TWO STAGE END SUCTION PUMPS AURORA 370 SerieS

TWO STAGE END SUCTION PUMPS AURORA 370 SerieS
MODEL 374B
(OPTIONAL POSITION 3 SHOWN)
AURORA 370 Series
®
TWO STAGE END SUCTION PUMPS
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TWO STAGE END SUCTION PUMPS
AURORA 370 Series
®
Two Stage End Suction Pumps
Capacities to 310 G.P.M.
Heads to 790 Ft.
Temperatures to 300°F
Standard Features
Reliable Operation.
•Dynamically balanced cast iron shell core
enclosed impellers
Compact system designs, application trends requiring increased
pressures and temperatures and the much higher costs of engineering
and construction have brought about a demand for a practical
multistage frame mounted end suction pump. Various pressures and
forces generated within a multi-stage unit must balance making shaft
and bearing design more critical than in single stage units. Split case
pump designs readily solve the mechanical problems of multistaging,
but are costly. Aurora Pump, a leader in the pump industry, has
combined over 90 years of knowledge in multistage split case and end
suction design and manufacturing techniques to produce a unique
combination of technical features in the 370 Series. Significantly, this
new Aurora pump design offers:
•Low NPSH Requirements
• Compact Design for Easy Installation and Maintenance
• Quiet, Smooth-Running Design for Longer Life
•Iron fitted construction
•Bronze shaft sleeves
•Bronze case wearing rings
•Regreasable bearings
•Discharge position No. 1
•Hydrostatic test
•Carbon steel shaft
•303 stainless high temperature mechanical seal
•O-ring sealed shaft sleeve
•Coupling guard
Optional Features
•All iron construction
•316 stainless steel shaft sleeves
•Stainless steel shaft or sleeve
•Cast iron case wearing rings
•Oil lubricated ball bearings
•Alternate piping positions
•Steel drip-rim bases
•316 stainless, special high temperature mechanical seal
with tungsten carbide and carbon parts
2
TWO STAGE END SUCTION PUMPS
Pump Features
F
E
A
B
H
D
A.
B.
Dynamically Balanced Impellers
keyed to the shaft and secured by a capscrew and washer. Quality controlled
manufacturing process assures consistently high performance. Enclosed
design provides highest efficiency, low NPSH and minimum wear for long
service life. After developing pressure in the first stage impeller the liquid is
directed to a second stage impeller where the process is repeated, doubling
the discharge head. By offsetting the discharges by 180˚ the radial loads on
the bearing are balanced and shaft deflection is minimized.
Case Wearing Rings
prevent wear on casing and are easily and inexpensively replaced.
C.
Hydrostatic Test
D.
Relief Line
G
E.
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High Temperature Mechanical Seal
is standard and located on the first stage to eliminate the need for costly high
pressure seal and premature failure.
F.
Carbon Steel Shaft
G.
Bronze Shaft Sleeve
H.
Rear Support Foot
guarantees casting and seal integrity.
assures adequate venting of the seal chamber and lube of the seal faces.
C
is designed for minimum deflection, not to exceed .002" at the sealing faces at
maximum load. Bearings selected for 2 years minimum life at maximum load.
Average bearing life is 10 years. Grease lubrication is standard.
prevents shaft wear and extends the entire length of the seal box. The sleeve
is slip fit over the shaft and is keylocked. Shaft sleeve and impeller screw are
sealed by O-ring gaskets to eliminate corrosion of the shaft by the pumped
liquid. This eliminates the requirements for high cost, stainless steel shafts.
provides power frame support and simplifies coupling alignment.
3
TWO STAGE END SUCTION PUMPS
Dimension Details
DISCHARGE
C
APPROX.
13-13/16
M
COUPLING
GUARD
DH
SUCTION
Y
DC
Z
STANDARD
SUCTION
POSITION
9
D
POSITION 3
OPTIONAL
HK
HP
HB
Notes:
1. Dimensions and weights are approximate.
2. All dimensions are in inches and may vary ± 1/4".
3. Frame sizes, "C" dimension and motor weight are for open
drip-proof motors only.
