Lenntech
info@lenntech.com
www.lenntech.com
Tel. +31-15-261.09.00
Fax. +31-15-261.62.89
35 Frame
Plunger Pump
Brass
Standard and Flushed
3535,3535C
Stainless Steel
Standard and Flushed
3531,3531C
Nickel Aluminum Bronze
Standard
3537
Model 3535 Shown
(Shaft protector included, mounting rails sold separately)
FEATURES
SPECIFICATIONS
U.S. Measure
Metric Measure
Flow . ........................................................................ 36 gpm
(136l/m)
Pressure Range .... 100 to 1200 psi
(7 to 85 bar)
Inlet Pressure Range .
l Triplex
l
l
l
design delivers high efficiency and low pulsation.
(Flooded to .9 bar)
(800 rpm)
Durable dual V-Packings are lubricated and cooled by
pumped liquid.
Bore ............................................................................1.575”
Stroke
.........................................................................1.890”
0 mm)
( 8
Crankcase Capacity ................................................. .2 Qts.
( l)
Pre-set Lo-Pressure Seals provide secondary protection
against external leaks and require no packing adjustments.
Maximum Liquid Temperature ...................................160°F
(70°C)
Special high-density, polished, concentric plungers provide a true wear surface and extended seal life.
l Specially
formulated Seals and V-Packings offer
unmatched performance and extended life.
l Interchangeable
inlet and discharge valves for easy ser-
vicing.
l
............................Flooded to 70 psi
RPM. ........................................................................800 rpm
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) (3531C,3535C).
.......................................1/ ” NPTF
1/ ” NPTF
Discharge Ports (2) ..................................................1” NPTF
Pulley Mounting . ...........Either Side
Weight
......................................................................139
lbs.
Shaft Diameter
........................................................... 1.378”
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 Data sheet. CAUTIONS and WARNINGS can also be viewed online at
www.catpumps.com/cautions-warnings or can be requested directly from CAT PUMPS.
(618 x 60 x 2 7 mm)
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.
(63mm)
kg)
(35
Dimensions (3535, 3535C) . ................23.87 x 18.11 x 9.72” (606.5 x 60 x 2 7 mm)
Dimensions (3531,3531C, 3537) . .......2 .33 x 18.11 x 9.72”
Wet-end easily serviced without entering crankcase.
(1” NPTF)
(Either Side)
PRESSURE
rpm
psi
psi
psi
800
1000
1200
U.S.
gpm
l/m
bar
55
bar
70
bar
85
36
30
25
136
11
95
19.8
16.5
13.7
2 .7
20.6
17.2
29.7
2 .7
20.6
800
667
556
DRIVE
Consult
CAT PUMPS
for
Pump and
Motor Pulley
Sizes
DETERMINING
THE PUMP rpm
Rated gpm
Rated rpm
=
“Desired” gpm
“Desired” rpm
DETERMINING
THE REQUIRED H.P.
gpm x psi
1 60
=
Electric Brake
H. P. Required
Motor Pulley O.D.
Pump rpm
=
Pump Pulley O.D.
Motor rpm
DETERMINING
MOTOR PULLEY SIZE
See complete Drive Packages [Inclds: Pulleys, Belts, Hubs, Key] Tech Bulletin 003.
Refer to pump Service Manual for repair procedure and additional technical information.
