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Hydraulic diaphragm

JMD series

Hydraulic diaphragm metering pump, up to 5,000 L/h at up to 407 bar

JMD series: hydraulic diaphragm metering pumps for accurate, repeatable dosing of chemicals and additives. 66 models from 145 to 5000 L/h, with pressure up to 407 bar. Pump-head and diaphragm materials are chosen for your liquid; send us the chemical, concentration and temperature and we will confirm the right head.

  • Hard, compact design with better sealing than plunger-type pumps
  • Variable eccentric adjustment for smooth flow pulsation
  • Refill valve for balanced hydraulic oil replenishment; adjustable safety valve
  • Double diaphragm with rupture alarm recommended for corrosive, flammable or explosive media
  • Power 380 V three-phase, 220 V single-phase or three-phase, 50/60 Hz; variable-frequency control (4–20 mA) or on/off motor control
View 66 models
JMD seriesCNP-S-000026
Flow
145–5000 L/h
Pressure
up to 407 bar
Models
66

Sizes

The 66 models of the JMD series range grouped by motor size. Open the Models tab for every model with its performance data.

Motor sizeFlow rangePressureMotorModels
4000 W motor 157–5000 L/h 8–204 bar 4000 W 22
5500 W motor 152–5000 L/h 11–299 bar 5500 W 22
7500 W motor 145–5000 L/h 15–407 bar 7500 W 22

Models

Filter by duty point, mains frequency or size. Click a model for its performance curve and data.

Model table (PDF)
ModelSeriesFlow L/hPressure barStrokes/minMotor WPlunger mm
JMD5000/1.5JMD 500015 1307500130 Details
JMD5000/1.1JMD 500011 1305500130 Details
JMD5000/0.8JMD 50008 1304000130 Details
JMD4550/1.6JMD 455016 1307500125 Details
JMD4550/1.2JMD 455012 1305500125 Details
JMD4550/0.8JMD 45508 1304000125 Details
JMD4100/1.8JMD 410018 1307500120 Details
JMD4100/1.3JMD 410013 1305500120 Details
JMD4100/0.9JMD 41009 1304000120 Details
JMD3800/1.9JMD 380019 1307500115 Details
JMD3800/1.4JMD 380014 1305500115 Details
JMD3800/1.0JMD 380010 1304000115 Details
JMD3500/2.1JMD 350021 1307500110 Details
JMD3500/1.5JMD 350015 1305500110 Details
JMD3500/1.1JMD 350011 1304000110 Details
JMD3200/2.3JMD 320023 1307500105 Details
JMD3200/1.7JMD 320017 1305500105 Details
JMD3200/1.2JMD 320012 1304000105 Details
JMD2900/2.5JMD 290025 1307500100 Details
JMD2900/1.9JMD 290019 1305500100 Details
JMD2900/1.3JMD 290013 1304000100 Details
JMD2600/2.8JMD 260028 130750095 Details
JMD2600/2.1JMD 260021 130550095 Details
JMD2600/1.4JMD 260014 130400095 Details
JMD2350/3.1JMD 235031 130750090 Details
JMD2350/2.3JMD 235023 130550090 Details
JMD2350/1.6JMD 235016 130400090 Details
JMD2100/3.5JMD 210035 130750085 Details
JMD2100/2.6JMD 210026 130550085 Details
JMD2100/1.8JMD 210018 130400085 Details
JMD1850/4.0JMD 185040 130750080 Details
JMD1850/2.9JMD 185029 130550080 Details
JMD1850/2.0JMD 185020 130400080 Details
JMD1600/4.5JMD 160045 130750075 Details
JMD1600/3.3JMD 160033 130550075 Details
JMD1600/2.3JMD 160023 130400075 Details
JMD1400/5.2JMD 140052 130750070 Details
JMD1400/3.8JMD 140038 130550070 Details
JMD1400/2.6JMD 140026 130400070 Details
JMD1200/6.0JMD 120060 130750065 Details
JMD1200/4.4JMD 120044 130550065 Details
JMD1200/3.0JMD 120030 130400065 Details
JMD1000/7.1JMD 100071 130750060 Details
JMD1000/5.2JMD 100052 130550060 Details
JMD1000/3.5JMD 100035 130400060 Details
JMD860/8.1JMD 86081 130750056 Details
JMD860/6.0JMD 86060 130550056 Details
JMD860/4.1JMD 86041 130400056 Details
JMD700/10.2JMD 700102 130750050 Details
JMD700/7.5JMD 70075 130550050 Details
JMD700/5.1JMD 70051 130400050 Details
JMD570/12.6JMD 570126 130750045 Details
JMD570/9.2JMD 57092 130550045 Details
JMD570/6.3JMD 57063 130400045 Details
JMD450/15.9JMD 450159 130750040 Details
JMD450/11.7JMD 450117 130550040 Details
JMD450/8.0JMD 45080 130400040 Details
JMD340/20.8JMD 340208 130750035 Details
JMD340/15.2JMD 340152 130550035 Details
JMD340/10.4JMD 340104 130400035 Details
JMD250/14.1JMD 240141 130400030 Details
JMD250/20.7JMD 233207 130550030 Details
JMD250/28.3JMD 226283 130750030 Details
JMD170/20.4JMD 157204 130400025 Details
JMD170/29.9JMD 152299 130550025 Details
JMD170/40.7JMD 145407 130750025 Details

Performance range

Every model of the JMD series range by flow and pressure. Click a line or dot to open that model with its full data.

