A KSB Company.GIW Industries Inc. • 5000 Wrightsboro Road, Grovetown • GA 30813-9750 USA • Telephone (706) 863-1011 • Fax (706) 860-5897
www.giwindustries.com
GIW LSA Slurry Pump
1/01
When you need the best, put GIW to the test!
If you have questions regarding this product improvement, please contact the
GIW marketing department at ([email protected]).
Premium design hard iron pumps
for long wear life pumping severe
slurries.
Click here for more information.
“Section 9 - LSA Series Slurry Pump”
6/2003 Page
OVERVIEW
LSA Slurry Pumps are designed for severe duties with operating
flows from 100 gallons per minute (25 cubic meters per hour) to
more than 60,000 gpm (14,000 m3/hr).
These high performance, low maintenance slurry pumps are used
in applications such as ore transport, mill discharge, cyclone feed,
tailings, plant process and dredging. A wide range of sizes is
available to handle virtually any slurry transport application.
The LSA’s rugged design features a shell, impeller and liner of
Gasite® white iron. GIW’s Gasite white iron alloys are recognized
worldwide for superior abrasion resistance.
LSA Series Slurry Pumps are constructed with a single wall,
heavy section, and a hard metal wet end for maximum reliability
and ease of maintenance.
The LSA features a split cartridge bearing assembly with spherical
roller bearings and a separate steep angle thrust bearing. Different
hydraulic designs of the impellers and shells are available to
optimize performance for any system and duty requirement.
The standard LSA “S” range consists of single wall, hard metal
pumps. Custom produced (CP) and custom engineered (CE)
configurations are available upon request. These include high
pressure and vertical designs, elastomer linings (vulcanized rubber
or polyurethane), and discharge sizes up to 44 inch (1100 mm).
SHELL HYDRAULIC SHAPESLSA Pumps feature both Annular (A) and Semi-Volute (C) hydraulic
shapes. These may be selected to minimize wear due to
recirculation at the duty point and to optimize efficiency.
IMPELLER TYPESRadial Vane (RV) or conventional warped vane (ME) can be
selected to optimize parameters such as solids passage, suction
performance and efficiency.
WET END CONSTRUCTIONLSA Pumps are low speed, horizontal, end suction pumps with
heavy section thickness. Three and four vane impeller designs
provide optimum solids passage, efficiency and wear
characteristics over a broad operating range.
1
“Section 9 - LSA Series Slurry Pump”
Page 6/2003
The pump features all metal, hydraulic wet end components for long,
predictable wear life. The hydraulic wet end normally consists of a
single shell, an impeller and a suction liner. The suction plate and
liner can be removed without disturbing the discharge piping. The
metal pump design does not require a separate outer shell.
LSA Standard Material Combinations**
2
**Other material options available upon request.
Several wet end constructions are offered. The LSA shell is normally
furnished with an integral hub liner. This is designated as
construction “H”.
The WSO and WBC constructions feature a special wet end fastener
arrangement, which offer higher working pressures and greater
resistance to damage by water hammer.
The TBC and WBC constructions feature a through bolt fastener
arrangement to further increase working pressure ratings.
WSO, WBC and TBC arrangements are particularly favored for
multistage slurry transport systems.
The LSA HP features a shell reinforced with ribs and a plate to
achieve high pressure ratings.
HARD METAL, SEMI-VOLUTE, SINGLE WALL SHELLThe standard wet end configuration for the LSA is a hard metal,
semi-volute, single wall shell. All major wear parts, including the
impeller and suction liner, are cast of high chromium or Gasite®
nickel-chromium white iron.
The CH/ME (semi-volute shell, warped vane impeller) hydraulic
design is standard for the LSA S group and represents the most
common and versatile hydraulic configuration for good wear and
efficiency over a range of operating duties.
Part Name Standard Material
Shell Gasite WD28G
Impeller Gasite WD28G
Suction Plate Fab Steel, Ductile Iron
Suction Liner Gasite 18G
Pedestal Fab Steel
Shaft 4150 Steel
Stuffing Box Gray Iron 35C
Shaft Sleeve Carbide Coated Steel
Gland Gray Iron 35C
Lantern Ring Teflon
Bearing Housing Gray Iron 35C
“Section 9 - LSA Series Slurry Pump”
6/2003 Page
Other custom produced hydraulics, including different shell
shapes and impeller vane designs, are available to address wear
caused by unusual operating conditions.
