SINGLE STAGE WATER SEAL PUMPS AURORA 680 SerieS “APCO-SeAL”

SINGLE STAGE WATER SEAL PUMPS AURORA 680 SerieS “APCO-SeAL”
Model 682
AURORA 680 Series
“APCO-SEAL”
®
SINGLE STAGE WATER SEAL PUMPS
WWW.AURORAPUMP.COM
SINGLE STAGE WATER SEAL PUMPS
AURORA 680 Series
®
Single Stage Water Seal Pumps – "Apco-Seal"
Capacities to 25 GPM
Heads to 180 Feet
Temperatures to 190°F
Discharge Sizes 1" and 1-1/2"
Introduction Aurora Water Seal Units
A water seal unit is a complete pumping system used with, but
independent of, larger municipal or industrial pumps. Its purpose is to
provide a lubrication and flushing action of clean water for mechanical
seals and packing boxes in pumps handling abrasive or corrosive
materials in suspension. Normally, pressure in a pump forces grit and
corrosives, in the liquid being pumped, back into the stuffing box,
subjecting seals or packing to early wear or service. When a water
seal unit is installed, clean water, under pressure, is forced into the
stuffing box thereby flushing away abrasive contaminants. Water seal
units with sewage pumps are a must if packing and mechanical seal
replacements are to be kept to a minimum. When a central water
supply is used for sealing purposes, an air gap between the incoming
water supply and the tank overflow is required to prevent contamination
of the central supply. This is accomplished by the Aurora water
seal unit.
With your Aurora water seal unit you are getting an Aurora turbine
pump. These pumps are especially designed for small flows with
little change in flow over wide pressure ranges, and operate at 1750
RPM. This is not a 3500 RPM centrifugal pump running at "shut off",
in its poorest operating range. All this means a system giving you
reliability and long service life with top performance. For reliability
plus simplicity of design, compare the features of the Aurora water
seal unit before you specify.
Quick Reference – Water Seal Unit Feature Selector
Standard
•04F or 05F turbine pumps with mechanical seals
•Mechanical make up float valve
•50 gallon capacity galvanized receiver with inlet,
overflow and drain connections
Optional
•Tank cover
•Electric float switch and external solenoid valve
•Inlet "Y" strainer
•Electric sequence changer for duplex unit
•Relief valve
•Isolation valve
2
The Aurora water seal unit is easy to install. Stand the unit in place, no
special foundation Is required, and connect the piping to the stuffing
boxes of one or more pumps.
SINGLE STAGE WATER SEAL PUMPS
System Features
A.
Direct Flow Brass Positive Shut-Off Float Valve
A
provides trouble-free service. Simple lever action replaces water lost due to
processing, evaporation, etc.
B
B. 50 Gallon Galvanized Receiver
inside and out prevents corrosion, eliminating the need for special coatings
and is 3/16" to ensure long life. Receiver with open top includes threaded inlet,
overflow and drain openings.
C
for minimum space requirements fits into room corner.
D
C.
Compact Design
D.
Pumps Mount Directly on the Receiver
E.
F.
No suction piping is required.
Turbine Type Pump
at 1750 RPM provides reliable performance. For more information concerning
the 130 Series turbine pump, please refer to Bulletin 130.
Covered Suction Connection
F
is provided for converting from simplex to duplex operation.
E
Model 681 illustrated
Selecting Your Water Seal Unit
1. Determine the Capacity required for an installation by multipling the number of stuffing boxes being flushed by 2 GPM.
2. Determine the Pressure required for flushing a pump stuffing box by the following formula:
Pressure = Vertical height + friction loss + (.8 x discharge head.)
Vertical Height = Vertical distance between centerlines of suction of water seal pump and stuffing box in pump being flushed.
Friction Loss = Loss in head between water seal pump and flushed pump stuffing box.
Discharge Head = Discharge head of pump being flushed.
