CAT PUMPS
CAT PUMPS

High Pressure Plunger Pump · Frame size 5 PFR 351

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

The 1420 min⁻¹ permits multiple drive options, including direct drive with a bell housing and flexible coupling, clutch or belt drive.

Technical specifications

Flow rate 15.3 l/min
Operating pressure 150 bar
Speed 1,450 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.

10 kits bundle wearing parts of this pump ↓

Skip the drawing, go to the parts list

Exploded view

Exploded view 351

Parts list

Item Part no. Description Qty Add to request list
5 92538 Screw, HHC, Sems (M6 x 16) (Model 2530E)S 8
8 43344 Cover, Bearing 2/1/2AL
10 43343 O-Ring, Bearing Cover - 70DNBR 2
11 43222 Seal, Oil, Crankshaft 2/1/2NBR
15 14480 Bearing, Ball 2-2-2STL 2
20 45883 Rod, Connecting AssemblyHS 3
25 43342 Crankshaft, Dual-End (M18) (Models 310, 310B)FCM 1
30 44949 Cover, Blind Shaft (Models 340, 340B)AL 1
32 43211 Cap, Oil FillerABS 1
33 14177 O-Ring, Oil Filler Cap - 70DNBR 1
37 92241 Gauge, Oil, Bubble with Gasket - 80D 1 - 2PC 1
38 44428 Gasket, Flat, Oil Gauge - 80DNBR 1
40 92542 Screw, HHC Sems (M6 x 20)S 4
48 25625 Plug, Drain (1/4" x 19 BSP[M])STCP 1
49 23170 O-Ring, Drain Plug - 70DNBR 1
50 48772 Cover, Rear [07/08]AL 1
51 48773 O-Ring, Rear Cover [07/08]NBR 1
53 48769 CrankcaseAL 1
56 43355 Pan, OilPOP 1
64 43351 Pin, CrossheadCM 3
65 45256 Rod, Plunger, ShortSSZZ 3
70 43228 Seal, Oil, CrankcaseNBR 3
75 43328 Slinger, BarrierS 3
88 45697 Washer, Keyhole (M18 x 10)S 3
90 43367 Plunger (M20x72)CC 3
95 89653 Stud, Plunger Retainer (M6x58)SS 3
96 43235 Backup Ring, Plunger RetainerPTFE 3
97 17399 O-Ring, Plunger Retainer - 80DNBR 3
98 44041 Gasket, Plunger Retainer (M12.5)SS 3
99 44031 Retainer, Plunger (M6)SS 3
100 45688 Retainer, Seal, 2-PiecePVDF 3
101 43302 Wick, Long Tab 3
106 44127 Seal, Low-Pressure with SS-SpringNBR 3
120 45680 Case, SealSS 3
121 14200 O-Ring, Seal Case - 70DNBR 3
125 44649 Seal, High-Pressure, with SS - SupportSNG 3
139 44563 Plug, Inlet [1/2" NPT(M)]NAB 1
139 45156 Plug, Inlet [1/2" NPT(M)]SS 1
162 48361 Backup Ring, SeatD 6
163 43358 O-Ring, SeatNBR 6
164 44128 SeatSS 6
166 44057 ValveSS 6
167 44056 Spring, ValveSS 6
168 44565 Retainer, Spring, DischargePVDF 6
171 44832 Spring, Coil (Not Shown)S 6
172 49382 O-Ring, Valve Plug - 90DNBR 6
174 44833 Plug, ValveNAB 6
174 49296 Plug, ValveSS 6
185 44124 Head ManifoldNAB 1
185 45151 Head ManifoldSS 1
186 15847 Lockwasher (M10)S 2
188 87950 Screw, HSH (M10 x 35)S 2
– 6139 Lubricant, Anti-Seize (8 oz) (Model 1531) 1
– 30057 Key (M6 x 6 x 25) 1
– 30243 Mount, Direct (Belt-Drive Only) 1
– 30659 Kit, Complete Mounting (Inclds: 30611, 30633, 118672) (Belt Drive Only) 1
– 30696 Reverse Pliers (Not Shown) 1
– 33004 Socket, Seal Case (1/2" Drive) (Not Shown) 1
– 34334 Kit, Oil Drain (3/8" x 24") (Not Shown) 1 1
– 43838 Crankshaft, Dual-End (M12) (Models 350, 350B)FCM 1
– 44945 Crankshaft, Single-End (M10) (Models 340, 340B)FCM 1
– 49583 Head Manifold, Flushed (301C)SS 1
– 118672 Protector, Shaft (Model 5CP5120) 1
– 126610 Mounting, Angle Rail (STZP R) 1
– 812207 Head, Complete with NBR Seals and O-Rings (Models 311, 341, 351) 1
– 814559 Head, Complete with NBR Seals and O-Rings (Models 317, 347, 357) 1
– 818444 Head, Complete with NBR Seals and O-Rings (Models 311C, 341C, 351C) 1
– 828710 Protector, Oil Cap with Foam Gasket 1 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

    34153

    NBR (STD)Medium Nitrile (Buna-N)

    contains 7 items · one kit per pump

    Parts list
    • 97 17399 O-Ring, Plungerhalter 3×
    • 101 43302 Ölfilz 3×
    • 106 43305 Seal, Low-Pressure with S-Spring (Model 30) 3×
    • 112 14200 O-Ring, Seal Case 3×
    • 121 14200 O-Ring, Dichtungsgehäuse 3×
    • 125 44649 Dichtung, Hochdruck m/SS-Stütze 3×
    • 125 43307 Seal, High-Pressure with S-Support (Model 30) 3×
  • Seal kit