WET END MATERIALSLSA Series Slurry Pumps are available in a variety of materials.
GIW’s hard metal white iron alloys for most pumping conditions
are Gasite 18G, Gasite 27G and Gasite WD28G. Other specialty
white irons are available. These include Gasite WD29G for
handling large rocks and Gasite 38G for extremely abrasive,
low stress conditions. Polyurethane and other elastomers are
also available as liners.
For more information or selection recommendations, call your
GIW representative.
Materials specifications are located after ”Section 2”.
BHN is the Brinell Hardness Number, and Rc is the Rockwell
“C” scale for hardness.
GASITE ® WD28G
The standard material for LSA “S” metal wear parts is a
proprietary high chromium white iron called Gasite WD28G. It
exceeds the requirements of ASTM specification A 532-93a,
Class III, Type A.
Gasite WD28G offers a material hardness of 600 BHN (58 Rc)
and tensile strength of 85-115 ksi. This high chromium material
offers excellent wear life along with resistance to moderate
chemical corrosion when applied in slurries with pH as low as
five.
The microstructure of Gasite WD28G is chromium carbides in a
chromium rich matrix of tempered martensite and some
austenite.
GASITE ® 18G
LSA metal wear parts are available in Gasite 18G, an abrasion
resistant, chromium-molybdenum white iron. Gasite 18G is a
proprietary material that conforms in chemistry and physical
properties to ASTM specification A 532-93a, Class I, Type D.
3
“Section 9 - LSA Series Slurry Pump”
Page 6/2003
Gasite 18G offers 650 BHN (59 Rc) and a tensile strength of 80-
120 KSI. This premium material is either heat or cryogenically treated
to increase its hardness, for maximum wear resistance.
The microstructure of Gasite 18G consists of eutectic and secondary
carbides in a mostly martensitic matrix.
GASITE ® 27G
Gasite 27G, an abrasion resistant, high chromium white iron, is well
suited for the manufacture of wear parts in applications that require
abrasion resistance and some degree of corrosion and heat
resistance.
Gasite 27G is a proprietary metal that conforms in chemistry and
physical properties to ASTM specification A532-93a, Class III, Type
A. It offers a material hardness of 600 BHN (56.5 Rc) and a tensile
strength of 80-110 ksi.
POLYURETHANE
Polyurethane is a two part elastomer resin that has higher hardness
and strength than most rubbers. It is the standard material for LSA
elastomer lined impellers. Polyurethane exhibits excellent resistance
as an abrasion resistant material. It has been used mainly in
applications where particles are smaller than 0.04 inch (one
millimeter) or 16 mesh.
4
SHAFT SEAL DESIGN
The shaft seal design of slurry pumps is determined by the
presence of solids and the availability of purge water. The two
basic configurations for the LSA are the stuffing box and the
mechanical seal.
STUFFING BOXThe LSA stuffing box is designed to be operated with an external
water flush to prevent the solids from entering the sealing area where
they would cause premature damage to the shaft sleeve and
premature packing wear. This fluid also lubricates and cools the
packing.
Flush water is introduced forward of all packing to ensure only clear
water at the sealing surface. If flush water usage must be reduced,
the Low Flow, or Type KE, Stuffing Box is available as an option.
The Low Flow Stuffing Box features two rings of packing forward of
the seal water ring to limit seal water usage.
“Section 9 - LSA Series Slurry Pump”
6/2003 Page
Seal water should be available at 10 psi (0.7 bar) above maximum
pump discharge pressure and in the flow rates shown below:
In operation, stuffing box purge water should be regulated to
maintain a minimum of 10 psi (.7 bar) above discharge pressure.
The amount of flow from the box should be adjusted to the mini-
mum amount required to provide cooling. This often results in
lower flow rates than shown, which are maximum requirements
for seated packing.
Flow control of stuffing boxes is not recommended. It may result
in abnormally high sealing pressures and lead to jamming of the
packing, excessive heat and wear.
The standard stuffing box is constructed of gray iron. The standard
shaft sleeve is constructed of steel with a flame sprayed, nickel-
chromium, carbide coating.
