High Pressure Plunger Pump · Frame size 5CP 5CPQ6251

Name: 5CPQ6251
Brand: CAT PUMPS
SKU: 5CPQ6251

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.

Cat Pumps “Q” pump models reduce sound levels by -6 dBa (decibels). With “Q” model pumps and other noise reduction measures, equipment builders can supply quiet, pleasing equipment to their customers.

The 1725 min⁻¹ permits multiple drive options, including direct drive with a bell housing and flexible coupling or belt drive.

Request this pump Data sheet (PDF) Spare parts

Technical specifications

Flow rate	19 l/min
Operating pressure	138 bar
Speed	1,725 min⁻¹
Inlet port	1/2" NPT
Discharge port	3/8" NPT
Shaft diameter	20 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.

9 kits bundle wearing parts of this pump ↓

Skip the drawing, go to the parts list

Parts list

Item	Part no.	Description	Qty
5	119049	Screw, HHC, Sems (M8 x 16)SS	8
8	46910	Cover, Bearing 2/1/2AL	2
10	14028	O-Ring, Bearing Cover - 70D 2-2-1NBR	2
11	43222	Seal, Oil, Crankshaft 2/1/2NBR	2
15	127472	Bearing, BallSTL	2
20	48742	Rod, Connecting Assembly [10/01]TNM	3
25	46928	Crankshaft, Dual End, M18 - 5CP3120FCM	1
30	48224	Cover, Bearing, Blind - 5CP6120CSAL	1
32	46798	Cap, Oil Filler, Domed	1
33	14179	O-Ring, Oil Filler Cap - 70DNBR	1
37	92241	Gauge, Oil, Bubble with Gasket - 80D 1 - 2PC
38	44428	Gasket, Flat, Oil Gauge - 80DNBR
40	92538	Screw, HHC, Sems (M6 x 16) (Model 2530E)S	4
48	25625	Plug, Drain (1/4" x 19 BSP[M])STCP	1
49	23170	O-Ring, Drain Plug - 70DNBR	1
50	46940	Cover, RearAL	1
51	14044	O-Ring, Rear CoverNBR	1
53	48617	CrankcaseAL	1
64	46746	Pin, CrossheadCM	3
65	48458	Rod, PlungerBBNP	3
70	46838	Seal, Oil, Crankcase - 70DNBR	3
71	48208	Washer, Oil SealPVDF	3
75	43328	Slinger, BarrierS	3
88	45697	Washer, Keyhole (M18 x 10)S	3
90	46841	Plunger (M20x50)CC	3
98	46730	Washer, Seal - 90DNBR	3
100	46749	Retainer, SealPVDF	3
106	44127	Seal, Low-Pressure with SS-SpringNBR	3
110	48552	Manifold, InletSS	1
117	119034	Screw, HSH (M8x35)S	4
125	833824	Seal, High-PressureSNG	3
143	49382	O-Ring, Valve Plug - 90DNBR	3
150	48212	Adapter, InletSS	3
154	43781	O-Ring, Inlet Valve Adapter, FrontNBR	3
155	43781	O-Ring, Inlet Valve Adapter, FrontNBR	3
157	48211	Adapter, DischargeSS	3
159	43781	O-Ring, Inlet Valve Adapter, FrontNBR	3
163	43781	O-Ring, Inlet Valve Adapter, FrontNBR	3
164	48216	SeatSS	6
165	43793	O-Ring, SeatNBR	6
166	44038	ValveSS	6
167	44039	Spring, ValveSS	6
168	44564	Retainer, SpringPVDF	6
185	48554	Manifold, DischargeSS	1
186	19085	Lockwasher, Split (Model 2530E)S	6
188	120774	Screw, HSH (M12 x 40)S	2
189	89575	Screw, HSH (M12 x 60)S	4
–	6124	Gasket, Liquid (3 oz. / 0,1 l)	1
–	6139	Lubricant, Anti-Seize (8 oz) (Model 1531)	1
–	30057	Key (M6 x 6 x 25)	1
–	30696	Reverse Pliers (Not Shown)	1
–	34334	Kit, Oil Drain (3/8" x 24") (Not Shown) 1	1
–	43222	Seal, Oil, Crankshaft 2/1/2NBR	1
–	46910	Cover, Bearing 2/1/2AL	1
–	46982	Crankshaft, Dual-EndFCM	1
–	48203	-- Crankshaft, Single End, M10 - 5CP3105CSSFCM	1
–	48368	Crankshaft, Single End M16.5 - 5CP6180CSS, 5CP6180CSSG1FCM	1
–	49776	Cover, Bearing - 5CP3120CSS, 5CP3120CSSG1 [After 12/10]AL	1
–	49872	-- Crankshaft, Single End, M14 - 5CP3110CSSFCM	1
–	118672	Protector, Shaft (Model 5CP5120)	1
–	126610	Mounting, Angle Rail (STZP R)	1
–	127409	Cap, Vented with O-Ring (Rain Cap)	1
–	6132	Oil, Crankcase, Bottle 1l	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