200500100020005000102050100200Flow (L/h)Pressure (bar)JMD5000/1.5JMD5000/1.1JMD5000/0.8JMD4550/1.6JMD4550/1.2JMD4550/0.8JMD4100/1.8JMD4100/1.3JMD4100/0.9JMD3800/1.9JMD3800/1.4JMD3800/1.0JMD3500/2.1JMD3500/1.5JMD3500/1.1JMD3200/2.3JMD3200/1.7JMD3200/1.2JMD2900/2.5JMD2900/1.9JMD2900/1.3JMD2600/2.8JMD2600/2.1JMD2600/1.4JMD2350/3.1JMD2350/2.3JMD2350/1.6JMD2100/3.5JMD2100/2.6JMD2100/1.8JMD1850/4.0JMD1850/2.9JMD1850/2.0JMD1600/4.5JMD1600/3.3JMD1600/2.3JMD1400/5.2JMD1400/3.8JMD1400/2.6JMD1200/6.0JMD1200/4.4JMD1200/3.0JMD1000/7.1JMD1000/5.2JMD1000/3.5JMD860/8.1JMD860/6.0JMD860/4.1JMD700/10.2JMD700/7.5JMD700/5.1JMD570/12.6JMD570/9.2JMD570/6.3JMD450/15.9JMD450/11.7JMD450/8.0JMD340/20.8JMD340/15.2JMD340/10.4JMD250/14.1JMD250/20.7JMD250/28.3JMD170/20.4JMD170/29.9JMD170/40.7

Logarithmic scales. Published catalogue data for clean water; the correct model for your duty is confirmed by our engineers.

Spare parts for JMD series

Typical wear and service parts for this type of pump. The exact part, material and part number depend on the model, so send us the model code (or a nameplate photo) and we confirm and quote the right one.

Request spare parts quote
PartWhat it does
DiaphragmThe flexing membrane that moves the liquid; replaced at the service interval
Check valves (suction and discharge)Valve balls, seats and springs that give one-way flow
Pump headLiquid end in the material suited to the chemical
Gaskets and O-ringsSeal the head, valves and connections
Hydraulic oil and relief / bleed valveHydraulic diaphragm types only: transmits the stroke and protects against over-pressure
Stroke adjuster and motorSets the flow rate and drives the pump

Generic list for this pump type; it is not a part-number catalogue for the series. Our team confirms the correct part for your model before quoting.

Specification & options

Key parameters

  • Max flow rate5000 L/h
  • Max pressure40.7 MPa (407 bar)
  • Accuracy±1 % (10–100 % of flow range)
  • Max suction lift1.5 m water column
  • Medium temperature−10 to +100 °C
  • Max ambient+40 °C, up to 1000 m

Fluid end and materials

Fluid endPump head / valve bodyValve seatValve ballValve plateDiaphragmPlungerTampingSeal ring
304SS304SS304SS304SS / Zirconia304SSPTFE304 + CeramicFluororubber4F/PVDF
316SS316SS316SS304SS / Zirconia316SSPTFE304 + CeramicFluororubber4F/PVDF
PVCPVCPVDFZirconia—PTFE304 + CeramicFluororubberFPM/EPDM
PVDFPVDFPVDFZirconia—PTFE304 + CeramicFluororubberFPM/EPDM

Technical data

Typical applications

  • Environmental protection
  • petrochemical
  • chemical
  • oil refining
  • metallurgy
  • medicine
  • food
  • water treatment

Data basis

  • CNP metering pump selection manual, printed pp. 49–52

Performance values are taken from the published CNP catalogue data. Our engineers confirm the final selection for your liquid, temperature, supply and site before quoting.

Other metering (dosing) pumps

GW / GS series

Mechanical diaphragm

Mechanical diaphragm metering pump, up to 53 L/h at up to 10 bar.

  • Flow 1.1–53 L/h
  • Up to 10 bar
View series

GD series

Mechanical diaphragm

Mechanical diaphragm metering pump, up to 135 L/h at up to 10 bar.

  • Flow 34–135 L/h
  • Up to 10 bar
View series

GM / GB series

Mechanical diaphragm

Mechanical diaphragm metering pump, up to 1,800 L/h at up to 12 bar.

  • Flow 2.3–1800 L/h
  • Up to 12 bar
View series

GX / 2GX series

Mechanical diaphragm

Mechanical diaphragm metering pump, up to 4,800 L/h at up to 6 bar.

  • Flow 910–4800 L/h
  • Up to 6 bar
View series

Need a pump or a spare part?

Send us the flow and head you need, or the model code and nameplate details of the pump you are repairing. Our team replies with a quotation.

Request a Quotation +92 345 9547419