MECHANICAL SEALS
Although mechanical seals require special selection, operation
and maintenance, they are becoming more common in slurry
applications where zero dilution of the product is required, where
no service water is available and where product leakages are not
tolerated for safety or environmental reasons.
Mechanical seals offer pump operation without the need for seal
water. This removes the potential for product dilution or leakage.
Many mechanical seals operate without an additional cooling
medium, although some designs may require an external fluid
source.
5
2-15/16 12 (0 .47) 3 .0
3-15/16 20 (4.5) 4 .0
4-17/16 25 (5/7) 5 .0
5-7 /16 30 (6.8) 6 .0
6-7 /16 55 (2.16) 11.0
7-3 /16 55 (2.16) 11.0
9 85 (3 .35) N /A
S tuffing B ox M ax im um S eal W ater R equirem ents in gpm (m 3/hr)
N om ina l
S haft S iz e S tandard F orw ard
F lus h
(0 .43)
(0 .43)
N /A
M a x im u m S e a l W a te r R e q u ire m e n ts
(0 .12)
(0 .91)
(1 .1)
(1 .3)
S tu ffing B ox Ty pe
K E Low F low
“Section 9 - LSA Series Slurry Pump”
Page 6/20036
DRIVE ARRANGEMENTSThe standard drive arrangements for LSA Slurry Pumps are
overhead and side mounted V-belt. Custom configurations include
direct coupled, and gear reducer drives.
Pumps with discharge sizes of 16 inches (400 millimeters) and below
often use V-belt drives. Pumps with discharge sizes of 18 inches
(450 millimeters) or larger or that require more than 400 horsepower
usually use gear reducers.
RECOMMENDED SPARE PARTSBecause of the wear caused by the slurry, many of the wet end
components of the pump may require replacement during normal
maintenance. Inspection or overhaul of mechanical components
may also lead to the replacement of other parts.
The following spare parts are recommended for normal maintenance
and inspection. Quantities depend on the severity of the slurry duty
and the number of units operating. Maintenance practices may
favor keeping fully built subassemblies or complete pumps on hand
in some cases.
Previous experience in similar duties often provides the best
experience. For specific recommendations, call your GIW
representative.
Wet End Stuffing Box Bearing Assembly
Impeller Shaft Sleeve Bearings and adapters
Shell Lantern ring V-Ring seals
Liner Packing Gasket kit
Gasket Kit Gasket Kit Bearing Oil
SPECIFICATIONS FOR LSA S SLURRY PUMPS
BEARINGS
Two double row, spherical roller bearings carry the drive and impeller
end radial loads. A separate spherical roller thrust bearing carries
the hydraulic axial thrust without any requirement for thrust
compensating clearing vanes on the impeller.
The radial bearings are fixed to the shaft with tapered sleeves and
locknuts. The thrust bearing is preloaded with springs to provide
constant minimum thrust load required by this type bearing. The
bearing housing is split for ease of maintenance and assembly.
“Section 9 - LSA Series Slurry Pump”
6/2003 Page
For pumps with mechanical seals, an optional, limited end float
arrangement is available. It replaces the drive end spherical radial
bearing with a radial, taper roller bearing. In this case, the forward
movement can be reduced to less that 0.010 inch (0.25 millimeter).
LUBRICATIONLSA bearing assemblies are designed for use with oil. This
provides the lubrication and cooling required for long life of the
the large spherical roller bearings. The separate thrust bearing
has lubrication requirements that can not be met with grease.
Factory assembled units are filled with GIW Blue 150 Synthetic
oil. This proprietary lubricant provides corrosion protection during
shipping and storage as well as the the film strength required for
initial start up of the pump. Available as a service part, GIW Blue
extends the change interval to double that of conventional mineral
oils to minimize routine maintenance downtime. Contact a GIW
representative for details.
Certain larger bearing assemblies are availalbe with the GIW Oil
Recirculation Kit. This optional system removes excess oil from
the thrust bearing area for lower oil temperatures under extreme
operating conditions.
BUILT-IN BEARING ISOLATOR SYSTEM
Standard LSA cartridge and pillowblock bearing assemblies
feature a Built-in Bearing Isolator System. Designed by GIW,
this is a labyrinth seal built into the end cover plus a V-ring seal
and protective flinger. This system extends the life of the bearing
assemblies by preventing contaminants from entering through
the seal area. It also reduces oil leakage and lowers operating
temperatures.
