About Pump JESX-JEX

Self-priming centrifugal surface pump in AISI 304 stainless steel, suitable for domestic use


  • Practical and easy to use
  • Lightweight and easily transportable


  • Total head from 15 to 49 m
  • Capacity from 0.3 to 4.5 m3/h
  • Maximum operating pressure 6 bar
  • Maximum liquid temperature 45°C
  • Maximum working width 8 m

description Pump jesx-jex

Self-priming centrifugal pump in AISI 304 steel with a special hydraulic system including a Venturi unit (ejector and diffuser) that can suck water up to 8 metres deep.
Suitable for residential applications: gardening and irrigation.
Lightweight and easily transportable, small in size.
For further technical information see the Databook

• Domestic pressurisation
• Pressure boosting in general
• Garden irrigation systems
• Vehicle washing
• Handling of clean water

Overview of technical data jesx-jex

Flow rateFrom 0.3 to 4.5 m³/h
Total headFrom 11.5 to 49 m
Max. working pressure6 bar
Max. temperature of the liquid45°C
Max. suction depth8 m
Insulation classF
Protection degreeIP44 (IP55 on request)
VoltageSingle-phase 1~230V ±10%
Three-phase 3~230/400V ±10%

Material Pump jesx-jex

Pump bodyStainless steel AISI 304 (EN 1.4301)
ImpellerStainless steel AISI 304 (EN 1.4301) for JEX
PPE+PS with glass fibres for JESX
ShaftStainless steel AISI 303 (EN 1.4305) (part in contact with liquid)
Mechanical sealCeramic/Carbon/NBR (standard)
Motor supportAluminium

pump jesx-jex

Self-priming electric pumps in stainless steel AISI 304

The electric pumps of the JESX – JEX series are electric pumps in AISI 304 stainless steel. These are self-priming pumps equipped with Venturi group (ejector and diffuser), which are easy to use and light thanks to their small size. Constructively they have the pump body, the support, the seal bearing disc in AISI 304 steel. They are equipped with an AISI 303 shaft (for the part in contact with the liquid). The impellers are different depending on the model: for the JESX electric pumps the impeller is in PPE + PS reinforced with glass fibres, while for the JEX the impeller is in AISI 304. For both versions the mechanical seal is in Ceramic/Carbon/NBR. The motors are 2-pole, asynchronous, self ventilated.

High energy efficiency IE3 starting from 0.75 kW


The specifications below qualify the curves shown on the following pages.
Tolerances according to ISO 9906:2012 – grade 3B
The curves refer to effective speed of asynchronous motors at 50 Hz
Measurements were carried out with clean water at 20°C of temperature and with a kinematic viscosity of  = 1 mm2/s (1 cSt)

The NPSH curve is an average curve obtained in the same conditions of performance curve.
The continuous curves indicate the recommended working range. The dotted curve is only a guide.

In order to avoid the risk of over-heating, the pumps should not be used at a flow rate below 10% of best efficiency point.

Symbols explanation:
Q = volume flow rate
H = total head



Pump TypePowerQ=Capacity
JESXM 5JESX 50.370.5 3228231511.5
JESXM 6JESX 60.440.6 3631.5261713.5
JESXM 8JESX 80.60.8 4237292016


Pump TypePowerQ=Capacity
JEXM 80JEX 800.60.8 41332926.523.520.518
JEXM 100JEX 1000.751 453733.530272421
JEXM 120JEX 1200.881.2 5041373430.527.524.5
JEXM 150JEX 1501.11.5 594944.540.537343129.5