3. Make the Selection from the water seal selection chart below.
Pressure psi
Total Dynamic
Head in Feet (GPM)
Size
2
hp
Size
4
hp
Size
6
hp
Size
8
hp
Size
10
hp
Size
15
hp
Size
20
hp
Size
25
hp
9
13
17
Water Seal Unit 1750 RPM Maximum Temperature 190˚ F
22
26
30
35
39
43
52
61
69
78
20
30
40
50
60
70
80
90
100
120
140
160
180
A04F
1/3
C04F
1/3
D04F
1/3
G05F
1/3
G05F
1/3
I05F
1/3
J05F
1/2
K05F
1/2
A04F
1/3
C04F
1/3
D04F
1/3
G05F
1/3
G05F
1/3
I05F
1/3
J05F
1/2
K05F
1/2
B04F
1/3
D04F
1/3
F05F
1/3
G05F
1/3
H05F
1/3
I05F
1/2
J05F
1/2
K05F
3/4
B04F
1/3
D04F
1/3
F05F
1/3
G05F
1/3
H05F
1/2
I05F
1/2
J05F
3/4
K05F
3/4
B04F
1/3
D04F
1/3
F05F
1/3
G05F
1/3
H05F
1/2
I05F
3/4
J05F
3/4
K05F
3/4
C04F
1/3
F05F
1/3
G05F
1/3
H05F
1/3
H05F
1/2
J05F
3/4
K05F
3/4
C04F
1/3
F05F
1/3
G05F
1/3
H05F
3/4
H05F
1/2
J05F
3/4
K05F
1
C04F
1/3
F05F
1/3
G05F
1/2
H05F
3/4
I05F
3/4
J05F
1
K05F
1
F05F
1/3
F05F
1/3
H05F
3/4
H05F
3/4
I05F
3/4
J05F
1
K05F
1
F05F
1/2
F05F
1/2
H05F
3/4
H05F
3/4
I05F
1
K05F
1-1/2
–
–
F05F
1/2
H05F
3/4
H05F
3/4
I05F
1
J05F
1-1/2
K05F
1-1/2
–
–
F05F
1/2
H05F
1
H05F
1
I05F
1
K05F
1-1/2
–
–
–
–
F05F
3/4
H05F
1
I05F
1-1/2
K05F
2
–
–
–
–
–
–
WWW.AURORAPUMP.COM
NOTE: Refer to factory for selections not shown on chart.
3
Engineering Specifications and Dimensional Details
Part
Casing
Impeller
Impeller sleeve
Inner ring
Outer ring
Mechanical seal
Bracket
Motor shaft
Float valve
Receiver
Suction flange (model 681 only)
Materials of Construction
Material
Cast iron ASTM A48
Bronze ASTM B82
Bronze ASTM B82
Cast iron ASTM A48
Cast iron ASTM A48
316 stainless steel metal parts, Buna-N elastomer parts,
ceramic and carbon washer.
Cast iron ASTM A48
Stainless steel AISI 416
Brass ASTM B-36
Galvanized steel 3/16'' hot dipped
Cast iron ASTM A48
Model
04F
05F
Frame
56
145T
182T
Disch.
1
1-1/2
Water Seal Dimensions
Pump Wgt. Receiver Wgt.
20
120
34
120
Horsepower 1750 RPM
1/3
1/2
3/4
1
1-1/2**
1-1/2 *
2**
2
* Single phase only ** Three phase only
A***
B
19-9/16
3-1/16
22-5/16
3-3/4
Motor Wgt.
29
46
56
56
65
42
48
65
*** Add 2" for isolation valve
The contractor shall furnish (and install in location as shown on
the plan) an Aurora® type "Apco-Seal" water seal unit Model 681
(simplex) ____ – Model 682 (duplex) ____. The unit shall have an
Aurora vertical flange mounted (04F or 05F) turbine type pump with a
capacity of ____ GPM at ____ total head. The pump is to be bronze
fitted with a mechanical seal with all metal parts of 316 stainless
steel, Buna-N bellows, ceramic seat and carbon washer. The pump is
to be close-coupled to ____ hertz, ____ phase, ____ cycle, ____
voltage, 1750 RPM, (drip-proof) (totally enclosed) (hazardous location)
motor with a stainless steel shaft. The motor shall be designed to
Aurora specifications. The pump-motor combination is to be flange
mounted to a galvanized steel, open top receiver with a capacity of
50 gallons and shall be equipped with a float valve assembly. The
receiver shall be provided with a drain plug and a 1" overflow below
the inlet to allow an air gap to prevent back-siphonage. A 1"drain
shall be furnished in the receiver.
LIC
E
Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice.
A-02-1028 07/30/13 © 2013 Pentair Ltd. All Rights Reserved.
UT
HY
IT
800 AIRPORT ROAD, NORTH AURORA, ILLINOIS 60542 WWW.AURORAPUMP.COM
ISO 9001
ST
DR
AU
IN
19 17
ST
EGI
ER E D Q U
TY SYSTEM
ALI
R
NOTES:
1. Dimensions and weights are approximate.
2. All dimensions are in inches and may vary ± 1/8".
3. Frame sizes and motor weights 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, receiver and motor weight for unit weight.
6. Not for construction purposes unless certified.
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