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"
Discharge port 3/8"
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

ItemPart no.DescriptionQtyAdd to request list
592538Screw, HHC, Sems (M6 x 16) (Model 2530E)S8
843344Cover, Bearing 2/1/2AL
1043343O-Ring, Bearing Cover - 70DNBR2
1143222Seal, Oil, Crankshaft 2/1/2NBR
1514480Bearing, Ball 2-2-2STL2
2045883Rod, Connecting AssemblyHS3
2543342Crankshaft, Dual-End (M18) (Models 310, 310B)FCM1
3044949Cover, Blind Shaft (Models 340, 340B)AL1
3243211Cap, Oil FillerABS1
3314177O-Ring, Oil Filler Cap - 70DNBR1
3792241Gauge, Oil, Bubble with Gasket - 80D 1 - 2PC1
3844428Gasket, Flat, Oil Gauge - 80DNBR1
4092542Screw, HHC Sems (M6 x 20)S4
4825625Plug, Drain (1/4" x 19 BSP[M])STCP1
4923170O-Ring, Drain Plug - 70DNBR1
5048772Cover, Rear [07/08]AL1
5148773O-Ring, Rear Cover [07/08]NBR1
5348769CrankcaseAL1
5643355Pan, OilPOP1
6443351Pin, CrossheadCM3
6545256Rod, Plunger, ShortSSZZ3
7043228Seal, Oil, CrankcaseNBR3
7543328Slinger, BarrierS3
8845697Washer, Keyhole (M18 x 10)S3
9043367Plunger (M20x72)CC3
9589653Stud, Plunger Retainer (M6x58)SS3
9643235Backup Ring, Plunger RetainerPTFE3
9717399O-Ring, Plunger Retainer - 80DNBR3
9844041Gasket, Plunger Retainer (M12.5)SS3
9944031Retainer, Plunger (M6)SS3
10045688Retainer, Seal, 2-PiecePVDF3
10143302Wick, Long Tab3
10644127Seal, Low-Pressure with SS-SpringNBR3
12045680Case, SealSS3
12114200O-Ring, Seal Case - 70DNBR3
12544649Seal, High-Pressure, with SS - SupportSNG3
13944563Plug, Inlet [1/2" NPT(M)]NAB1
13945156Plug, Inlet [1/2" NPT(M)]SS1
16248361Backup Ring, SeatD6
16343358O-Ring, SeatNBR6
16444128SeatSS6
16644057ValveSS6
16744056Spring, ValveSS6
16844565Retainer, Spring, DischargePVDF6
17144832Spring, Coil (Not Shown)S6
17249382O-Ring, Valve Plug - 90DNBR6
17444833Plug, ValveNAB6
17449296Plug, ValveSS6
18544124Head ManifoldNAB1
18545151Head ManifoldSS1
18615847Lockwasher (M10)S2
18887950Screw, HSH (M10 x 35)S2
–6139Lubricant, Anti-Seize (8 oz) (Model 1531)1
–30057Key (M6 x 6 x 25)1
–30243Mount, Direct (Belt-Drive Only)1
–30659Kit, Complete Mounting (Inclds: 30611, 30633, 118672) (Belt Drive Only)1
–30696Reverse Pliers (Not Shown)1
–33004Socket, Seal Case (1/2" Drive) (Not Shown)1
–34334Kit, Oil Drain (3/8" x 24") (Not Shown) 11
–43838Crankshaft, Dual-End (M12) (Models 350, 350B)FCM1
–44945Crankshaft, Single-End (M10) (Models 340, 340B)FCM1
–49583Head Manifold, Flushed (301C)SS1
–118672Protector, Shaft (Model 5CP5120)1
–126610Mounting, Angle Rail (STZP R)1
–812207Head, Complete with NBR Seals and O-Rings (Models 311, 341, 351)1
–814559Head, Complete with NBR Seals and O-Rings (Models 317, 347, 357)1
–818444Head, Complete with NBR Seals and O-Rings (Models 311C, 341C, 351C)1
–828710Protector, Oil Cap with Foam Gasket 11
–6132Oil, Crankcase, Bottle 1l1

in the request listcovered 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
    • 9717399O-Ring, Plungerhalter3×
    • 10143302Ölfilz3×
    • 10643305Seal, Low-Pressure with S-Spring (Model 30)3×
    • 11214200O-Ring, Seal Case3×
    • 12114200O-Ring, Dichtungsgehäuse3×
    • 12544649Dichtung, Hochdruck m/SS-Stütze3×
    • 12543307Seal, High-Pressure with S-Support (Model 30)3×
  • Seal kit