“Customer confidence is our greatest asset”
PARTS LIST
ITEM
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
106
107
110
112
117
126
127
128
141
155
156
157
158
159
162
163
164
166
167
168
170
171
172
173
174
185
188
250
PART NUMBER
3535
3531
3535C MATL 3531C MATL 3537 MATL
DESCRIPTION
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
43921
† 89778
20189
11345
11375
u701490
44085
† 44084
814279
44112
† 44113
44740
u 46955
—
49464
49464C
11379
14183
u 701491
44585
46494
—
44609
44741
43928
49519
48860
20137
u 701492
48362
49478
48362
48860
20137
u 701492
48363
26142
14330
u 701493
44727
43932
44109
44728
44729
44644
89827
11747
u 701494
48364
46444
49465
89981
44516
Key (M10x8x70)
Screw, HHC 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]
Locking Washer (M10)
Washer, Flat (M10)
Screw, HH (M10x55)
Crankshaft, Dual End
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, HHC Sems (M8x25)
Plug, Drain (1/4”x19BSP)
O-Ring, Drain Plug - 70D
Cover, Rear
O-Ring, Crankcase Cover - 70D
Crankcase Assy (Inclds: 34, 54)
Pins, Guide
Pan, Oil
Screw, HHC Sems (M6x16)
Pin, Crosshead
Rod, Plunger
Washer, Oil Seal
Seal, Oil, Crankcase
Seal, Oil, Crankcase
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
O-Ring, Plunger Retainer
Gasket, Retainer
Retainer, Plunger (M10)
Retainer, Seal, 2 Pc. (See Tech Bulletin 105)
Wick, Long Tab
Seal, LPS w/SS-Spg
Seal, LPS w/SS-Spg
Seal, LPS w/S-Spg
Spacer, Lo-Pressure Seal
Manifold, Inlet
Manifold, Inlet, Flushed (1/4” Flush Ports)
O-Ring, Inlet Manifold - 70D
O-Ring, Inlet Manifold
O-Ring, Inlet Manifold - 70D
Screw, HSH (M14x40)
Adapter, Female (See Tech Bulletin 087)
Adapter Female
V-Packing
V-Packing
Adapter, Male
Spring, Large Coil (See Tech Bulletin 108)
O-Ring, V-Packing Spacer - 90D
O-Ring, V-Packing Spacer - 70D
O-Ring, V-Packing Spacer
Back-up-Ring, V-Packing Spacer
Spacer, V-Packing (See Tech Bulletin 108)
Back-up-Ring, V-Packing Spacer
O-Ring, V-Packing Spacer - 90D
O-Ring, V-Packing Spacer - 70D
O-Ring, V-Packing Spacer
Back-up-Ring, Valve Seat
O-Ring, Seat - 80D
O-Ring, Seat
O-Ring, Seat
Seat, Stepped
Valve
Spring
Retainer, Spring
Washer, Spring Retainer
Coil Spring (70kg), Valve Plug
O-Ring, Valve Plug - 90D
O-Ring, Valve Plug - 90D
O-Ring, Valve Plug - 70D
Back-up-Ring, Valve Plug
Plug, Valve
Manifold, Discharge (See Tech Bulletin 099 and 109)
Screw, HSH (M12x70)
Protector, Shaft w/2 Screws, Lockwashers and Washers (Included With Pump)
STL
S
AL
FBR
NBR
NBR
STL
TNM
STCP R
STZP 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
—
BBCP R
BBCP R
NBR
FPM
EPDM
S
BB
—
STG*
SFG
BB
SS
NBR
FPM
EPDM
D
BB
D
NBR
FPM
EPDM
D
NBR
FPM
EPDM
S
S
SS
PVDF
SS
SS
NBR
FPM
EPDM
D
FBB
BBCP R
S
NY
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
43921
89778
20189
11345
11375
u 701490
44085
44084
814279
44112
44113
44740
u 46955
45381
45365
125397
11379
14183
u 701491
44585
48391
45367
44609
44741
45368
49519
48860
20137
u701492
48362
49520
48362
48860
20137
u 701492
48363
26142
14330
u 701493
44612
44108
44109
44728
44729
44644
89827
11747
u 701494
48364
49300
49299
89981
44516
STL
S
AL
FBR
NBR
NBR
STL
TNM
STCP R
STZP 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
SS
SS
NBR
FPM
EPDM
S
D
SS
STG*
SFG
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
SSD
SSD
S
NY
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
