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SYSTEM FEED WATER & RECOVERY
ULTRA WHISPER SIZE CODES OF THE FEED PUMP, ETD, R.O. MEMBRANE ELEMENT, AND PRESSURE
VESSEL IN RELATIONSHIP TO THE GALLON PER DAY PRODUCTION OF THE SPECIFIC ULTRA WHISPER:
If any of these components are miss-matched the System will not function properly. Either the Operating Pressure
and Amperage Draw will be higher than specified causing damage to one or more of these components, or the
Operating Pressure will be lower than required resulting in low Product Water production and poor Product Water
Quality.
12 VDC, 24 VDC & Alternating Current 60 Hz powered Systems
Ultra
Product
Whisper
Water
Model
Production
GPD / LPD
UW 200
216 / 818
UW 300
298 / 1128
UW 400
403 / 1526
UW 500
547 / 2071
UW 600
619 / 2343
Alternating Current 50 Hz powered Systems
Ultra
Product
Whisper
Water
Model
Production
GPD / LPD
UW 200
224 / 848
UW 300
297 / 1124
UW 400
396 / 1499
UW 500
516 / 1953
UW 600
600 / 2271
SYSTEM PRESSURES: Seawater @ 35,000 PPM & 77° F / 25º C. Refer to Conversion Charts & Cross Reference
Information in Section 11 of this manual
Model
Ultra Whisper 200
Ultra Whisper 300
Ultra Whisper 400
Ultra Whisper 500
Ultra Whisper 600
Ultra Whisper SPECIFICATIONS
Feed
Feed
Pump
Pump
Elect. Mtr
Size Code
1/3 H.P.
10
1/3 H.P.
15
1/3 H.P.
15
1/2 H.P.
16
1/2 H.P.
17
Feed
Feed
Pump
Pump
Elect. Mtr
Size Code GPH / LPH
1/3 H.P.
35
1/3 H.P.
36
1/3 H.P.
36
1/2 H.P.
17
1/2 H.P.
18
Feed Water Pump
Nominal Discharge Pressure
into ETD
PSI
BAR
Kg/cm
100
6.9
7.03
150
10.34
10.55
135
9.31
9.49
150
10.34
10.55
175
12.07
12.30
Feed
ETD
Pump Flow
Size
GPH /LPH
Code
100 / 379
B-22
140 / 530
B-22
140 / 530
B-25
190 / 719
B-25
215 / 814
B-25
Feed
ETD
Pump Flow
Size
Code
Percentage
104.2 / 394
B-22
137.5 / 520
B-22
137.5 / 520
B-25
179.2 / 678
B-25
208.3 / 788
B-25
kPa
2
690
1034
931
1034
1207
xv
Sea Recovery Ultra Whisper Rev. A
ETD
R.O.
Recovery
Membrane
Percentage
Element
Size Code
9%
A
9%
B
12%
C
12%
C
12%
C
ETD
R.O.
Recovery
Membrane
Element
Size Code
9%
A
9%
B
12%
C
12%
C
12%
C
Nominal Operating Pressure
Developed by ETD
at R.O. Membrane Element
PSI
BAR
Kg/cm
620
42.75
43.59
590
40.68
41.48
590
40.68
41.48
650
44.82
45.70
680
46.89
47.81
Pressure
Vessel
Size Code
A
B
C
C
C
Pressure
Vessel
Size Code
A
B
C
C
C
kPa
2
4275
4068
4068
4482
4689
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