4. Conduit box is shown in approximate position. Dimensions are
not specified as they vary with each motor manufacturer.
5. Add pump, base and motor weight for unit weight.
6. Not for construction purposes unless certified.
7. Discharge position No. 1 is furnished as standard unless
otherwise specified.
8. Aurora® Pump reserves the right to make revisions to its
products and their specifications, and to this brochure and
related information without notice.
9. Power frame selection can be made from the range charts.
HG
HP
HA
HP
HL
HE
Pump Size
1-1/2 x 3 x 10
2 x 4 x 10
POSITION 1
STANDARD
Pump Size
Suction
3
4
Discharge
1-1/2
2
Pump Model
374
Base Number
5
6
8
9
11
12
POSITION 2
OPTIONAL
POSITION 4
OPTIONAL
Case Bore
10
10
Weight Lbs.
56
68
96
110
164
192
D
8
9
HA
11
11
14
14
18
18
POSITION 5
OPTIONAL
DC
7
7-5/8
HB
36-1/2
42-1/2
42-1/2
48-1/2
46-1/2
54-1/2
Pump Weight
215 lbs.
325 lbs.
HE
15-7/8
15-7/8
19
19
25-1/8
25-1/8
DH
HL
M
Y
Z
14-1/2
15-11/16
8
9-3/16
5-3/4
6-3/4
5-13/16
6-9/16
6-1/8
6-9/16
HG
3
3
3
3
4
4
HP
11/16
11/16
11/16
3/4
13/16
13/16
HK
1-1/2
1-1/2
1-1/2
1-1/2
2
2
Power Frame Weight (Lbs.)
2
3
82
87
Horsepower
4
Motor Frame
143T
145T
182T
184T
213T
215T
254T
256T
284TS
286TS
324TS
326TS
364TS
365TS
3500 RPM
–
–
–
–
10
15
20
25
30
40
50
60
75
100
1750 RPM
1
1-1/2–2
3
5
7-1/2
10
15
–
–
–
–
–
–
–
Motor Weight in Lbs.
30
35
45
50
120
144
217
246
320
351
442
522
540
590
C
12
13
13
14
16
18
21
23
22
24
25
26
27
28
Base Number
5
5
5
5
5
6
8
9
9
9
11
11
11
12
TWO STAGE END SUCTION PUMPS
Range Chart
Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory.
3500 RPM
1750 RPM
Power Frames No. 2 and 3
840
720
2x4x10
POWER SERIES 3
1-1/2x3x10
POWER SERIES 2
75
8-1/4 DIA. &
LARGER
POWER SERIES 3
60
40
480
HP
50
30
HP
HP
HP
15
40
HP
25
360
20
TOTAL DYNAMIC HEAD – FEET
600
30
HP
HP
HP
HP
HP
240
POW2x4x
ER S 10
ERIE
1-1/
POW 2x3
ER S x10
ERIE
S2
1-1
/
120
S3
2H
P
P
0
0
40
/2 H
P
5H
10 HP
P
3H
2H
7-1
P
5 HP
80
120
160
200
240
280
320
CAPACITY – GPM
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5
TWO STAGE END SUCTION PUMPS
Engineering Specifications
Design Details
Area
Pump Shaft
Ball Bearing
Description
Rotation from Driver End
Diameter at Impeller
Diameter at Shaft Sleeve
Diameter between Bearings
Diameter at Coupling End
Coupling Key – Square
Maximum Deflection at Seal Face
Outside Diameter of Sleeve
Bearing (Inb. Radial)
Bearing (Matched Set)
Conrad
Angular Contact
Bearing Centers
Minimum B10 Bearing Life under
Maximum Load
Outboard Tandem Thrust Bearing
Power Series
2
3
CW
CW
1-1/4
1-1/2
1-3/8
1-1/2
1-15/16
2-3/8
1-1/8
1-3/8
1/4
3/8
.002
.002
1-3/4
1-3/4
308
310
308
7308
7-11/16
310
7310
7-11/16
2 yrs.
