Document 10847398

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Lenntech
info@lenntech.com
www.lenntech.com
Tel. +31-15-261.09.00
Fax. +31-15-261.62.89
®
38 Frame Block-Style
Stainless Steel
Plunger Pump
Standard
Models
Flushed
Models
38 21 , 3 8 31
38 21K, 38 31K
SPECIFICATIONS
MODEL 3821, 3821K
FEATURES
Superior Design
Triplex plunger design provides smoother liquid flow.
Oil bath crankcase assures optimum lubrication.
Close tolerance concentricity of the ceramic plunger maximizes
seal life.
Standard Models: Lo-Pressure Seals and V-Packings are
completely lubricated and cooled by the liquid being pumped.
K Models: Special Flushed Inlet Manifold permits flush for added cooling
with high temperature liquids and lubrication with low lubricity liquids.
Quality Materials
Precision design 316 stainless steel valves are hardened and polished
for ultimate seating and extended valve life.
316 SSL block-style manifolds for strength and corrosion resistance.
Special concentric, high-density, polished, solid ceramic plungers
provide a true wear surface and extended seal life.
Specially formulated, CAT PUMP exclusive, V-Packings offers
unmatched performance and seal life.
Die cast aluminum crankcase provides high strength, minimum
weight and precision tolerance control.
Optional Cast Iron crankcase for hazardous enviroments.
Chrome-moly crankshaft gives unmatched strength and surface
hardness.
Oversized crankshaft bearings with greater loading capacity means
longer bearing life.
Flow. ......................................................23 GPM
Pressure Range.
100 to 2000 PSI
(7 to 140 BAR)
Bore. .........................................................1.260"
WARNING
(32 mm)
(136 L/M)
(40 mm)
(800 RPM)
(48 mm)
(4 L)
(71°C)
Above 130°F 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)
Pulley Mounting
.
Weight.
...................................................167
lbs.
(75 kg)
.............Either ........................24.4
Side
Dimensions.
x(Either
18.11 xSide)
9.37" (620 x 460 x 238 mm)
Diameter
. .......................................
1.378"
(35with
mm)
*Shaft
K Models:
Special Flushed
Inlet Manifold permits
external flush for added cooling
high
temperature liquids and lubrication with low lubricity liquids.
ELECTRIC HORSEPOWER REQUIREMENTS
MODEL
3821
3821K
3831
3831K
FLOW
PSI
PSI
800
1000
U.S.
BAR BAR
GPM L/M
55
70
23
87
N/A
N/A
20
76
N/A
N/A
18
68
N/A
N/A
36
136 19.8
24.7
30
114 16.5
20.6
25
95
13.7
17.2
DETERMINING
THE PUMP R.P.M.
All systems require both a primary pressure regulating device (i.e., regulator, unloader) and
a secondary pressure safety relief device (i.e., pop-off valve, safety valve). Failure to
install such relief devices could result in personal injury or damage to the pump or to
system components. CAT PUMPS does not assume any liability or responsibility for the
operation of a customer ’s high pressure system.
Metric Measure
(87 L/M)
MODEL 3831, 3831K
Flow. ......................................................36 GPM
Pressure Range.
100
to 1200SPECIFICATIONS
PSI
(7 to 85 BAR)
COMMON
Bore.
.........................................................1.575"
Inlet Pressure*.
Flooded to 70 PSI
(Flooded to 4.9 BAR)
RPM . ...................................................800
RPM
Stroke.
......................................................1.890"
Crankcase Capacity. ..............................4.2 Qts.
Maximum Liquid Temperature . ................160°F
Easy Maintenance
Wet-end is easily serviced without entering crankcase, requiring less
time and effort.
Inlet and discharge valve assemblies interchange for easier maintenance
without disturbing piping.
Preset packings mean no packing gland adjustment is necessary,
reducing maintenance costs.
U.S. Measure
DETERMINING
THE REQUIRED H.P.
DETERMINING
MOTOR PULLEY SIZE
PRESSURE
RPM
PSI
PSI
PSI
PSI
1200 1500 1800 2000
BAR BAR BAR BAR
85
105
125
140
N/A 23.7
28.4 31.6
N/A 20.6
24.7 27.4
N/A 18.5
22.2 24.7
29.7 N/A
N/A
N/A
24.7 N/A
N/A
N/A
20.6 N/A
N/A
N/A
800
696
626
800
667
556
Rated G.P. M.
Rated R.P. M.
=
“Desired ” G.P. M.