    34155

    FPM (0.0110)Fluorocarbon

    contains 6 items · one kit per pump

    Parts list
    • 9714160O-Ring, Plungerhalter3×
    • 10143302Ölfilz3×
    • 10645153Seal, Low-Pressure with S-Spring (Model 30)3×
    • 11211719O-Ring, Seal Case3×
    • 12111719O-Ring, Dichtungsgehäuse3×
    • 12544936Dichtung, Hochdruck m/SS-Stütze3×
  • Seal kit

    31163

    EPDM (0.0220)Ethylene Propylene Diene Monomer

    contains 5 items · one kit per pump

    Parts list
    • 9746204O-Ring, Plungerhalter3×
    • 10143302Ölfilz3×
    • 10648429Seal, Low-Pressure with S-Spring (Model 30)3×
    • 11248907O-Ring, Seal Case3×
    • 12148907O-Ring, Dichtungsgehäuse3×
  • Seal kit

    76623

    FFKM (0.0770)Perfluoroelastomer

    contains 3 items · one kit per pump

    Parts list
    • 97701715O-Ring, Plungerhalter3×
    • 10143302Ölfilz3×
    • 121701716O-Ring, Dichtungsgehäuse3×
  • Seal kit

    33623

    HT (0.3000)Hi-Temp (EPDM Alternative)

    contains 5 items · one kit per pump

    Parts list
    • 9717399O-Ring, Plungerhalter3×
    • 10143302Ölfilz3×
    • 10643305Dichtung, Niederdruck m/S-Feder3×
    • 11214200O-Ring, Seal Case3×
    • 12114200O-Ring, Dichtungsgehäuse3×
  • Seal kit

    77031

    STHT (0.3400)Special PTFE High Temp

    contains 4 items · one kit per pump

    Parts list
    • 9717399O-Ring, Plungerhalter3×
    • 10143302Ölfilz3×
    • 10676305Dichtung, Niederdruck m/S-Feder3×
    • 12114200O-Ring, Dichtungsgehäuse3×

Valve kits

  • Valve kit

    31152

    NBR (STD)Medium Nitrile (Buna-N)

    contains 11 items · 2 kits per pump

    Parts list
    • 16248361Stützring, Ventilsitz3×
    • 16343358O-Ring, Ventilsitz3×
    • 16444128Ventilsitz3×
    • 16443725Seat (Model 30)3×
    • 16644057Ventil3×
    • 16643723Valve (Model 30)3×
    • 16744056Feder, Ventil3×
    • 16743750Spring (Model 30)3×
    • 16844565Federhalter, Ventil3×
    • 17144832Feder, Ventilstopfen3×
    • 17249382O-Ring, Ventilstopfen3×
  • Valve kit

    34152

    FPM (0.0110)Fluorocarbon

    contains 8 items · 2 kits per pump

    Parts list
    • 16248361Stützring, Ventilsitz3×
    • 16344938O-Ring, Ventilsitz3×
    • 16444128Ventilsitz3×
    • 16644057Ventil3×
    • 16744056Feder, Ventil3×
    • 16844565Federhalter, Ventil3×
    • 17144832Feder, Ventilstopfen3×
    • 17215855O-Ring, Ventilstopfen3×
  • Valve kit

    76148

    EPDM (0.0220)Ethylene Propylene Diene Monomer

    contains 8 items · 2 kits per pump

    Parts list
    • 16248361Stützring, Ventilsitz3×
    • 16348908O-Ring, Ventilsitz3×
    • 16444128Ventilsitz3×
    • 16644057Ventil3×
    • 16744056Feder, Ventil3×
    • 16844565Federhalter, Ventil3×
    • 17144832Feder, Ventilstopfen3×
    • 17248431O-Ring, Ventilstopfen3×
  • Valve kit

    76821

    FFKM (0.0770)Perfluoroelastomer

    contains 8 items · 2 kits per pump

    Parts list
    • 16248361Stützring, Ventilsitz3×
    • 163701717O-Ring, Ventilsitz3×
    • 16444128Ventilsitz3×
    • 16644057Ventil3×
    • 16744056Feder, Ventil3×
    • 16844565Federhalter, Ventil3×
    • 17144832Feder, Ventilstopfen3×
    • 172701718O-Ring, Ventilstopfen3×

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

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High Pressure Plunger Pump 351
351 · High Pressure Plunger Pump