With this system, the breather is eliminated since the labyrinth
allows the bearing assembly to balance internal pressures.
The system replaces the grease purged, dual lip seal
arrangement. It is featured on all standard 2-15/16 through 9”
LSA housings produced after Aug. 1, 1996.
IMPELLER
Standard impellers are of four vane, double shrouded, warped
blade design. Three vane impellers for larger sphere passage
are also available.
Impellers are threaded directly to the shaft without separate
adapters. The impeller is sealed against the shaft sleeve using
double gaskets.7
“Section 9 - LSA Series Slurry Pump”
Page 6/2003
INSPECTION
Pump inspection and routine maintenance of the impeller and suction
may be accomplished without removing or disturbing the discharge
pipe to minimize pump down time.
MECHANICAL END
LSA Series Slurry Pumps feature eight basic bearing assembly sizes
on six pedestals with rated power up to 6,000 horsepower (4500
kilowatts). LSA’s also feature a high degree of interchangeability.
For example,the five wet end sizes of the S1 group are handled by
three bearing assemblies and two pedestals. This allows
standardization of plant mechanical components, which simplifies
maintenance programs and enables changes to vary operating
conditions at minimal cost.
The bearing assembly and pedestal are designed to accomodate a
range of pump sizes. For example, the LSA 25 pedestal can be
used for the LSA 4X6-25 through the LSA 12x12-32 pump. This
results in an allowable flow range of 250 to 7,500 gallons per minute
(50 to 1.700 cubic meters per hour).
PEDESTAL
The pedestal is a steel fabrication that supports the bearing assembly,
shaft seal, pump wet end and, where applicable, the overhead motor
mount.
The shell and bearing assembly are aligned on machined fits in the
pedestal.
SHELL
LSA Series Slurry Pumps feature a one piece, heavy walled shell
cast of white iron. It is designed to deliver maximum wear life. It is
offered with an integral back liner, or an optional separate wear part.
SUCTION LINER
LSA Series Slurry Pumps use a two piece suction liner arrangement
with a steel or ductile iron plate and separate white iron suction liner.
To increase wear life, the liner can be rotated at routine maintenance
intervals. The liner is sealed to the shell with a tapered, Neoprene
gasket.
8
Product Introduction LSA S
Series Overview
LSA Series Slurry Pumps are designed for se-vere duties with operating flows from 100-60,000
gpm (20-14,000 m3/h). Total dynamic head isto 300 ft. (90m) per stage and power rating is
up to 4,000 hp (3.000kW). Custom produced
(CP) and custom engineered (CE) pumps areavailable when the LSA S Range pumps do not
meet the required specifications.
Fields of Application
The LSA S slurry pump is a severe-duty slurrypump for highly abrasive slurries. Applications
include run-of mine material transfer, grindingcircuit recirculation, process pumping and
tailings disposal for mining, dredging and other
industrial operations.2-26 in (50-650mm) Discharge
DesignLSA S slurry pumps are low-speed, horizontal,
end suction, modified volute casing pumps. TheLSA S’s accept three or four vane impeller designs
for optimum solids passage, suction performance,
efficiency and wear characteristics over a broadoperating range. The simple, single wall
construction and heavy section, hard metal wetend combined with the cartridge bearing assembly
provides maximum reliability and ease of
maintenance.
Plug Type
D......2.0
F.......3.5S
G......2C4.5
H......2C5.0
J.......6.5
K......7.75
Seal Type
F.......Packing, Forward Flush
K.......Packing. Low Flow
Shaft Size
1.......2-15/16 (75 mm)
2.......3-5/16 (100 mm)
3.......4-7/16 (110 mm)
4.......5-7/16 (140 mm)
5.......6-7/16 (160 mm)
6.......7-3/16 (180 mm)
9.......9 (230 mm)
Impeller Hydraulic Type
RV Radial Vane
ME Conventional Warped Vane
Shell Hydraulic Type
A Annular
C Semi-Volute
Designation
LSA 8x10-32.4 G F C/3 ME.1 H
Pump Type
Discharge Size
Suction Size
Impeller Diameter
Shaft Size
Plug Type
Seal Type
Shell Hydraulic Type
Number of Impeller Vanes
Impeller HydraulicType
Hydraulic Number (If more than one)
Construction Type
A KSB Company.