“Desired ” R.P. M.
GPM x PSI
1460
=
Electric Brake
H. P. Required
Motor Pulley O.D.
Pump R.P.M.
=
Pump Pulley O.D.
Motor R.P.M.
See complete Drive Packages [Inclds: Pulleys, Belts, Hubs, Key] Tech Bulletin 003.
Refer to pump Service Manual
for repair procedure, additional technical information and
“Customer confidence is our greatest asset”
pump warranty .
PARTS LIST
ITEM
3821
2
5
8
9
10
11
15
20
21
22
23
25
31
32
33
34
37
38
40
48
49
50
51
53
54
56
59
64
65
69
70
75
88
90
95
96
97
98
99
100
101
104
105
106
107
110
111
112
113
114
117
118
123
124
126
127
128
141
142
155
156
157
158
159
162
163
164
166
167
168
170
171
172
173
34021
125753
44542
815279
12398
13296
29326
121467
126749
126574
122045
29325
828710
43211
14177
126743
92241
44428
125753
25625
23170
45936
16612
44487
27488
27790
92538
43864
45116
126587
100488
44739
43865
45676
43957
89778
20189
11345
11375
◆ 701490
44085
44084
814279
44106
43875
44826
◆ 701656
45562
44098
44827
◆ 48244
44101
701286
—
701116
701794
701318
◆ 701495
701319
701317
701252
701077
12391
13266
◆ 701657
45563
45564
† 44608
44829
45565
45113
45566
48861
11748
◆ 701749
48362
45674
48371
48860
20137
◆ 701492
48363
26142
14330
◆ 701493
44612
44108
44109
44728
44729
44644
89827
11747
◆ 701494
48364
MATL
STL
S
AL
FBR
NBR
NBR
STL
TNM
STCP R
STCP R
STZP
FCM
—
ABS
NBR
STCP R
—
NBR
S
STCP
NBR
AL
NBR
AL
S
POP
S
CM
SSZZ
STCP R
NBRS
FPM
S
S
CC
SS
PTFE
NBR
FPM
EPDM
SS
SS
PVDF
—
NBR
FPM
EPDM
SS
NBR
FPM
EPDM
SS
SSL
—
SS
NBR
FPM
EPDM
PTFE
SS
SS
SS
NBR
FPM
EPDM
SSL
SS
STG*
SFG
SS
SS
SS
NBR
FPM
EPDM
D
SS
D
NBR
FPM
EPDM
D
NBR
FPM
EPDM
SS
SS
SS
PVDF
SS
SS
NBR
FPM
EPDM
D
3821K
PART NUMBER
MATL
3831
MATL
34021
125753
44542
815279
12398
13296
29326
121467
126749
126574
122045
29325
828710
43211
14177
126743
92241
44428
125753
25625
23170
45936
16612
44487
27488
27790
92538
43864
45116
126587
100488
44739
43865
45676
43957
89778
20189
11345
11375
◆ 701490
44085
44084
814279
44106
43875
44826
◆ 701656
45562
44098
44827
◆ 48244
44101
—
701408
701116
701794
701318
◆ 701495
701319
701317
701252
—
12391
13266
◆ 701657
45563
45564
† 44608
44829
45565
45113
45566
48861
11748
◆ 701749
48362
45674
48371
48860
20137
◆ 701492
48363
26142
14330
◆ 701493
44612
44108
44109
44728
44729
44644
89827
11747
◆ 701494
48364
STL
34021
S
125753
AL
44542
FBR
815279
NBR
12398
NBR
13296
STL
29326
TNM
121467
STCP R 126749
STCP R 126574
STZP
122045
FCM
29325
—
828710
ABS
43211
NBR
14177
STCP R 126743
—
92241
NBR
44428
S
125753
STCP
25625
NBR
23170
AL
45936
NBR
16612
AL
44487
S
27488
POP
27790
S
92538
CM
43864
SSZZ
45116
STCP R 126587
NBRS
100488
FPM
44739
S
43865
S
45676
CC
43921
SS
89778
PTFE
20189
NBR
11345
FPM
11375
EPDM ◆ 701490
SS
44085
SS
44084
PVDF
814279
—
44112
NBR
—
FPM
—
EPDM
—
SS
—
NBR
44113
FPM
44740
EPDM
◆ 46955
SS
45381
—
701286
SSL
—
SS
701116
NBR
701794
FPM
701318
EPDM ◆ 701495
PTFE
701319
SS
701317
SS
701252
—
701077
NBR
—
FPM
—
EPDM
—
SSL
—
SS