43921
89778
20189
11345
11375
u 701490
44085
44084
814279
44112
44113
44740
u 46955
44115
45124
—
11379
14183
u 701491
44585
48391
45367
44609
44741
45368
49519
48860
20137
u 701492
48362
49521
48362
48860
20137
u 701492
48363
26142
14330
u 701493
44612
44108
44109
44728
44729
44644
89827
11747
u 701494
48364
44643
76335
89981
44516
STL
S
AL
FBR
NBR
NBR
STL
TNM
STCP R
STZP 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
NAB
NAB
—
NBR
FPM
EPDM
S
D
SS
STG*
SFG
SS
SS
NBR
FPM
EPDM
D
NAB
D
NBR
FPM
EPDM
D
NBR
FPM
EPDM
SS
SS
SS
PVDF
SS
SS
NBR
FPM
EPDM
D
NAB
NAB
S
NY
QTY
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
1
1
3
3
3
4
3
3
6
6
3
3
3
3
3
3
3
3
3
3
3
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
1
8
1
283
2
278
3531C
Flushing
Models
3531, 3531C
3537
255
3535C Flushing
INLET
260
DISCHARGE
Models
3535, 3535C
DISCHARGE
Models
3531, 3531C
3537
Models
Brass and Flushed - 3535, 3535C
SS and Flushed - 3531, 3531C
NAB and Flushed - 3537
March 2010
3535
3531
3535C MATL 3531C MATL
255
260
275
278
279
281
282
283
290
299
300
310
—
390
391
392
—
—
—
34018
34039
92674
990013
80540
30278
30967
10069
34314
6124
818427
31040
33055
u 33262
34235
31955
u 31952
819000
714500
714506
701828
6575
6100
—
STZP R
S
STZP R
STL
ZP
STZP
—
NBR
—
—
BBCP R
NBR*
FPM
EPDM*
NBR
FPM
EPDM
F
SS
SS
SS
—
—
—
34018
34039
92674
990013
80540
30278
30967
10069
34314
6124
818372
31040
33055
u 33262
34017
31955
u 31952
819000
714500
714506
701828
6575
6100
6119
STZP R
S
STZP R
STL
ZP
STZP
—
NBR
—
—
SS
NBR*
FPM
EPDM*
NBR
FPM
EPDM
F
SS
SS
SS
—
—
—
3537 MATL
34018
34039
92674
990013
80540
30278
30967
10069
34314
6124
814522
31040
33055
u 33262
34017
31955
u 31952
819000
714500
714506
701828
6575
6100
—
STZP R
S
STZP R
STL
ZP
STZP
—
NBR
—
—
NAB
NBR*
FPM
EPDM*
NBR
FPM
EPDM
F
SS
SS
SS
—
—
—
Kit, Direct Mount
Kit, Direct Mount
Mounting, Box Assy (Inclds: 34018)
Hub, ‘B’ 35mm w/Keyway (See Tech Bulletin 003)
Screw, HH (M12x100) (Rail Adjusting Screw)
Oiler (1 oz.)
Glass, Oiler
Gasket, Oiler
Kit, Oil Drain (3/8” x 48”)
Gasket, Liquid (3 oz.)
Complete Head (Models 3535,3531,3537 Only)
Kit, Seal (Inclds: 97,106,112,127,155,156,158,159)
Kit, Seal (Inclds: 97,106,112,127,155,156,158,159)
Kit, Seal (Inclds: 97,106,112,127,155,156,158,159)
Kit, Valve, Preassembled (Inclds: 162,163,164,166,167,168,170,172,173)
Kit, Valve, Preassembled (Inclds: 162,163,164,166,167,168,170,172,173)
Kit, Valve, Preassembled (Inclds: 162,163,164,166,167,168,170,172,173)
Assy, Crankcase, Cast Iron Conversion
C.A.T. (Inlet pressure stabilizer for RO and boosted inlet applications)
Adapter (2 per C.A.T.) (See Data Sheet for complete selection)
Elbow Assy used with Adapter Assy 714506
Plunger Pump Service DVD
Oil, Case (12 Bottles) ISO -68 Hydraulic
(Fill to specified crankcase capacity prior to start-up)
Lubricant, Antiseize (1oz) (See Tech Bulletin 095)
1
1
1
1
1
3
3
3
1
1
1
1
1
1
2
2
2
1
1
2
1
1
1
1
Bold print part numbers are unique to a particular pump model. Italics are optional items. [ ] Date of latest production change. u Silicone oil/grease required.†Production parts differnt from service parts.* Review individual parts in each kit for material identification. R Compoments comply with RoHS Directive
.C. A.T. highly recommended for pressurized inlet, R.O. and Industrial applications.