Normal temperature limit is 150º F (65ºC).
Consult the factory for materials and configu-
rations for temperatures above 150º F.
LSA S SpecificationsCapacities (Qmax.) 100-60,000 gpm
20-14,000 m3hHeads (H max.) 300 ft
90 m
Discharge Positions
Rotation direction is clockwise from the drive
end. A vertical discharge is standard.
Materials
*Wet end also available in M011A - Gasite 4G
*
A KSB Company.
P a r t N o . I t e mM a t e r i a l C o d e
M O 1 0 A S t a n d a r d
1 0 1 S h e l l G a s i t e W D 2 8 G
2 3 0 I m p e l l e r G a s i t e W D 2 8 G
1 6 - 1 S u c t i o n P l a t e F a b S t e e l / D u c t i l e I r o n
1 3 - 1 9 S u c t i o n L i n e r G a s i t e W D 2 8 G
3 3 2 P e d e s t a l F a b S t e e l
2 1 0 S h a f t 4 1 5 0 S t e e l
4 5 1 S t u f f i n g B o x G r e y I r o n 4 0 C
5 4 2 S h a f t S l e e v e C a r b i d e C o a t e d S t e e l
4 5 2 G l a n d D u c t i l e I r o n 6 5 D
4 5 8 L a n t e r n R i n g T e f l o n
3 5 0 B e a r i n g H o u s i n g G r e y I r o n 3 5 C
Assembly
Number
Discharge
Position
Intervals
Vane
Number
& Type
in mm psi bar in mm Degrees
0517x 2x3-21 50x80-530 215 14.82 1.0x1.5 25x40 45 4RV
0518x 3x4-21 80x100-530 215 14.82 1.0X1.5 25X40 45 4RV
0519x 4X6-21 100x150-530 167 11.51 2.5X2.8 63X71 45 4RV
0500x 4X6-25 100x150-635 167 11.51 1.2x3.5 32X89 22.5 4RV
0516x 4X6-25 100x150-635 167 11.51 1.5x2.3 39x58 22.5 4ME
0501x 6x8-25 150x200-635 167 11.51 2.8x3.6 71x92 22.5 4ME
0521x 8x10-25 200x250-635 167 11.51 2.4x4.9 61x125 22.5 4RV
0502x 8x10-32 200x250-810 155 10.69 3.5x4.7 89x120 22.5 4ME
0503x 8X10-32 200x250-810 155 10.69 4.5x4.7 114x120 22.5 3ME
0504x, 0506x 8x10-32 200x250-810 155 10.69 3.5x4.7 89x120 15 4ME
0505x, 0507x 8x10-32 200x250-810 155 10.69 4.5x4.7 114x120 15 3ME
0522x, 0525x 10x12-32 250x300-810 141 9.72 3.7x6.7 95X171 15 4RV
0508x, 0510x 10x12-36 250x300-910 147 10.14 4.0x6.7 102x171 15 4ME
0509x, 0511x 10x12-36 250x300-910 147 10.14 6.3x6.7 160x171 15 3ME
0514x, 0512x 12x14-36 300x350-910 133 9.17 5.3x8.7 133x222 15 4ME
0513x, 0515x 12x14-36 300x350-910 133 9.17 6.5x8.7 167x222 15 3ME
0527x 16x16-39 400x400-990 110 7.58 5.8x8.2 148x209 15 4ME
0530x, 0532x 16x16-39 400x400-990 110 7.58 4.4x8.7 112x222 45 4ME
0534x, 0536x 16x18-44 400x450-1115 135 9.31 5.5x7.6 141x193 18 4ME
0535x, 0537x 16x18-44 400x450-1115 135 9.31 7.6X8.2 193x208 18 3ME
0538x, 0540x 18x18-44 450x450-1115 125 8.62 6.3x11.6 161x295 18 4ME
0539x, 0541x 18x18-44 450x450-1115 125 8.62 8.8x11.6 225x295 18 3ME
0546x, 0547x 20x20-48 500x500-1220 95 6.55 9.7x11.7 247x298 45 4RV
0548x 20x20-48 500x500-1220 95 6.55 9.7x11.7 247x298 15 4RV
0549x 20x24-48 500x600-1220 85 5.86 6.1x12.8 155x326 15 4ME
0550x 22x24-54 550x600-1370 200 13.79 8.1x13.5 208x343 18 4ME
0551x 26x28-58 650x700-1470 85 5.86 8.6x11.7 218x298 15 4ME
Normal Size
