
10°C to 40°C 95%
max. relative humidity
Storage Temperature
-40°C to 70°C 95%
max. relative humidity
-40°C to 70°C 95%
max. relative humidity
-40°C to 70°C 95%
max. relative humidity
-40°C to 70°C 95%
max. relative humidity
-40°C to 70°C 95%
max. relative humidity
Note:
All specifications are
applicable for G4 Liberators only and
based upon optimum environmental and
pressure conditions as stated above.
Listed capacities have incorporated a 2% ullage in compliance with ADR requirements.
At optimum operating conditions, the conversion factor of liquid oxygen to gaseous oxygen is 1:860.
LIBERATOR SPECIFICATIONS
Liberators Technical Service Manual • PN 13350704 Rev
K
