High Pressure Plunger Pump · Frame size 35 PFR 3501

Name: 3501
Brand: CAT PUMPS
SKU: 3501

This triplex (three plunger rods) positive displacement, reciprocating plunger pump is constructed with 316 stainless steel manifolds, 316 stainless steel valve assemblies, solid ceramic plungers and standard NBR (Buna-N) seals and O-rings.

Request this pump Data sheet (PDF) Spare parts

Technical specifications

Flow rate	37.9 l/min
Operating pressure	345 bar
Speed	915 min⁻¹
Inlet port	1 1/2" NPT(F)
Discharge port	3/4" NPT(F)
Shaft diameter	35 mm
Material	Stainless Steel

Downloads

CAD files

Spare parts

Click an item in the drawing or in the parts list to add it to your request list. We turn it into a quotation – no order is placed.

8 kits bundle wearing parts of this pump ↓

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Parts list

Item	Part no.	Description	Qty
5	96049	Screw, HHC Sems (M10x25)S	8
8	134604	Cover, Bearing [06/18]ALE	2
9	815279	Shim, Split, 2-Piece 0 - 2FBR
10	12398	O-Ring, Bearing Cover - 70DNBR	2
11	13296	Seal, Oil, Crankshaft 0 - 2NBR	2
12	855049	Shim, Split, 2-Piece 0 - 2S
15	29326	Bearing, RollerSTL	2
20	126725	Rod, Connecting Assembly (Includes: 21, 22, 23) (Model 3521DHS)BZ	3
21	126749	Washer, Locking (M10)STCP	3
22	126593	Washer, Flat (M10.5)STCP	6
23	122045	Screw, HH (M10x55)STZP	6
25	29325	Crankshaft, Dual End (M48)FCM	1
31	828710	Protector, Oil Cap with Foam Gasket 1PE	1
32	43211	Cap, Oil FillerABS	1
33	14177	O-Ring, Oil Filler Cap - 70DNBR	1
34	126743	Bolt, Eye (M12x1.75) (For Lifting Pump Only)STCP	1
37	92241	Gauge, Oil, Bubble with Gasket - 80D 1 - 2PC	1
38	44428	Gasket, Flat, Oil Gauge - 80DNBR	1
40	125753	Screw, HHC, Sems (M8 x 25) (Model 2530E)S	8
48	25625	Plug, Drain (1/4" x 19 BSP[M])STCP	1
49	23170	O-Ring, Drain Plug - 70DNBR	1
50	45936	Cover, Rear (See Tech Bulltin 118)ALE	1
51	16612	O-Ring, Cover - 70DNBR	1
53	134784	Crankcase Assembly (Includes 54)ALE	1
54	27488	Pin, GuideS	2
56	27790	Pan, OilPOP	1
59	92538	Screw, HHC, Sems (M6 x 16) (Model 2530E)S	2
64	43864	Pin, CrossheadCM	3
65	45118	Rod, PlungerSSZZ	3
65	49166	Rod, Plunger (Model 3521DHS)SSHB	3
69	126587	Washer, Oil SealSTCP	3
70	100488	Seal, Oil, CrankcaseNBRS	3
75	43506	Slinger, BarrierS	3
75	43865	Slinger, BarrierS	3
87	49667	CollarSS	3
87	109608	CollarSS	3
88	45675	Washer, KeyholeS	3
88	45676	Washer, Keyhole (M16)S	3
90	43866	Plunger (M25 x 145)CC	3
90	43945	Plunger (M20x145) Model 3501,3501C, Plunger (M25x145) Model 3511, 3511CCC	3
95	89778	Stud, Plunger Retainer (M10x135)SS	3
95	89779	Stud, Retainer (M7x123) Model 3501, 3501C, Stud, Retainer (M10x135) Model 3511, 3511CS	3
96	20184	Backup Ring, Plunger RetainerPTFE	3
96	20189	Back-up-Ring, Plunger RetainerPTFE	3
97	11345	O-Ring, Plunger Retainer - 70DNBR	3
97	14190	O-Ring, Plunger Retainer - 70DNBR	3
98	44069	Gasket, Plunger Retainer (M7) Model 3501, 3501C, Gasket, Plunger Retainer (M10) Model 3511, 3511CSS	3
