3
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
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
Pipe Size
L/s
m
3
/min
m
3
/hr
cfm
OVR300
2”
87
5.2
314
185
OVR350
2”
177
10.6
637
375
OVR400
2”
354
21.2
1274
750
OVR450
2 1/2”
531
31.9
1911
1125
OVR500
2 1/2”
708
42.5
2549
1500
OVR550
2 1/2”
885
53.1
3186
1875
2 x OVR550
2 1/2”
1770
106.2
6371
3750
3 x OVR550
2 1/2”
2655
159.3
9557
5625
4 x OVR550
2 1/2”
3540
212.4
12743
7500
5 x OVR550
2 1/2”
4424
265.5
15928
9375
Model
Min Operating
Pressure
Max Operating
Pressure
Min Operating
Temperature
Max Operating
Temperature
Max Ambient
Temperature
bar g
psi g
bar g
psi g
o
C
o
F
o
C
o
F
o
C
o
F
OVR
1
15
16
232
2
35
50
122
55
131
Correction Factors Temperature (CFT)
Correction Factors Temperature (CFT)
Oil lubricated compressors
Oil free compressors
o
C
o
F
Correction Factor
o
C
o
F
Correction Factor
25
77
1.00
25
77
1.00
30
86
1.00
30
86
1.00
35
95
1.00
35
95
1.00
40
104
1.25
40
104
1.02
45
113
1.55
45
113
1.04
50
122
1.90
50
122
1.05
Correction Factors Pressure (CFP)
bar g
psi g
Correction Factor
3
44
2.00
4
58
1.60
5
73
1.33
6
87
1.14
7
100
1.00
8
116
1.00
9
131
1.00
10
145
1.00
11
160
1.00
12
174
1.00
13
189
1.00
14
203
1.00
15
218
1.00
16
232
1.00
Correction Factors - Inlet Dewpoint (CFD)
CDD Dewpoint
o
C
o
f
Correction Factor
Dry
-70 to +3
-100 to +38
1.00
Wet
+3 and above
+38 and above
4.00
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.
Summary of Contents for OVR300
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Page 18: ...NOTES...
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Page 160: ...5 2 4 domnick hunter Parker 2 4 1 2 4 2 A 4 B C A B A B C...
Page 161: ...6 2 5 1 3 OVR 2 4 1 8 OVR350 OVR550 OVR300 1 1 3 2 4 2 3...
Page 164: ...9 3 2 3 2 1 3 2 2 500 20 1000 39 4 100 4 3 3 3 3 1 3 3 2 3 3 3 1 2 3 4 5 6...
Page 165: ...10 4 4 1 1 2 3 4 5 4 2 1 2...