2 yrs.
Limitations
Maximum Limitations Based on Standard
Materials and Pumping Clear Water
Speed – RPM
Model 374
3600
1-1/2 x 3 x 10
60
HP
2 x 4 x 10
100
Hydrostatic Test Pressure psi
600
–20˚ to 150˚ F
400
200˚ F
370
225˚ F
355
Case Working
Pressure psi
250˚ F
340
275˚ F
325
300˚ F
310
Suction Pressure psi
100
Sealing Method
Frame Mounted
Standard High Temperature
225
Temperature ˚ F
Mechanical Seal
Special High Temperature
300
Mechanical Seal
6
CONRAD
BEARING
ANGULAR
CONTACT BEARING
Angular contact bearing carries
maximum thrust load in direction
of normal thrust. Conrad bearing
locks bearing assembly and carries
reverse thrust load of reduced
magnitude.
Materials of Construction
Pump Part
Bracket
Casing
Impellers
Cover
Mechanical Seal
Power Frame
Shaft
Sleeves
Wearing Rings
Iron Fitted
All Iron
Cast Iron ASTM A48
Cast Iron ASTM A48
Cast Iron ASTM A48
Cast Iron ASTM A48
Cast Iron ASTM A48
Cast Iron ASTM A48
Cast Iron ASTM A48
Cast Iron ASTM A48
303 Stainless Steel Metal Parts
Buna-N Elastomer Parts
Ceramic Seat and Carbon Washer
Cast Iron ASTM A48
Cast Iron ASTM A48
Steel AISI C1045
Steel AISI C1045
Bronze ASTM B62
Stainless Steel AISI 316
Bronze ASTM B62
Cast Iron ASTM A48
TWO STAGE END SUCTION PUMPS
Engineering Specifications
Two Stage End Suction Pumps
The contractor shall furnish (and install as shown on the plans)
Aurora® Model (374 horizontal flexible coupled) centrifugal
pump sizes 1-1/2 x 3 x 10 or 2 x 4 x 10 (iron fitted) (all iron)
construction. Each pump shall have a capacity of _____ GPM
at _____ ft. total head, with a temperature of _____ ˚F,
_____ NPSH required and _____ specific gravity. Each pump is
to be furnished with a (standard) (high temperature) mechanical
seal with all metal parts to be (303) (316) stainless steel with
Buna-N elastomer, (ceramic) (tungsten carbide) seat, and carbon
washer. The unit must be equipped with (bronze) (stainless steel)
key-locked shaft sleeve that extends the length of the seal box.
The pump shaft extension shall be O-ring sealed from the pumped
liquid. Pump shall have case wearing rings.
Pump and motor are to be mounted on a common (formed steel
drip rim) (steel) baseplate. The shaft is to be carbon steel, installed
in a cast iron power frame. Pumps shall have a shaft design for
.002" deflection at the seal face with the pump running under
maximum load condition. (Grease) (Oil) lubricated ball bearings,
having a 2 year minimum life (AFBMA B10) under the maximum
condition of load and protected by separate oil seals and slingers,
shall be used. The pump shall be flexible coupled to a standard
horizontal NEMA _____ HP, _____ phase, _____ Hertz,
_____ volts, _____ RPM, (drip-proof) (totally enclosed)
(hazardous location) motor. Alignment shall be checked in
accordance with the Standards of the Hydraulic Institute after
installation and there shall be no strain transmitted to pumps.
Impellers are to be precision shell core cast, dynamically balanced
and keylocked to the shaft.
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7
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Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice.
A-02-1013 12/20/12 © 2012 Pentair Ltd. All Rights Reserved.
ISO 9001
AU
LIC
IT
DR
ST
800 AIRPORT ROAD, NORTH AURORA, ILLINOIS 60542 WWW.AURORAPUMP.COM
ER E D Q U
TY SYSTEM
ALI
IN
19 17
ST
EGI
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