98	44085	Gasket, Plunger Retainer (M7) Model 3501, 3501C, Gasket, Plunger Retainer (M10) Model 3511, 3511CSS	3
99	44068	Retainer, Plunger (M7) [7/02]SS	3
99	44084	Retainer, Plunger (M10)SS	3
100	814279	Retainer, Seal, 2-PiecePVDF	3
101	44095	Wick, Long Tab	3
101	44096	Wick, Long Tab	3
104	43875	O-Ring, Inlet Adapter - 70DNBR	3
105	113022	Adapter, Low-Pressure SealSS	3
105	701344	Adapter, InletSS	3
106	44071	Seal, Low-Pressure with SS - SpringNBR	3
106	44086	Seal, Low-Pressure with SS-SpringNBR	3
107	44074	Washer, Low-Pressure SealSS	3
107	44089	Washer, Low-Pressure SealSS	3
110	45365	Manifold, Inlet (Model 3521DHS)SS	1
112	11379	O-Ring, Inlet Manifold - 70DNBR	3
117	44585	Screw, HSH (M14x40)S	4
123	12391	O-Ring, V-Packing Cylinder - 70DNBR	3
124	49666	Cylinder, V-PackingSS	3
124	113023	Cylinder, V-PackingSS	3
126	44164	Adapter, FemaleSS	3
126	113024	Adapter, FemaleSS	3
127	44607	V-Packing Model 3501, 3501C, V-Packing Model 3511, 3511C 9/6STG
127	44610	V-Packing Model 3501, 3501C, V-Packing Model 3511, 3511C 9/6STG
128	44165	Adapter, MaleSS	3
128	113025	Adapter, MaleSS	3
155	11379	O-Ring, Inlet Manifold - 70DNBR
155	132961	O-Ring, V-Packing Spacer 3/6NBR
156	28243	Back-up-Ring, V-Packing Spacer 3/6PTFE
156	28675	Back-up-Ring, V-Packing Spacer 3/6PTFE
157	49668	Spacer, V-PackingSS	3
157	113026	Spacer, V-PackingSS	3
159	12390	O-Ring, V-Packing Spacer (Model 3501) 3/0NBR
162	21985	Backup Ring, SeatPTFE	6
163	26089	O-Ring, Seat - 80DNBR	6
164	49671	SeatSS	6
166	44081	ValveSS	6
167	44082	SpringSS	6
168	44735	Retainer, SpringPVDF	6
170	44794	Washer, Spring RetainerSS	6
171	44793	Spring, Coil, Valve PlugSS	6
172	15853	O-Ring, Valve Plug - 70DNBR	6
173	20224	Back-up-Ring, Valve PlugPTFE	6
174	45603	Plug, ValveSS	6
175	87951	Screw, HSH (M10x30)S	36
185	49669	Manifold, DischargeSSD	1
185	49672	Manifold, DischargeSSD	1
188	89981	Screw, HSH (M12 x 70)S	8
250	855042	Protector, Shaft with Two (2) Screws, Lockwashers and WashersPOP	1
–	0696	Reverse Pliers (Not Shown)	1
–	1038	Kit, Seal - Standard NBR (Models 3511DHS, 3511CHS)	1
–	2273	Crankcase Oil Seal Removal and Installation Kit (Not Shown)	1
–	6037	Kit, Seal - Standard NBR (Model 3501)	1
–	6251	Kit, Valve - Standard - NBR	2
–	18438	Head, Complete with NBR Seals and O-Rings (Models 3511DHS)	1
–	18459	Head, Complete with NBR Seals and O-Rings (Model 3501)	1
–	30278	Oiler (1 oz) (Not Shown) 3	3
–	34018	Mount, Direct (STZP R)	1
–	34021	Key (M10 x 8 x 70) 1	7
–	34039	Mount, Direct (S) 1	7
–	34314	Kit, Oil Drain (3/8" x 48") (Not Shown)	1
–	76514	Mount, Rail Assembly (S) (Includes: 34039) 1	3
–	80540	Screw, Adjusting (M12 x 100) 2	6
–	92674	Mount, Rail Assembly (STZP R) (Includes: 34018)	1
–	125397	Manifold, Inlet, Flushed (1/4" Flush Ports) (Model 3521C)SS	1
–	819000	Assembly, Crankcase, Cast Iron Conversion (Not Shown) 1	3
–	990013	Hub, "B", 35 mm (STL) 1	6
–	6133	Oil, Crankcase, Can 4l	1