45367
STG*
† 44609
SFG
44741
SS
45368
SS
45113
SS
45382
NBR
48860
FPM
20137
EPDM ◆ 701492
D
48362
SS
45369
D
48362
NBR
48860
FPM
20137
EPDM ◆ 701492
D
48363
NBR
26142
FPM
14330
EPDM ◆ 701493
SS
44612
SS
44108
SS
44109
PVDF
44728
SS
44729
SS
44644
NBR
89827
FPM
11747
EPDM ◆ 701494
D
48364
STL
34021
S
125753
AL
44542
FBR
815279
NBR
12398
NBR
13296
STL
29326
TNM
121467
STCP R 126749
STCP R 126574
STZP
122045
FCM
29325
—
828710
ABS
43211
NBR
14177
STCP R 126743
—
92241
NBR
44428
S
125753
STCP
25625
NBR
23170
AL
45936
NBR
16612
AL
44487
S
27488
POP
27790
S
92538
CM
43864
SSZZ
45116
STCP R 126587
NBRS
100488
FPM
44739
S
43865
S
45676
CC
43921
SS
89778
PTFE
20189
NBR
11345
FPM
11375
EPDM ◆ 701490
SS
44085
SS
44084
PVDF
814279
—
44112
—
—
—
—
—
—
—
—
NBR
44113
FPM
44740
EPDM
◆ 46955
SS
45381
SSL
—
—
701408
SS
701116
NBR
701794
FPM
701318
EPDM ◆ 701495
PTFE
701319
SS
701317
SS
701252
SS
—
—
—
—
—
—
—
—
—
SS
45367
STG*
† 44609
SFG
44741
SS
45368
SS
45113
SS
45382
NBR
48860
FPM
20137
EPDM ◆ 701492
D
48362
SS
45369
D
48362
NBR
48860
FPM
20137
EPDM ◆ 701492
D
48363
NBR
26142
FPM
14330
EPDM ◆ 701493
SS
44612
SS
44108
SS
44109
PVDF
44728
SS
44729
SS
44644
NBR
89827
FPM
11747
EPDM ◆ 701494
D
48364
3831K
DESCRIPTION
QTY
Key (M10x8x70)
Screw, HH Sems (M8x25)
Cover, Bearing
Shim, Split 2-Pc
O-Ring, Bearing Cover - 70D
Seal, Oil, Crankshaft
Bearing, Roller
Rod, Connecting Assy (Inclds: 21,22,23) [10/00]
Washer, Locking (M10)
Washer, Flat (M10)
Screw, HH (M10x55)
Crankshaft, Dual End (M48)
Protector, Oil Cap w/Foam Gasket
Cap, Oil Filler
O-Ring, Oil Filler Cap - 70D
Bolt, Eye (M12x1.75) (For Lifting Pump Only)
Gauge, Oil Bubble w/Gasket
Gasket, Flat, Oil Gauge - 80D
Screw, HH Sems (M8x25)
Plug, Drain (1/4"x19BSP)
O-Ring, Drain Plug - 70D
Cover, Rear
O-Ring, Cover - 70D
Crankcase Assy (Inclds: 34, 54)
Pins, Guide
Pan, Oil
Screw, HH Sems (M6x16)
Pin, Crosshead
Rod, Plunger
Washer, Oil Seal
Seal, Oil, Crankcase
Seal, Oil, Crankcase
Slinger, Barrier
Washer, Keyhole (M16)
Plunger (M32x145) (M40x145)
Stud, Plunger Retainer (M10x135)
Back-up-Ring, Plunger Retainer
O-Ring, Plunger Retainer - 70D
O-Ring, Plunger Retainer
O-Ring, Plunger Retainer
Gasket, Plunger Retainer
Retainer, Plunger (M10)
Retainer, Seal, 2-Pc
Wick , Long Tab
O-Ring, Inlet Adapter - 70D
O-Ring, Inlet Adapter - 70D
O-Ring, Inlet Adapter - 70D
Adapter, Inlet
Seal, LPS w/SS-Spg
Seal, LPS w/SS-Spg
Seal, LPS w/S-Spg
Washer, LPS Seal
Manifold, Inlet, Block-Style
Manifold, Inlet, Block-Style, Flushed
Plug, Inlet (1-1/2" NPT)
O-Ring, Inlet Spacer - 70D
O-Ring, Inlet Spacer - 75D
O-Ring, Inlet Spacer - 70D
Back-up-Ring, Inlet Spacer
Spacer, Inlet
Screw, HSH (M14x100)
Plug (1/4" NPT)
O-Ring, V-Packing Cylinder - 70D
O-Ring, V-Packing Cylinder - 70D
O-Ring, V-Packing Cylinder - 70D
Cylinder, V-Packing
Adapter, Female
V-Packing
V-Packing
Adapter, Male
Springs, Coil
Spacer w/Coil Springs
O-Ring, V-Packing Spacer - 90D
