Lenntech
info@lenntech.com
www.lenntech.com
Tel. +31-15-261.09.00
Fax. +31-15-261.62.89
68 Frame Block-Style
Stainless Steel
Plunger Pump
Standard
Models
6831
6831K
Flushed
Models
FEATURES
●
Triplex plunger design delivers high efficiency and low
pulsation.
●
Durable dual V-Packings are lubricated and cooled by
pumped liquid.
●
Pre-Set Lo-Pressure seals provide secondary protection
against external leaks and require no packing adjustment.
●
Special high-density, polished, concentric ceramic plungers
provide a true wear surface and extended seal life.
●
Specially formulated seals and V-Packings offer unmatched
performance and seal life.
●
Wet-end is easily serviced without entering crankcase.
SPECIFICATIONS
U.S. Measure
Metric Measure
Flow ..................................................................40 gpm
(151 l/m)
Pressure Range ..............................100 to 2300 psi
(7 to 160 bar)
Inlet Pressure Range* ..............Flooded to 50 psi (Flooded to 3.5 bar)
Max. RPM ...................................................... 625 rpm
(625 rpm)
Bore . ...................................................................1.575"
(40 mm)
Stroke. ................................................................2.579"
(65.5 mm)
Crankcase Capacity...................................... 10 Qts.
(9.46 l)
Maximum Liquid Temperature ..................140°F
(60°C)
Above 130F call Cat Pumps for inlet conditions and elastomer recommendations.
Inlet Ports (2) ........................................ 1-1/2" NPTF
(1-1/2" NPTF)
Flushing Ports (2)* .................................. 1/2" NPTF
(1/2" NPTF)
Discharge Ports (2) ..................................... 1" NPTF
(1" NPTF)
Shaft Diameter . ..............................................1.772"
(45 mm)
Weight .............................................................355 lbs.
(161 kg)
Dimensions .................. 29.5 x 24.33 x 12.00"
(750 x 618 x 305 mm)
*Flushed K Models: Special ported inlet manifold permits an external flush
liquid providing cooling for Hi-Temp liquids and lubrication with low lubricity
liquids.
ELECTRIC HORSEPOWER REQUIREMENTS
FLOW
All High Pressure Systems require a primary pressure regulating device (i.e. regulator,
unloader) and a secondary pressure relief device (i.e. pop-off valve, relief valve). Failure
to install such relief devices could result in personal injury or damage to pump or
property. CAT PUMPS does not assume any liability or responsibility for the operation
of a customer’s high pressure system.
Read all CAUTIONS and WARNINGS before commencing service or operation of any
high pressure system. The CAUTIONS and WARNINGS are included in each service
manual and with each Accessory Data sheet. CAUTIONS and WARNINGS can also be
viewed online at www.catpumps.com/cautions-warnings or can be requested directly
from CAT PUMPS.
RPM
PRESSURE
psi
1000
psi
1500
psi
2000
psi
2300
U.S.
gpm
l/m
bar
70
bar
105
bar
140
bar
160
40
30
25
20
151
114
95
76
27.4
20.6
17.2
13.7
41.1
30.9
25.7
20.5
54.8
41.1
34.3
27.5
63.0
47.3
39.4
31.5
DETERMINING
THE PUMP R.P.M.
DETERMINING
THE REQUIRED H.P.
DETERMINING
MOTOR PULLEY SIZE
Rated gpm
Rated rpm
gpm x psi
1460
Motor Pulley O.D.
Pump rpm
=
=
=
625
470
391
331
“Desired” gpm
“Desired” rpm
Electric Brake
H. P. Required
Pump Pulley O.D.
Motor rpm
See complete Drive Packages [Inclds: Pulleys, Belts, Hubs, Key] Tech Bulletin 003.
Refer to pump Service Manual for repair procedure and additional technical information.
