Page 8 - Gast Regenair Regenerative Blower

Performance Curves
REGENAIR Regenerative Blowers
®

Performance Curves - Low Range for Pressure/Vacuum
Motor mounted series R1, R2, R3, R4, R4P, R5
Performance at 60 Hz
mbar psig inH 0 PRESSURE
2
175 2.5 70
150 60
2.0 R4P
125 50
R3-12/13
100 1.5 40 R5
R3
75 30 R4
1.0
50 R2
20
25 .5 10 R1
0
0 25 50 75 100 125 150 175 200 CFM
3
100 200 300 m /h
Free Air Flow

mbar inHg inH 0 VACUUM
2
150 4.5 60
4.0
125 50
3.5 R5
100 3.0 40
R3 R3-12/13
2.5 R4P
75 30
2.0
R4
50 1.5 20
1.0 R1
25 .5 10 R2
0
0 25 50 75 100 125 150 CFM
3
50 100 150 200 250 m /h
Free Air Flow

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.
mbar inHg inH 0 VACUUM
2
300 9.0 125
8.0
250 100
7.0
R7 R9P
200 6.0 75 R9
5.0 R7P
150 R6 R6P R6PP
4.0 50
100 3.0
2.0
50 25
1.0
0
0 200 400 600 800 1000 1200 1400 CFM
3
400 800 1200 1600 2000 2400 m /h
CFM Inlet Air

8 Gast Regenair ® Regenerative Blowers www.gastmfg.com