O-Ring, V-Packing Spacer
O-Ring, V-Packing Spacer
Back-up-Ring, V-Packing Spacer
Spacer, V-Packing
Back-up-Ring, V-Packing Spacer
O-Ring, V-Packing Spacer - 90D
O-Ring, V-Packing Spacer
O-Ring, V-Packing Spacer
Back-up-Ring, Seat
O-Ring, Seat - 80D
O-Ring, Seat
O-Ring, Seat
Seat, Stepped
Valve
Spring
Retainer, Spring
Washer, Spring Retainer
Spring, Coil (70kg), Valve Plug
O-Ring, Valve Plug - 90D
O-Ring, Valve Plug - 90D
O-Ring, Valve Plug - 70D
Back-up-Ring, Valve Plug
1
8
2
4
2
2
2
3
3
6
6
1
1
1
1
1
1
1
8
1
1
1
1
1
2
1
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
1
1
1
6
6
6
6
3
4
1
3
3
3
3
3
6
6
3
6/18
3
3
3
3
3
3
3
3
3
3
6
6
6
6
6
6
6
6
6
6
6
6
6
6
MATL
STL
S
AL
FBR
NBR
NBR
STL
TNM
STCP R
STCP R
STZP
FCM
—
ABS
NBR
STCP R
—
NBR
S
STCP
NBR
AL
NBR
AL
S
POP
S
CM
SSZZ
STCP R
NBRS
FPM
S
S
CC
SS
PTFE
NBR
FPM
EPDM
SS
SS
PVDF
—
—
—
—
—
NBR
FPM
EPDM
SS
—
SSL
SS
NBR
FPM
EPDM
PTFE
SS
SS
—
—
—
—
—
SS
STG*
SFG
SS
SS
SS
NBR
FPM
EPDM
D
SS
D
NBR
FPM
EPDM
D
NBR
FPM
EPDM
SS
SS
SS
PVDF
SS
SS
NBR
FPM
EPDM
D
Replace
as a set
EXPLODED VIEW
Models
Standard - 3821, 3831
Flushed - 3821K, 3831K
February 2009
174
176
177
185
188
196
250
255
260
275
278
279
281
282
283
290
299
300
310
—
370
390
391
392
—
3821
MATL
3821K
MATL
3831
701278
701316
87951
701315
701279
701342
44516
34039
92674
990013
80540
30278
30967
10069
34314
6124
901401
—
701699
33269
◆ 701714
34017
31955
◆ 31952
819000
—
714500
714506
701828
6100
SS
SS
S
SSL
S
SS
NY
S
STZP
STL
ZP
STZP
—
NBR
—
—
SSL
—
NBR
FPM
EPDM
NBR
FPM
EPDM
F
—
SS
SS
SS
—
701278
701316
87951
701315
701279
701342
44516
34039
92674
990013
80540
30278
30967
10069
34314
6124
—
901405
701699
33269
◆ 701714
34017
31955
◆ 31952
819000
990663
714500
714506
701828
6100
SS
SS
S
SSL
S
SS
NY
S
STZP
STL
ZP
STZP
—
NBR
—
—
—
SSL
NBR
FPM
EPDM
NBR
FPM
EPDM
F
—
SS
SS
SS
—
701278
701316
87951
701315
701279
701342
44516
34039
92674
990013
80540
30278
30967
10069
34314
6124
901400
—
701698
33268
◆ 701797
34017
31955
◆ 31952
819000
—
714500
714506
701828
6100
MATL
3831K
MATL
SS
701278
SS
701316
S
87951
SSL
701315
S
701279
SS
701342
NY
44516
S
34039
STZP
92674
STL
990013
ZP
80540
STZP
30278
—
30967
NBR
10069
—
34314
—
6124
SSL
—
—
901404
NBR
701698
FPM
33268
EPDM ◆ 701797
NBR
34017
FPM
31955
EPDM
◆ 31952
F
819000
—
990663
SS
714500
SS
714506
SS
701828
—
6100
SS
SS
S
SSL
S
SS
NY
S
STZP
STL
ZP
STZP
—
NBR
—
—
—
SSL
NBR
FPM
EPDM
NBR
FPM
EPDM
F
—
SS
SS
SS
—
Plug, Valve
Cover, Valve
Screw, HSH (M10x30)
Manifold, Discharge, Block-Style
Screw, HSH (M12x100)
Plug, Discharge (1" NPT) Not Shown
6
2
32
1
12
1
Protector, Shaft w/2 Screws, Lockwashers and Washers (Incld w/Pump) 1
Assy, Direct Mount
1
Mount, Rail Assy (Inclds: 34018)
1
Hub, “B”, (35mm Keyway) [See Drive Packages Tech 003]
1
Screw, HH (M12x100) (Rail Adjusting Screw)
1
Oiler (1 oz.) Not Shown
3
Glass, Oiler Not Shown
3
Gasket, Oiler Not Shown
3
Kit, Oil Drain (3/8” X 48”)
1
Gasket, Liquid (3 oz.)
