6
®Registered Trademark/TMTrademark of Gast Manufacturing Inc., Copyright ©2001 Gast Manufacturing Inc. All rights reserved.
Performance Curves - Low Range for Pressure/Vacuum
Motor mounted series R1, R2, R3, R4, R4P, R5
Performance at 60 Hz
0
0
125
Free Air Flow
25
100
10
PRESSURE
m /h
3
100
75
50
2.0
2.5
"H 0
2
mbar
psig
cfm
20
150
100
30
300
70
125
175
200
200
40
25
1.5
1.0
.5
50
75
R3-12/13
R2
R4P
R5
50
60
175
R4
R1
150
R3
0
0
125
CFM Inlet Air
25
100
10
VACUUM
100
75
50
2.0
4.5
"H 0
2
mbar
"Hg
cfm
20
150
30
125
150
40
25
1.5
1.0
.5
50
75
R3-12/13
R2
R4P
R5
50
60
R4
R1
2.5
3.0
3.5
4.0
R3
m /h
3
50
250
200
100
150
0
0
125
Free Air Flow
25
100
10
VACUUM
m /h
3
100
75
50
2.0
4.5
"H 0
2
mbar
"Hg
cfm
20
150
50
30
250
125
150
200
40
25
1.5
1.0
.5
50
75
R3-12/13
R2
R4P
R5
50
60
R4
R1
2.5
3.0
3.5
4.0
R3
100
150
Gast advertises blower performance in Free Air Flow, or air subjected to only atmospheric pressure. (See above curves)
Some blower manufacturers advertise vacuum performance in CFM Inlet Air - measurement of the suction of air at a specific temperature at the inlet port and a specific
discharge pressure at the exhaust port, which can be perceived as enhanced performance over Free Air Flow rated blowers. Therefore, we are also providing the following
vacuum performance for Gast blowers in CFM Inlet Air for comparison to other blower manufacturer's advertising.
REGENAIR
Æ
Regenerative Blowers
20
®Registered Trademark/TMTrademark of Gast Manufacturing Inc., Copyright ©2001 Gast Manufacturing Inc. All rights reserved.
REGENAIR
Æ
Regenerative Blowers
Product Dimensions
(in.
mm
)
R4 S
ERIES
MODELS R4110-2, R4310A-2, R4310B-1
MAX. PRESSURE ‚ 52"H
2
0 (60 Hz), 38"H
2
0 (50 Hz)
MAX. VACUUM ‚ 48"H
2
0 (60 Hz), 35"H
2
0 (50 Hz)
MAX. AIR FLOW ‚ 92 CFM (60 Hz), 75 CFM (50 Hz)
PRODUCT FEATURES
… Rugged construction, low maintenance
… Oilless operation
… UL and CSA approved TEFC motors with permanently
sealed ball bearings
… Automatic restart thermal protection on single phase motors
… Aluminum blower housing, impeller and cover
… Can be operated with no air flow through unit
… Can be mounted in any plane
… Inlet and outlet have internal muffling
RECOMMENDED ACCESSORIES
… Pressure gauge AJ496
… Inlet filter AJ126D (pressure)
… Vacuum gauge AJ497
… Inline filter AJ151D (vacuum)
… Muffler AJ121D
… Relief valve AG258
… Liquid separator RMS160 (vacuum)
.035 Ref
0,89
.47
11,94
Mounting Hole Detail
(Typ. 4) Scale 2:1
2 x Full R.
6.18
156,97
12.44
315,98
1.68
42,67
3.75
95,25
2.84
72,14
12.82 (Ref)
325,63
8.93
226,82
8.86
225,04
10.00
254,00
1 1/2" NPT (2)
.44 Ref
11,18
11.25
285,75
OUT
IN
3.96
100,58
Capacitor on single phase only
11.80
300,00
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®Registered Trademark/TMTrademark of Gast Manufacturing Inc., Copyright ©2001 Gast Manufacturing Inc. All rights reserved.
Application Engineering Information
Q. What happens to the noise when I locate two blowers
close together?