PARTS LIST
ITEM
2
5
6
7
8
10
11
12
13
15
16
17
20
21
22
25
31
32
33
34
38
39
40
41
42
48
49
50
51
53
54
64
65
69
70
75
88
90
95
96
97
98
99
100
106
108
110
111
112
113
114
117
118
126
127
128
155
156
157
159
160
162
163
164
166
167
168
170
171
172
173
174
175
185
188
193
250
255
259
275
283
290
PART NUMBER
6831 MATL
6831K MATL
43048
89728
15847
19934
29443
29444
11443
43642
126594
126595
29441
29442
29444
126612
126560
126593
29440
828710
43211
14177
126743
129343
27769
89627
15847
19934
25625
23170
29438
129386
45303
43282
29481
48735
126588
29454
43865
45676
43921
89778
20189
11345
11375
44085
44084
703084
44113
44740
45381
701321
—
701116
701632
701328
701329
701327
89694
701077
45367
44609
44741
704480
48860
20137
48362
45369
48860
20137
44756
48363
26142
14330
44612
44108
44109
44728
44729
44644
89827
11747
48364
701432
87951
701431
701279
89694
29445
33243
29477
990014
34314
6124
STL
S
S
S
AL
NBR
NBR
S
STCP R
STCP R
STL
STL
NBR
BBHS
STCP R
STCP R
FCM
—
ABS
NBR
STCP R
RBR
ABS
S
S
S
STCP
NBR
AL
NBR
AL
S
CM
SSZZ
STCP R
NBR
S
S
CC
SS
PTFE
NBR
FPM
SS
SS
D
NBR
FPM
SS
SS
—
SS
NBR
FPM
PTFE
SS
S
SS
SS
STG*
SFG
SS
NBR
FPM
D
SS
NBR
FPM
SS
D
NBR
FPM
SS
SS
SS
PVDF
SS
SS
NBR
FPM
D
SS
S
SS
S
S
AL
STZP
STZP
STL
—
—
43048
89728
15847
19934
29443
29444
11443
43642
126594
126595
29441
29442
29444
126612
126560
126593
29440
828710
43211
14177
126743
129343
27769
89627
15847
19934
25625
23170
29438
129386
45303
43282
29481
48735
126588
29454
43865
45676
43921
89778
20189
11345
11375
44085
44084
703084
44113
44740
45381
—
701322
701116
701632
701328
701329
701327
89694
—
45367
44609
44741
704480
48860
20137
48362
45369
48860
20137
44756
48363
26142
14330
44612
44108
44109
44728
44729
44644
89827
11747
48364
701432
87951
701431
701279
89694
29445
33243
29477
990014
34314
6124
STL
S
S
S
AL
NBR
NBR
S
STCP R
STCP R
STL
STL
NBR
BBHS
STCP R
STCP R
FCM
—
ABS
NBR
STCP R
RBR
ABS
S
S
S
STCP
NBR
AL
NBR
AL
S
CM
SSZZ
STCP R
NBR
S
S
CC
SS
PTFE
NBR
FPM
SS
SS
D
NBR
FPM
SS
—
SS
SS
NBR
FPM
PTFE
SS
S
—
SS
STG*
SFG
SS
NBR
FPM
D
SS
NBR
FPM
SS
D
NBR
FPM
SS
SS
SS
PVDF
SS
SS
NBR
FPM
D
SS
S
SS
S
S
AL
STZP
STZP
STL
—
—
DESCRIPTION
Key (M14x9x90)
Screw, HH (M10x40)
Lockwasher (M10)
Washer, Flat (M10)
Cover, Bearing, Outer
O-Ring,Bearing Cover - 70D
Seal, Oil, Crankshaft - 70D
Washer, Shim (M120x0.3)
Washer, Shim (M120x0.3)
Washer, Shim (M120x0.5)
Bearing, Roller
Cover Bearing, Inner
O-Ring,Bearing Cover - 70D
Assembly, Connecting Rod (Inclds: 21, 22)
Washer, Locking
Washer, Shim (M10.5x1.5)
Crankshaft, Dual Shaft
Protector, Oil Cap w/Foam Gasket
Cap, Oil Filler
O-Ring, Filler Cap - 70D
Bolt, Eye (M12) (For Lifting Pump Only)
Gasket, Flat Flex
Stick, Dip
Screw, HH (M10x30)
Lockwasher (M10)
Washer, Flat (M10)
Plug, Drain (1/4"x19BSP)
O-Ring, Drain Plug - 70D
Cover, Rear
Gasket, Rear Cover
Crankcase (Inclds: 34, 54)
Pin, Guide
Pin, Crosshead
Rod, Plunger
Washer, Oil Seal
Seal, Oil, Crankcase - 80D
Slinger, Barrier
Washer, Keyhole (M16)
Plunger (M40x145)
Stud, Plunger Retainer (M10x135)
Back-up-Ring, Plunger Retainer
O-Ring, Plunger Retainer - 70D
O-Ring, Plunger Retainer - 70D
Gasket, Plunger Retainer
Retainer, Plunger (M10)
Retainer, Seal
Seal, LPS, w/SS-Spg
Seal, LPS, w/SS-Spg
Spacer, LPS
Manifold Inlet, Block-Style
Manifold Inlet, Block-Style, Flushed
Plug, Inlet Manifold (1-1/2" NPTM)
O-Ring, Spacer
O-Ring, Spacer
Back-up-Ring, Spacer
Spacer, Inlet
Screw, HSH (M16x110)
Plug (1/4" NPTM)
Adapter, Female
V-Packing
V-Packing
Adapter, Male
O-Ring, V-Packing Spacer, Inner - 90D
O-Ring, V-Packing Spacer, Inner - 70D
Back-up-Ring, V-Packing Spacer
Spacer, V-Packing
O-Ring, V-Packing Spacer, Outer - 90D
O-Ring, V-Packing Spacer, Outer - 70D
Pin, Guide
Back-up-Ring, Seat
O-Ring, Seat - 80D
O-Ring, Seat
Seat
Valve
Spring
Retainer, Spring
Washer, Retainer
Spring, Coil
O-Ring, Valve Plug - 90D
O-Ring, Valve Plug - 90D
Back-up-Ring, Valve Plug
Plug, Valve
Screw, HSH (M10x30)
Manifold, Discharge, Block-Style
Screw, HSH (M12x100), Lower
Screw, HSH (M16x110), Upper
Protector, Shaft
Kit, Mount (Included w/Pump)
Rail, Box (Included w/Pump)
Hub, “B”, M45, Keyway [See Tech Bulletin 003]
Kit, Oil Drain (3/8" x 48")
Gasket, Liquid (3 oz.)