1
Head, Complete, Block-Style
1
Head, Complete, Block-Style, Flushed
1
Kit, Seal (Inclds: 97,104,106,112,113,123,127,155,156,158,159)
1
Kit, Seal (Inclds: 97,104,106,112,113,123,127,155,156,158,159)
1
Kit, Seal (Inclds: 97,104,106,112,113,123,127,155,156,158,159)
1
Kit, Valve, Preassembled (Inclds: 162,163,164,166,167,168,170,172,173) 2
Kit, Valve, Preassembled (Inclds: 162,163,164,166,167,168,170,172,173) 2
Kit, Valve, Preassembled (Inclds: 162,163,164,166,167,168,170,172,173) 2
Assembly, 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
Oil, Case (12-21 oz. Bottles) ISO-68 Hydraulic
1
(Fill to specified crankcase capacity prior to start-up)
Bold print part numbers are unique to a particular pump model. Italics are optional items. [ ] Date of latest production change. ◆ Silicone oil/grease required.
† Production parts are different than replacement parts. R Components comply with RoHS Directive. * Review individual parts in each kit for material code identification.
See Tech Bulletins 002, 003, 024, 035, 036, 041, 043, 053, 074, 077, 083, 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 CC=Ceramic CM=Chrome-Moly D=Acetal EPDM=Ethylene Propylene Diene Monamer F=Cast Iron FBR=Fiber
FCM=Forged Chrome-moly FPM=Fluorocarbon NBR=Medium Nitrile (Buna-N) NBRS=Buna, Silicone Free NY=Nylon POP=Polyproplyene PTFE=Pure Polytetrafluoroethylene
PVDF=Polyvinylidene Fluoride S=304SS SFG=Special Blend FPM SS=316SS SSL=316SS/Low Carbon SSZZ=316SS/Zamak STG=Special Blend PTFE White STL=Steel
STZP=Steel/Zinc Plated TNM=Special High Strength ZP=Zinc Plated
Models 3821, 3821K, 3831, 3831K
1
10
2
9
3
12
4
5
6
11
8
7
10
8
1
2
3
4
5
Die cast aluminum crankcase means high
strength, lightweight, and excellent tolerance control.
Oversized crankshaft bearings provide extended bearing life and pump performance.
Chrome-moly crankshaft provides
unmatched strength and surface hardness
for long life.
Matched oversized high strength TNM
connecting rods noted for superior
strength and bearing quality.
Special stainless steel plunger rods with
high strength crossheads for longevity and
corrosion resistance.
6
7
8
9
The stainless steel slinger provides backup protection for the crankcase seal, keeping pumped liquids out of the crankcase.
Special concentric, high-density, polished,
solid ceramic plungers provide a true wear
surface and extended seal life.
Manifolds are 316 SSL block-style for
long-term continuous-duty and corrosion
resistance.
Standard Models: Lo Pressure Seals and
V-Packings are completely lubricated and
cooled by the liquid being pumped.
Lenntech
9 Special Flushed Inlet Manifold permits
external flush for added cooling with high
temperature liquids and lubrication with
low lubricity liquids.
10 Stainless steel valves, seats and springs
provide corrosion-resistance, ultimate
seating and extended life.
11 Specially formulated, CAT PUMP exclusive,
V-Packings offer unmatched performance
and seal life.
12 Crossheads are 360° supported for
uncompromising alignment.
www.lenntech.com
Tel.
.09.00
PN 993127 Rev B 8829
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