High-Pressure Water Injection Pump
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JN315 Series

High-Pressure Water Injection Pump

Reciprocating plunger pumps for industrial cleaning, ship hull descaling and water injection

  • Max. pressure: Standard 65 MPa; ultra-high-pressure version up to 120 MPa
  • Max. flow: 1230 L/min
  • Dimensions: 2170×1826×1012 mm

JN315 ultra-high-pressure water injection pump is a new-generation product developed based on over thirty years of experience in manufacturing high-pressure plunger pumps. It fully incorporates extensive user feedback and advanced international design concepts, combined with Juneng’s expertise in industrial processing, to deliver a carefully engineered solution for demanding applications.

The pump adopts a low-speed, long-stroke design philosophy and features comprehensive optimization of valve assemblies and plunger sealing structures. Both the power end and the hydraulic end have been innovatively upgraded, significantly enhancing the pump’s ability to convey abrasive media. These improvements greatly extend seal service life, reduce maintenance frequency, and lower labor intensity, supporting sustained improvements in operational efficiency.

Application Scenarios

The ultra-high-pressure water injection pump is suitable for:

  • Jet cleaning
  • Metal cutting
  • Ship cleaning
  • Rust removal
  • Cleaning of condensers, heat exchangers, and reactors in chemical plants, sugar plants, and power plants
Specifications
High-Pressure Water Injection Pump
High-Pressure Water Injection Pump

6-Pole Motor Version — 1400/335

Pump Speed (min-1) 81 Plunger Stroke (mm) 150
Theoretical Flow L/min Motor Power for 6-Pole (kW) Plunger Dia. (mm)
200 220 250 280 315 335 375 400
Rated Pressure (MPa)
160 65 65 65 65 65 65 65 65 ø75
183 60 65 65 65 65 65 65 65 ø80
206 53 58 65 65 65 65 65 65 ø85
231 42 52 59 65 65 65 65 65 ø90
258 38 46 53 59 65 65 65 65 ø95
286 34 42 48 53 60 64 65 65 ø100
315 31 38 43 48 55 58 65 65 ø105

Note: Max. working pressure of JN315 high-pressure water injection pump is limited to 65 MPa.

Standard Motor Version — 1400/335

Pump Speed (min-1) 122 Plunger Stroke (mm) 150
Theoretical Flow L/min Motor Power (kW) Plunger Dia. (mm)
200 220 250 280 315 335 375 400
Rated Pressure (MPa)
241 45 50 57 64 65 65 65 65 ø75
275 40 44 50 56 63 65 65 65 ø80
310 35 39 44 46 55 59 65 65 ø85
348 31 34 39 41 49 53 59 65 ø90
388 28 31 35 37 44 47 53 56 ø95
430 25 28 32 33 40 42 48 51 ø100
475 23 25 29 30 36 38 43 46 ø105

Note: Max. working pressure of JN315 high-pressure water injection pump is limited to 65 MPa.

4-Pole Motor Version — 1250/335

Pump Speed (min-1) 136 Plunger Stroke (mm) 150
Theoretical Flow Motor Power for 4-Pole (kW) Plunger Dia. (mm)
200 220 250 280 315 335 375 400
L/min m³/h Rated Pressure (MPa)
268 16 39 42 48 54 61 68 77 82 ø75
306 18 34 37 42 47 53 60 67 72 ø80
345 20 30 33 38 42 47 53 60 63 ø85
388 23 27 30 33 37.5 42 47 53 56 ø90
432 26 24 26 30 34 38 42 47 51 ø95
480 28 22 24 27 30 34 38 43 46 ø100
530 32 20 22 24 27 31 34 39 41 ø105
581 35 18 20 22 25 28 31 35 38 ø110
635 38 16 18 20 23 26 29 32 34 ø115
691 41 15 16 19 21 24 26 30 32 ø120
750 45 14 15 17 19 22 24 27 29 ø125
811 48 13 14 16 18 20 22 25 27 ø130
875 52 12 13 15 16.6 19 21 23 25 ø135
941 56 11 12 14 15.5 17 19 22 23 ø140
1010 60.6 10 11.3 13 14.4 16 18 20 21 ø145
1080 65 10.6 12 13.5 15 17 19 20 ø150
1154 69.2 10 11 12.6 14 16 18 19 ø155
1230 73.8 10 12 13 15 16 18 ø160

Note: JN315 high-pressure water injection pumps with pressure below 10 MPa are no longer listed.

4-Pole Motor Version — 1250/400

Pump Speed (min-1) 163 Plunger Stroke (mm) 150
Theoretical Flow Motor Power for 4-Pole (kW) Plunger Dia. (mm)
250 280 315 355 400
L/min m³/h Rated Pressure (MPa)
174 10.4 75 83 94 106 120 ø55
207 12.4 63 70 79 89 100 ø60
243 14.6 53 60 67 76 85 ø65