View Tech Bulletins 03, 024, 035, 036, 040, 041, 043, 050, 052, 053, 069, 074, 077, 083, 095, 099, 105, 108 and 109 for additional information.
MATERIAL CODES (Not Part of Part Number): ABS=ABS Plastic AL=Aluminum BB=Brass BBCP=Brass/Chrome Plated CC=Ceramic CM=Chrome-Moly D=Acetal
EPDM=Ethylene Propylene Diene Monamer F=Cast Iron FBB=Forged Brass FBR=Fiber FCM=Forged Chrome-moly FPM=Fluorocarbon NAB=Nickel Aluminum Bronze
NBR=Medium Nitrile (Buna-N) NBRS=Buna, Silicone Free NY=Nylon POP=Polypropylene PTFE=Pure Polytetrafluoroethylene PVDF=Polyvinylidene Fluoride S=304SS SS=316SS
SSD=Duplex Stainless Steel SSL=316/Low Carbon SSZZ=316SS/Zamak STCP=Steel/Chrome Plated SFG=Special Blend (FPM) STG=Special Blend (PTFE) White
STL=Steel STZP=Steel/Zinc Plated TNM=Special High Strength ZP=Zinc Plated
8.97 (228) 3535
3531C Top
(2) 1/4” NPTF FLUSH
3535C Side
(2) 1" NPTF DISCHARGE
9.06 (230) 3531,3537
23.87 (606.5) 3535
24.33 (618) 3531, 3537
17.64 (448) 3535
19.21 (488) 3531, 3537
13.42 (341)
5.11 (130)
(2) M10 X 1.25
TAPPED HOLES
9.72 (247)
1.378 (35)
.39 (10)
2.20 (56) 3535
2.28 (58)
3531,3537
2.99 (76) 3535
3.23 (82)
3531, 3537
4.92 (125)
(4) M12–1.75
(2) 1-1/2" NPTF INLET
(4) M14
2.24 (56.90)
5.51 (140)
.59 (15)
7.87 (200)
3.15 (80)
8.97 (228)
1.18 (30)
(4) SLOTS USEABLE LENGTH
3.34 (85)
18.11 (460)
8.66 (220)
Models 3535, 3535C, 3531, 3531C, 3537
10
8
1
13
9
12
4
5
6
11
7
3
2
10
8
1
Die cast aluminum crankcase means high
strength, lightweight, and excellent tolerance control.
2
3
4
6
Oversized crankshaft bearings provide extended bearing life and pump performance.
The stainless steel slinger provides backup protection for the crankcase seal,
keeping pumped liquids out of the crankcase.
7
Chrome-moly crankshaft provides unmatched strength and surface hardness
for long life.
Special concentric, high-density, polished,
solid ceramic plungers provide a true wear
surface and extended seal life.
8
Manifolds are a high tensile strength
forged brass, 316 stainless steel, duplex
stainless or nickel aluminum bronze for
long term, continuous duty.
Matched oversized TNM connecting
rods noted for superior tensile strength
and bearing quality.
Special stainless steel plunger rods with
high strength crossheads for longevity
and corrosion resistance.
9
100% wet seal design adds to service life
by allowing pumped liquids to cool and
lubricate on both sides.
Lenntech
“Original Instructions”
www.lenntech.com
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 providing
uncompromising alignment.
13 Special Flushed Inlet Manifold permits
external flush for added cooling with high
temperature liquids and lubrication with
low lubricity liquids.
Tel.
.09.00
PN 993120 Rev G 02/10 7910