76283

NBR (STD)Medium Nitrile (Buna-N)

contains 7 items · one kit per pump
Parts list
- 98 46730 Scheibe, Plungerhalter 3×
- 106 44127 Dichtung, Niederdruck 3×
- 125 833824 Dichtung, Hochdruck 3×
- 143 49382 O-Ring, Adapter, Einlass, hinten 3×
- 154 43781 O-Ring, Adapter, Einlass, vorne 3×
- 155 43781 O-Ring, Adapter, Auslass, hinten 3×
- 159 43781 O-Ring, Adapter, Auslass, vorne 3×
Seal kit

34351

FPM (0.0110)Fluorocarbon

contains 7 items · one kit per pump
Parts list
- 98 48394 Scheibe, Plungerhalter 3×
- 106 45153 Dichtung, Niederdruck 3×
- 125 44936 Dichtung, Hochdruck 3×
- 143 15855 O-Ring, Adapter, Einlass, hinten 3×
- 154 11337 O-Ring, Adapter, Einlass, vorne 3×
- 155 11337 O-Ring, Adapter, Auslass, hinten 3×
- 159 11337 O-Ring, Adapter, Auslass, vorne 3×
Seal kit

34352

EPDM (0.0220)Ethylene Propylene Diene Monomer

contains 7 items · one kit per pump
Parts list
- 98 48432 Scheibe, Plungerhalter 3×
- 106 48429 Dichtung, Niederdruck 3×
- 125 46667 Dichtung, Hochdruck 3×
- 143 48431 O-Ring, Adapter, Einlass, hinten 3×
- 154 48430 O-Ring, Adapter, Einlass, vorne 3×
- 155 48430 O-Ring, Adapter, Auslass, hinten 3×
- 159 48430 O-Ring, Adapter, Auslass, vorne 3×
Seal kit

76947

FFKM (0.0770)Perfluoroelastomer

contains 7 items · one kit per pump
Parts list
- 98 46730 Scheibe, Plungerhalter 3×
- 106 76149 Dichtung, Niederdruck 3×
- 125 76395 Dichtung, Hochdruck 3×
- 143 701718 O-Ring, Adapter, Einlass, hinten 3×
- 154 77359 O-Ring, Adapter, Einlass, vorne 3×
- 155 77359 O-Ring, Adapter, Auslass, hinten 3×
- 159 77359 O-Ring, Adapter, Auslass, vorne 3×
Seal kit

76677

HT (0.3000)Hi-Temp (EPDM Alternative)

contains 7 items · one kit per pump
Parts list
- 98 46730 Scheibe, Plungerhalter 3×
- 106 44127 Dichtung, Niederdruck 3×
- 125 46667 Dichtung, Hochdruck 3×
- 143 49382 O-Ring, Adapter, Einlass, hinten 3×
- 154 43781 O-Ring, Adapter, Einlass, vorne 3×
- 155 43781 O-Ring, Adapter, Auslass, hinten 3×
- 159 43781 O-Ring, Adapter, Auslass, vorne 3×

Valve kits

Valve kit

33972

NBR (STD)Medium Nitrile (Buna-N)

contains 8 items · one kit per pump
Parts list
- 143 49382 O-Ring, Adapter, Einlass, hinten 3×
- 154 43781 O-Ring, Adapter, Einlass, vorne 3×
- 163 43781 O-Ring, Ventilsitz 3×
- 164 48216 Ventilsitz 6×
- 165 43793 O-Ring, Ventilsitz 6×
- 166 44038 Ventil 6×
- 167 44039 Feder, Ventil 6×
- 168 44564 Federhalter, Ventil 6×
Valve kit

34362

FPM (0.0110)Fluorocarbon

contains 8 items · one kit per pump
Parts list
- 143 15855 O-Ring, Adapter, Einlass, hinten 3×
- 154 11337 O-Ring, Adapter, Einlass, vorne 3×
- 163 11337 O-Ring, Ventilsitz 3×
- 164 48216 Ventilsitz 6×
- 165 43791 O-Ring, Ventilsitz 6×
- 166 44038 Ventil 6×
- 167 44039 Feder, Ventil 6×
- 168 44564 Federhalter, Ventil 6×
Valve kit

34363

EPDM (0.0220)Ethylene Propylene Diene Monomer

contains 8 items · one kit per pump
Parts list
- 143 48431 O-Ring, Adapter, Einlass, hinten 3×
- 154 48430 O-Ring, Adapter, Einlass, vorne 3×
- 163 48430 O-Ring, Ventilsitz 3×
- 164 48216 Ventilsitz 6×
- 165 48490 O-Ring, Ventilsitz 6×
- 166 44038 Ventil 6×
- 167 44039 Feder, Ventil 6×
- 168 44564 Federhalter, Ventil 6×
Valve kit

77332

IPFE (0.0770)I-Perfluoroelastomer

contains 8 items · one kit per pump
Parts list
- 143 701718 O-Ring, Adapter, Einlass, hinten 3×
- 154 77359 O-Ring, Adapter, Einlass, vorne 3×
- 163 77359 O-Ring, Ventilsitz 3×
- 164 48216 Ventilsitz 6×
- 165 77338 O-Ring, Ventilsitz 6×
- 166 44038 Ventil 6×
- 167 44039 Feder, Ventil 6×
- 168 44564 Federhalter, Ventil 6×