Calpeda Vertical multi-stage pumps with suction and delivery connections - MXV

Applications

For water supply systems.

For clean non-explosive liquids, without solid, filamentary or abrasive matter

and non-aggressive for stainless steel (with adaptation of sealing materials on

request).

A universal pump for civil and industrial use, for pressure boosting systems,

high-pressure washing plants, irrigation, agricultural uses and sport installations.

Operating conditions

Temperature of liquid: from -15 °C to +110 °C.

Ambient temperature up to 40° C.

Maximum permissible pressure in pump casing: 25 bar, (16 bar for pumps with

oval flanges).

Continuous duty.

Direction of rotation:

- Clockwise as seen from the motor for MXV, MXVL 25,32,40,50,100

- Anticlockwise as seen from the motor for MXV, MXVL 65,80

Motor

Standard-type: 2-pole induction motor, 50 Hz (n ≈ 2900 rpm).

Motor suitable for operation with frequency converter.

Classification scheme IE3 for three-phase motors from 0,75 kW.

Construction IM V1.

Insulation class F.

IP protection: IP55

Three-phase with rated voltage: up to 3 kW 230/400 V;

                                                from 4 kW 400/690 V.

The electropumps comply with the European Regulation no. 547/2012.

Variants (to be specified when ordering)

Pump with flanged ports.

Pump with oval flange ports (O) (for MXV 25,32,40,50).

Pump without motor.

Pump with standard motor.

Other variants (on request)

O-rings FPM.

Other mechanical seal.

Pump with motor of Client's choice (if available).

Single-phase motor 230 V, up to 2.2 kW.

Pump with support feet for horizontal installation (H1 or H2).

Other voltages.

Frequency 60 Hz.

Designation

Example MXV L EI 25-305 O H1 *

MXV = Series

L = AISI 316L vesion (no code = AISI 304 vesion)

EI = With frequency converter I-MAT

25 = DN ports in mm

3 = Rated capacity in m3/h

05 = Number of stages

O = oval flange ports (only for MXV(L) 25,32,40,50)

H1 = with support feet for horizontal installation H, variant 1

* = with motor (or without motor) * with no further designation = with standard motor

MXV(L) 25, 32, 40, 50

MXV: Internal parts in contact with the liquid in chrome-nickel stainless steel AISI 304, with flanges, lantern bracket and base plate in cast iron.

MXVL: Internal parts in contact with the liquid in chrome-nickel stainless steel AISI 316, with flanges, lantern bracket and base plate in cast iron.

Components Materials MXV Materials MXVL

Flange (wetted part) Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

External jacket Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Suction casing Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Delivery casing Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Stage casing Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Impeller Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Lower cover Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Upper cover Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Spacer sleeve Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Shaft Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Plug Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Bearing bushing / Bearing in

stage body Corrosion-resistant carbide / Ceramic Corrosion-resistant carbide / Ceramic

Mechanical seal ISO 3069 - KU Hard metal/Carbon/EPDM Hard metal/Carbon/EPDM

Wear ring PPS PPS

O-ring EPDM EPDM

Oval Counterflanges Stainless Steel AISI 304 (galvanized steel for MXV 50 O) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Counterflanges (on request) Stainless Steel AISI 304 (Steel Fe 430B for MXV 50) Stainless Steel 1.4404 EN 10088 (AISI 316L)

MXV(L) 65, 80, 100

MXV: Internal parts in contact with the liquid in chrome-nickel stainless steel AISI 304 with pump casing and upper cover in cast iron.

MXVL: Internal parts in contact with the liquid with pump casing and upper cover in chrome-nickel-molybdenum stainless steel AISI 316L.

Components Materials MXV Materials MXVL

Pump casing Cast iron GJL 250 EN 1561 Stainless Steel 1.4404 EN 10088 (AISI 316L)

Upper cover Cast iron GJL 250 EN 1561 Stainless Steel 1.4404 EN 10088 (AISI 316L)

External jacket Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Stage casing Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Impeller Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Spacer sleeve Chrome-nickel steel 1.4301 EN 10088 (AISI 304) Stainless Steel 1.4404 EN 10088 (AISI 316L)

Shaft Stainless Steel 1.4305 EN 10088 (AISI 303), (AISI 431 for MXV

100)

Stainless Steel 1.4404 EN 10088 (AISI 316L), (AISI 329 for MXVL

100

Plug Stainless Steel 1.4404 EN 10088 (AISI 316L), (AISI 304 for MXVL

100 Stainless Steel 1.4404 EN 10088 (AISI 316L)

Bearing sleeve Corrosion-resistant, cemented carbide Corrosion-resistant, cemented carbide

Bearing in stage casing Ceramic alumina (Corrosion-resistant, cemented carbide for

MXV 100)

Ceramic alumina (Corrosion-resistant, cemented carbide for

MXV 100)

Mechanical seal ISO 3069 - KU Hard metal/Carbon/EPDM Hard metal/Carbon/EPDM

Wear ring PTFE PTFE

O-ring EPDM EPDM

Counterflanges (on request) Steel 1.0044 EN 10025-2 (Fe 430B) on request

MXV

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ed. 10/2025