A. If the blowers are of the same design they produce
sound frequencies that are close together. These may
cause a "beating" change in volume of the blower noise.
This is because the units are not synchronized. If two
small blowers are needed this change in volume can be
reduced by moving tham further apart. With larger
blowers a dual blower with two blowers on one motor
will solve this problem.
Q. What causes the noise relief valves make?
A. Air rush through the valve.
Q. How do I control relief valve or bleed off valve noise?
A. Attach AJ121 series silencer on the port of the relief
valve that is open to atmosphere.
Contact Gast at 616-926-6171 or SepticTankParts.com with
any further questions you may have on reducing blower
noise in your application.
Noise Reduction and Absorption Coefficients for
Common and Specialty Noise Reduction Materials
125Hz
250Hz 500Hz 1000Hz 2000Hz 4000Hz NRC
Brick, unglazed
.03
.03
.03
.04
.05
.07
.04
Carpet
1/4 in pile height
.05
.10
.15
.30
.50
.55
.26
Fabric
Heavy Velour
18 oz per sq. yd
draped to 1/2 area
.14
.35
.55
.72
.70
.65
.62
Hardwood
Plywood Paneling
1/4 in thick
wood frame
.58
.22
.07
.04
.03
.07
.09
Tecnifoam*
TFP4
Pyramind shape
.39
.60
1.21
1.14
1.16
1.13
1.05
Tecnifoam*
TFW4000
Anaechoic
Wedge shape
.64
1.10
1.34
1.23
1.24
1.21
1.25
Source: Mechancial Engineering Reference Manual
*TFP4 and TFW4000 are products of Tecnifoam, Inc., 7145 Boone Avenue North,
Minneapolis, MN., 55428
Blower Sound Levels of
Gast Blowers
Data is highest sound level out of 4 places around the blower at
1 meter.
Data represents average of several units run at nominal voltage.
Lowest to highest maximum dba level throughout performance
range is shown.
Readings at other than the maximum around the blower at
1 meter may be from 2 to 10 dba less than data shown.
Readings taken in a laboratory sound room that does not reflect
much noise.
Note: For comparison purposes, some blower manufacturers
show sound data from 1‚1/2 meters instead of from 1 meter;
also, some blower manufacturers show an "average" sound
level across performance instead of the full range between
minimum and maximum sound levels; either of these methods
will provide different and usually lower sound levels compared to
Gast's sound level method.
60Hz
dBa at Pressure
50Hz
dBa at Pressure
R1
59-67
R1
59-64
R2
66
R2
61-63
R3
67-70
R3
63-68
R4
69-73
R4
64-69
R4P
69-75
R4P
64-71
R5
73-77
R5
71-77
R6
73-79
R6
70-79
R6P
82-83
R6P
77-80
R6PP
77-79
R6PP
73-76
R6PS
76-77
R6PS
72-75
R7
82-84
R7
77-79
R7P
77-80
R7P
74-79
R7S
75-77
R7S
72-76
R9
82-85
R9
78-85
R9P
81-88
R9P
79-86
R9S
79-81
R9S
77-81
R4H
80-82
R4H
75-81
R4M
82-83
R4M
78-79
R7H
83
R7H
79-81
60Hz
dBa at Vacuum
50Hz
dBa at Vacuum
R1
58-63
R1
54-60
R2
67
R2
63-64
R3
67-71
R3
64-69
R4
70-72
R4
66-70
R4P
73-74
R4P
68-71
R5
75-76
R5
71-73
R6
78-80
R6
74-77
R6P
81-85
R6P
79-81
R6PP
81-83
R6PP
78-79
R6PS
79-81
R6PS
76-77
R7
85-87
R7
79-84
R7P
84-86
R7P
80-83
R7S
82-83
R7S
78-80
R9
85-90
R9
83-84
R9P
88-90
R9P
84-87
R9S
87-88
R9S
83-86
R4H
82-89
R4H
79-88
R4M
85-89
R4M
80-85
R7H
82-91
R7H
80-90
