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2 Description
Oil vapour, is oil in a gaseous form and will pass straight through coalescing filters, which are designed to remove liquid oil and oil aerosols.
The OVR uses a large bed of activated carbon adsorbent, for the removal of oil vapour and odours and provides the ultimate protection against oil
contamination in all kinds of industries, where air purity is critical. The OVR must be protected by coalescing filters upstream of the unit.
2.1 Technical Specification
Flow Data
Model
OVR300
OVR350
OVR400
OVR450
OVR500
OVR550
2 x OVR550
3 x OVR550
4 x OVR550
5 x OVR550
Stated flows are for operation at 7 bar g (100 psi g / 0.7 MPa g), 35ºC (95ºF) for flows at other conditions use the correction factors belowOperating Data
Model
OVR
Correction Factors Temperature (CFT)
Oil lubricated compressors
o
o
C
25
77
30
86
35
95
40
104
45
113
50
122
Correction Factors Pressure (CFP)
bar g
psi g
3
44
4
58
5
73
6
87
7
100
8
116
9
131
10
145
11
160
12
174
13
189
14
203
15
218
16
232
Pipe Size
2"
2"
2"
2 1/2"
2 1/2"
2 1/2"
2 1/2"
2 1/2"
2 1/2"
2 1/2"
Min Operating
Max Operating
Pressure
bar g
psi g
bar g
1
15
16
Correction Factor
F
1.00
1.00
1.00
1.25
1.55
1.90
Correction Factor
2.00
1.60
1.33
1.14
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
3
L/s
m
/min
87
5.2
177
10.6
354
21.2
531
31.9
708
42.5
885
53.1
1770
106.2
2655
159.3
3540
212.4
4424
265.5
Min Operating
Pressure
Temperature
o
psi g
C
232
2
Correction Factors - Inlet Dewpoint (CFD)
CDD Dewpoint
Dry
-70 to +3
Wet
+3 and above
It is assumed inlet oil vapour concentration does not exceed 0.05mg/m3 at 35°C (95°F).
For applications with higher oil vapour concentrations, please contact Parker domnick hunter for accurate sizing.
Filter Selection - Grade OVR
To correctly select an OVR oil vapour removal filter, the flow rate of the OVR must be adjusted for the minimum operating pressure,
maximum operational temperature and pressure dewpoint of the system.
3
Obtain the minimum operating pressure, maximum inlet temperature, maximum compressed air flow rate and dewpoint of the
compressed air at the inlet of the OVR.
4
Select correction factor for maximum inlet temperature from the CFT table to compressor type (always round up e.g. for 37°C use
40°C correction factor).
5
Select correction factor for minimum inlet pressure from the CFP (always round down e.g. for 5.3 bar use 5 bar correction factor).
6
Select correction factor for pressure dewpoint from the CFD table.
7
Calculate minimum filtration capacity.
Minimum filtration Capacity = Compressed Air Flow x CFT x CFP x CFD
8
Using the minimum filtration capacity, select an OVR model from the flow rate tables above (OVR selected must have a flow rate
equal to or greater than the minimum filtration capacity).
If the minimum filtration capacity exceeds the maximum values of the models shown within the tables, please contact Parker
domnick hunter for advice regarding larger multi-banked units.
3
m
/hr
314
637
1274
1911
2549
3186
6371
9557
12743
15928
Max Operating
Temperature
o
o
o
F
C
F
35
50
122
Correction Factors Temperature (CFT)
Oil free compressors
o
o
C
F
25
77
30
86
35
95
40
104
45
113
50
122
o
o
C
f
-100 to +38
+38 and above
cfm
185
375
750
1125
1500
1875
3750
5625
7500
9375
Max Ambient
Temperature
o
o
C
F
55
131
Correction Factor
1.00
1.00
1.00
1.02
1.04
1.05
Correction Factor
1.00
4.00
3
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