QTY
1
8
8
8
2
2
2
0-2
0-2
0-2
2
2
2
3
3
6
1
1
1
1
1
1
1
8
8
8
1
1
1
1
1
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
1
1
1
6
6
6
3
6
3
3
6
6
3
3
3
6
3
3
3
2
6
6
6
6
6
6
6
6
6
6
6
6
6
36
1
4
8
1
2
2
1
1
1
EXPLODED VIEW
250
5
6
7
20
8
10
11
22
21
16
17
175
38
32
33
41
42
34
174
173
172
171
170
168
167
166
164
163
162
185
39
31
15
49
283
50
53
51
17
16
DISCHARGE
15
13
188
12
160
11
106
166
127
127
128
155
156
174
110
117
170
172
8
76
167
173
2
10
108
162
163
164
168
171
175
48
25
54
193
40
126
INLET
5
64
111
112
113
114
113
157
156
159
118
65
69
75
112
70
88
95
90
259
255
96
99
98
97
100
Models
Standard - 6831
Flushed - 6831K
April 2012
6831 MATL
299
—
300
—
310
—
—
370
390
391
392
—
6831K MATL
Head, Complete, Block-Style
1
Head, Complete, Block-Style, Flushed
1
Kit, Seal (Inclds: 97,106,112,113,127,155,156,159)
1
Kit, Seal (Inclds: 97,106,112,113,127,155,156,159)
1
Kit, Valve (Inclds: 162,163,164,166,167,168,170,172,173)
2
Kit, Valve (Inclds: 162,163,164,166,167,168,170,172,173)
2
Assy, Crankcase, Cast Iron Conversion
1
Assembly, Flushing, 5 gal., 115V, 1.1 Amp, 1/2" NPT
1
C.A.T. (Inlet pressure stabilizer for RO and boosted inlet applications)
1
Adapter (2 per C.A.T.) (See Data Sheet for complete selection)
2
Elbow Assy used with Adapter Assy 714506
1
Plunger Pump Service DVD
1
Oil, Twin Pack (Two 2.5 gal.) ISO-68 Hydraulic
1
(Fill to specified crankcase capacity prior to start-up)
—
6119 —
6119 —
Lubricant, Antiseize (1 oz.)
1
Bold print part numbers are unique to a particular pump model. Italics are optional items. R Components comply with RoHS Directive.
*Review individual parts in each kit for material code identification.
See Tech Bulletin 002, 003, 024, 036, 074, 077, 083, 084, 095 and 105 for additional information.
C.A.T. highly recommended for pressurized inlet, R.O. and industrial applications.
MATERIAL CODES (Not Part of Part Number): ABS=ABS Plastic AL=Aluminum BBHS=Brass/High Strength CC=Ceramic CM=Chrome-Moly
D=Acetal F=Cast Iron FCM=Forged Chrome-moly FPM=Fluorocarbon NBR=Medium Nitrile (Buna-N) PTFE=Pure Polytetrafluoroethylene PVDF=Polyvinylidene Fluoride
S=304SS SS=316SS SSZZ=316SS/Zamak SFG=Special Blend FPM STG=Special Blend PTFE White STL=Steel
STCP=Steel/Chrome Plated STZP=Steel/Zinc Plated
910003
—
701647
33708
34017
31955
819010
—
714500
714506
701828
6575
6105
SS
—
NBR*
FPM
NBR
FPM
F
—
SS
SS
SS
—
—
—
910004
701647
33708
34017
31955
819010
990663
714500
714506
701828
6575
6105
—
SS
NBR*
FPM
NBR
FPM
F
—
SS
SS
SS
—
—
Models 6831, 6831K
3
5
1
3
6
4
2
5
1 Dipstick offers top access for easy oil level
check.
2 Special concentric, high density, polished,
solid ceramic plungers provide a true wear
surface and extended seal life.
3
Manifolds are 316 SS block-style for longterm, continuous-duty and corrosion
resistance.
4 Standard Models: Lo-Pressure Seals and
V-Packings are completely lubricated and
cooled by the liquids being pumped.
Flushed Models: permits external flush
for added cooling with high temperature
liquids and lubrication with low lubricity
liquids.
Lenntech
5
6
www.lenntech.com
For International Inquiries go to www.catpumps.com and navigate to the “Contact Us” link.
316 stainless steel valves, seats and springs
provide corrosion-resistance, ultimate
seating and extended life.
Specially formulated, Cat Pump exclusive,
V-Packings offer unmatched performance
and seal life.
Tel.
.09.00
PN 993130 Rev D 4/12 12136