LSA S RANGE PUMP INFORMATION TABLE
Free Passage
Maximum Operating
Pressure
15
50
RP
M5
50
RP
M1
30
0 R
PM
13
00
RP
M1
30
0 R
PM
12
50
RP
M
90
0 R
PM
75
0 R
PM
90
0 R
PM6
75
RP
M
60
0 R
PM
15
50
RP
M
2 X 3
LSA 2
1
3 X 4
LSA 2
1
4 X 6
LSA 2
5
6 X 8
LSA 2
58 X
10 L
SA 25
10 X 1
2 LSA 3
2
12 X 1
4 LSA 3
6
16 X 1
6 LSA 3
9
18 X 1
8 LSA 4
4
20 X 2
4 LSA 4
822 X
24 L
SA 54
26 X 2
8 LSA 5
8
4 X 6
LSA 2
1
CU
BIC
ME
TE
RS
PE
R H
OU
R
GA
LL
ON
S P
ER
MIN
UT
E (
US
)
Sta
nd
ard
LS
A H
ea
d-F
low
Se
lec
tio
n C
ha
rt f
or
Cla
ss
On
e D
uty
(Fo
r u
se
as a
fir
st
gu
ide
on
ly -
Co
nta
ct
a G
IW R
ep
rese
nta
tive
with
yo
ur
sp
ecific
ap
plic
atio
n)
RP
M S
HO
WN
IS
MA
XIM
UM
RE
CO
MM
EN
DE
D F
OR
EA
CH
CL
AS
S O
F D
UT
Y
TOTAL DYNAMIC HEAD (METERS)
TOTAL DYNAMIC HEAD (FEET)
3
0
40
50
60
80
10
0
20
0
30
0
5
00
7
00
1
00
0
20
00
40
00
6
00
0
10
00
0
10
0
20
0
3
00
5
00
70
0
10
00
2
00
0
4
00
0
60
00
1
00
00
20
00
0
4
00
00
6
00
00
30
0
20
0
80
15
0
10
0
60
50
15
40
30
20
10
8 6 5 4
10
00
50
80
0
60
0
50
0
20
40
0
30
0
20
0
10
0
60
40
30
20
A KSB Company.
A KSB Company.GIW Industries Inc. • 5000 Wrightsboro Road, Grovetown • GA 30813-9750 USA • Telephone (706) 863-1011 • Fax (706) 860-5897
www.giwindustries.com
GIW Model LSA S PumpsLow Maintenance, Severe Duty, Abrasion ResistantLow Maintenance, Severe Duty, Abrasion Resistant
Wear Parts
Pump Seal
Impeller is designed for wear-resistant operation in
highly abrasive slurries using GIW’s flow simulation
computer program.
Two aramid gaskets aid in the removal of the
impeller.
Replaceable suction liner facilitates pump internal
inspection and minimizes wear part usage cost.
Liner can be rotated at intervals to increase wear life.
Pump shell is computer designed to optimize wear
and efficiency.
Replaceable wear plate maximizes stuffing box life.
Shaft sleeve with fused carbide hard coating to
maximize packing life.
Mechanical End
Shaft is AISI 4150 steel and straight cut with no
tapers. Multiple material options available.
10
12
1
8
6
6
5
4
3
2
1
Split-cartridge bearing assembly offers ease of
inspection and maintenance.
Accurate impeller clearance adjustments are easily
made with the adjusting screw.
Labyrinth seals protect bearings.
Sight glass and temperature gauge allow monitoring.
Quick Alignment
Rabbet fits machined in the pedestal support the shell
and provide component alignment.
Interchangeability
To optimize wear life and efficiency, various hydraulic
design and material options can be used on the same
mechanical end.
14
11
10
12
9
11
7
7
5
4
2 3
8
14
Spring retainer ring locates the thrust bearing pre-
load springs for correct axial thrust load.
Adapter mounted radial bearings are a heavy duty,
self-aligning, double-row, spherical roller-type
design.
9
13
13
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