in the request list covered by a requested kit

Seal and valve kits

A kit bundles the wearing parts of one assembly. Selecting it highlights the items it covers in the drawing and the parts list – once requested, they stay marked.

Seal kits

Seal kit

76037

NBR (STD)Medium Nitrile (Buna-N)

contains 10 items · one kit per pump
Parts list
- 97 14190 O-Ring, Plungerhalter (3501,3501C) 3×
- 104 43875 O-Ring, Adapter 3×
- 106 44071 Dichtung, Niederdruck (3501,3501C) 3×
- 112 11379 O-Ring, Saugstutzen 3×
- 123 12391 O-Ring, V-Packung, Zylinder 3×
- 127 44607 V-Packung (3501,3501C) 9×
- 155 17622 O-Ring, Distanzstück, V-Packung (3501,3501C) 3×
- 155 132961 O-Ring, V-Packing Spacer (Model 3501) 3×
- 156 28675 Stützring, Distanzstück, V-Packung (3501,3501C) 3×
- 159 12390 O-Ring, Distanzstück, V-Packung (3501,3501C) 3×
Seal kit

76235

FPM (0.0110)Fluorocarbon

contains 9 items · one kit per pump
Parts list
- 97 14161 O-Ring, Plungerhalter (3501,3501C) 3×
- 104 44826 O-Ring, Adapter 3×
- 106 44381 Dichtung, Niederdruck (3501,3501C) 3×
- 112 14183 O-Ring, Saugstutzen 3×
- 123 13266 O-Ring, V-Packung, Zylinder 3×
- 127 44607 V-Packung (3501,3501C) 9×
- 155 11719 O-Ring, Distanzstück, V-Packung (3501,3501C) 3×
- 156 28675 Stützring, Distanzstück, V-Packung (3501,3501C) 3×
- 159 13264 O-Ring, Distanzstück, V-Packung (3501,3501C) 3×
Seal kit

76085

EPDM (0.0220)Ethylene Propylene Diene Monomer

contains 9 items · one kit per pump
Parts list
- 97 48239 O-Ring, Plungerhalter (3501,3501C) 3×
- 104 701656 O-Ring, Adapter 3×
- 106 76071 Dichtung, Niederdruck (3501,3501C) 3×
- 112 701491 O-Ring, Saugstutzen 3×
- 123 701657 O-Ring, V-Packung, Zylinder 3×
- 127 44607 V-Packung (3501,3501C) 9×
- 155 701654 O-Ring, Distanzstück, V-Packung (3501,3501C) 3×
- 156 28675 Stützring, Distanzstück, V-Packung (3501,3501C) 3×
- 159 701749 O-Ring, Distanzstück, V-Packung (3501,3501C) 3×
Seal kit

993597

FFKM (0.0770)Perfluoroelastomer

contains 9 items · one kit per pump
Parts list
- 97 703586 O-Ring, Plunger Retainer (Model 3501) 3×
- 104 702977 O-Ring, Adapter 3×
- 106 703179 Seal, Low-Pressure with SS-Spring (Model 3501) 3×
- 112 702705 O-Ring, Inlet Manifold 3×
- 123 703481 O-Ring, V-Packing Cylinder 3×
- 127 76607 V-Packing (Model 3501) 9×
- 155 701716 O-Ring, V-Packing Spacer (Model 3501) 3×
- 156 28675 Back-up-Ring, V-Packing Spacer 3/6 3×
- 159 703486 O-Ring, V-Packing Spacer (Model 3501) 3×

Valve kits

Valve kit

76251

NBR (STD)Medium Nitrile (Buna-N)

contains 9 items · 2 kits per pump
Parts list
- 162 21985 Stützring, Ventilsitz 3×
- 163 26089 O-Ring, Ventilsitz 3×
- 164 49671 Ventilsitz 3×
- 166 44081 Ventil 3×
- 167 44082 Feder, Ventil 3×
- 168 44735 Federhalter, Ventil 3×
- 170 44794 Scheibe, Federhalter 3×
- 172 15853 O-Ring, Ventilstopfen 3×
- 173 20224 Stützring, Ventilstopfen 3×
Valve kit

76798

FPM (0.0110)Fluorocarbon

contains 9 items · 2 kits per pump
Parts list
- 162 21985 Stützring, Ventilsitz 3×
- 163 11377 O-Ring, Ventilsitz 3×
- 164 49671 Ventilsitz 3×
- 166 44081 Ventil 3×
- 167 44082 Feder, Ventil 3×
- 168 44735 Federhalter, Ventil 3×
- 170 44794 Scheibe, Federhalter 3×
- 172 11720 O-Ring, Ventilstopfen 3×
- 173 20224 Stützring, Ventilstopfen 3×
Valve kit

76351

EPDM (0.0220)Ethylene Propylene Diene Monomer

contains 9 items · 2 kits per pump
Parts list
- 162 21985 Stützring, Ventilsitz 3×
- 163 46647 O-Ring, Ventilsitz 3×
- 164 49671 Ventilsitz 3×
- 166 44081 Ventil 3×
- 167 44082 Feder, Ventil 3×
- 168 44735 Federhalter, Ventil 3×
- 170 44794 Scheibe, Federhalter 3×
- 172 701481 O-Ring, Ventilstopfen 3×
- 173 20224 Stützring, Ventilstopfen 3×
Valve kit

76451

IPFE (0.0770)I-Perfluoroelastomer

contains 9 items · 2 kits per pump
Parts list
- 162 21985 Stützring, Ventilsitz 3×
- 163 703244 O-Ring, Ventilsitz 3×
- 164 49671 Ventilsitz 3×
- 166 44081 Ventil 3×
- 167 44082 Feder, Ventil 3×
- 168 44735 Federhalter, Ventil 3×
- 170 44794 Scheibe, Federhalter 3×
- 172 702974 O-Ring, Ventilstopfen 3×
- 173 20224 Stützring, Ventilstopfen 3×