    34155

    FPM (0.0110)Fluorocarbon

    contains 6 items · one kit per pump

    Parts list
    • 97 14160 O-Ring, Plungerhalter 3×
    • 101 43302 Ölfilz 3×
    • 106 45153 Seal, Low-Pressure with S-Spring (Model 30) 3×
    • 112 11719 O-Ring, Seal Case 3×
    • 121 11719 O-Ring, Dichtungsgehäuse 3×
    • 125 44936 Dichtung, Hochdruck m/SS-Stütze 3×
  • Seal kit

    31163

    EPDM (0.0220)Ethylene Propylene Diene Monomer

    contains 5 items · one kit per pump

    Parts list
    • 97 46204 O-Ring, Plungerhalter 3×
    • 101 43302 Ölfilz 3×
    • 106 48429 Seal, Low-Pressure with S-Spring (Model 30) 3×
    • 112 48907 O-Ring, Seal Case 3×
    • 121 48907 O-Ring, Dichtungsgehäuse 3×
  • Seal kit

    76623

    FFKM (0.0770)Perfluoroelastomer

    contains 3 items · one kit per pump

    Parts list
    • 97 701715 O-Ring, Plungerhalter 3×
    • 101 43302 Ölfilz 3×
    • 121 701716 O-Ring, Dichtungsgehäuse 3×
  • Seal kit

    33623

    HT (0.3000)Hi-Temp (EPDM Alternative)

    contains 5 items · one kit per pump

    Parts list
    • 97 17399 O-Ring, Plungerhalter 3×
    • 101 43302 Ölfilz 3×
    • 106 43305 Dichtung, Niederdruck m/S-Feder 3×
    • 112 14200 O-Ring, Seal Case 3×
    • 121 14200 O-Ring, Dichtungsgehäuse 3×
  • Seal kit

    77031

    STHT (0.3400)Special PTFE High Temp

    contains 4 items · one kit per pump

    Parts list
    • 97 17399 O-Ring, Plungerhalter 3×
    • 101 43302 Ölfilz 3×
    • 106 76305 Dichtung, Niederdruck m/S-Feder 3×
    • 121 14200 O-Ring, Dichtungsgehäuse 3×

Valve kits

  • Valve kit

    31152

    NBR (STD)Medium Nitrile (Buna-N)

    contains 11 items · 2 kits per pump

    Parts list
    • 162 48361 Stützring, Ventilsitz 3×
    • 163 43358 O-Ring, Ventilsitz 3×
    • 164 44128 Ventilsitz 3×
    • 164 43725 Seat (Model 30) 3×
    • 166 44057 Ventil 3×
    • 166 43723 Valve (Model 30) 3×
    • 167 44056 Feder, Ventil 3×
    • 167 43750 Spring (Model 30) 3×
    • 168 44565 Federhalter, Ventil 3×
    • 171 44832 Feder, Ventilstopfen 3×
    • 172 49382 O-Ring, Ventilstopfen 3×
  • Valve kit

    34152

    FPM (0.0110)Fluorocarbon

    contains 8 items · 2 kits per pump

    Parts list
    • 162 48361 Stützring, Ventilsitz 3×
    • 163 44938 O-Ring, Ventilsitz 3×
    • 164 44128 Ventilsitz 3×
    • 166 44057 Ventil 3×
    • 167 44056 Feder, Ventil 3×
    • 168 44565 Federhalter, Ventil 3×
    • 171 44832 Feder, Ventilstopfen 3×
    • 172 15855 O-Ring, Ventilstopfen 3×
  • Valve kit

    76148

    EPDM (0.0220)Ethylene Propylene Diene Monomer

    contains 8 items · 2 kits per pump

    Parts list
    • 162 48361 Stützring, Ventilsitz 3×
    • 163 48908 O-Ring, Ventilsitz 3×
    • 164 44128 Ventilsitz 3×
    • 166 44057 Ventil 3×
    • 167 44056 Feder, Ventil 3×
    • 168 44565 Federhalter, Ventil 3×
    • 171 44832 Feder, Ventilstopfen 3×
    • 172 48431 O-Ring, Ventilstopfen 3×
  • Valve kit

    76821

    FFKM (0.0770)Perfluoroelastomer

    contains 8 items · 2 kits per pump

    Parts list
    • 162 48361 Stützring, Ventilsitz 3×
    • 163 701717 O-Ring, Ventilsitz 3×
    • 164 44128 Ventilsitz 3×
    • 166 44057 Ventil 3×
    • 167 44056 Feder, Ventil 3×
    • 168 44565 Federhalter, Ventil 3×
    • 171 44832 Feder, Ventilstopfen 3×
    • 172 701718 O-Ring, Ventilstopfen 3×

More models in frame size 5 PFR

High Pressure Plunger Pump 30

30

Flow rate
12.1 l/min
Operating pressure
152 bar
Speed
1,725 min⁻¹
Material
Brass
High Pressure Plunger Pump 45

45

Flow rate
15.3 l/min
Operating pressure
245 bar
Speed
1,450 min⁻¹
Material
Brass
High Pressure Plunger Pump 300

300

Flow rate
10.2 l/min
Operating pressure
150 bar
Speed
1,450 min⁻¹
Material
Brass
High Pressure Plunger Pump 301

301

Flow rate
10.2 l/min
Operating pressure
150 bar
Speed
1,450 min⁻¹
Material
Stainless Steel

View all plunger pumps →

High Pressure Plunger Pump 351
351 · High Pressure Plunger Pump
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