Wilo-Multivert MVI

Series description

Special features/product advantages

  • Corrosion-resistant impellers, diffusors and stage housings
  • Drinking water approval for all components that come in contact with the fluid (EPDM version)

Design type

Non-self-priming, multistage high-pressure centrifugal pump in vertical design with in-line connections.

Application

  • Water supply and pressure boosting
  • Fire extinguishing systems
  • Boiler feed
  • Industrial circulation systems
  • Process engineering
  • Cooling water circulation systems
  • Washing and sprinkling systems

Equipment/function

  • Stainless steel pump in inline design (only MVI 1.. to 8..)
  • MVI 1.. to 8..: PN16 version with oval flange; PN25 version with round flange
  • MVI 70.. and 95..: PN16 and PN25 version with round flange

Scope of delivery

  • MVI high-pressure multistage centrifugal pump
  • MVI 1.. – 8..: Oval counter flanges with corresponding screws and O-rings (PN16 variant)
  • Installation and operating instructions

Type key

Example:

MVI 7002/1-3/16/E/3-400-50-2

MVI

Vertical high-pressure multistage centrifugal pump

70

Flow rate in m3/h

02

Number of impellers

1

Number of trimmed impellers

3

Material1 = 1.4301 (AISI 304); [only MVI 8.. and smaller]2 = 1.4404 (AISI 316L)3= pump housing EN-GJL-250 (cataphoretic coating), hydraulics 1.4301 (AISI 304);[only MVI 70.. and 95..]

16

Flange type16 = flange PN16 (round or oval)25 = flange PN25 (round or oval)P = Victaulic coupling [only MVI 8.. and smaller]

E

Gasket typeE = EPDMV = FKM (Viton)

3

1 = 1~ (alternating current); [only MVI 8.. and smaller]3 = 3~ (three-phase current)

400

Connection voltage in V

50

Frequency in Hz

2

Number of poles

Technical data

  • Electrical connection:
    • 1~230 V (±10 %), 50 Hz only MVI 1.. – 8..
    • 3~400 V (±10 %), 50 Hz
    • ≤ 4 kW 230 V/ 400 V; Δ/Y
    • > 4 kW 400 V/ 690 V; Δ/Y
  • Fluid temperature of -15 to +120 °C (with EPDM), (-15 to +90 °C with FKM)
  • Operating pressure max. 16/25 bar
  • Max. inlet pressure of 10 bar
  • Protection class IP 55
  • Flange connections:
    • MVI 1.. – 8.., PN 16; oval flange (G1 – G2)
    • MVI 1.. – 8.., PN 25: Round flange (DN25 – DN40)
  • MVI 1.. – 8.., PN 25: with optional Victaulic connections
  • MVI 70../95.. PN 16/PN 25: Round flange (DN 100)

Materials

MVI 1.. to 8..:

  • Impellers and stage chambers of stainless steel 1.4301 (AISI 304) (1.4404 (AISI 316) for aggressive media)
  • Pump housing of stainless steel 1.4301 (AISI 304) (1.4404 (AISI 316) for aggressive media)
  • Shaft, depending on type, of stainless steel 1.4301 (AISI 304) (1.4404 (AISI 316) for aggressive media)
  • Gasket of EPDM/FKM (Viton)
  • Housing cover of stainless steel 1.4301 (AISI 304) (1.4404 (AISI 316) for aggressive media)
  • Housing bottom of stainless steel 1.4301 (AISI 304) (1.4404 (AISI 316) for aggressive media)
  • Mechanical seal of B-carbon/tungsten carbide, SiC/carbon
  • Jacket pipe of stainless steel 1.4301 (AISI 304) (1.4404 (AISI 316) for aggressive media)
  • Bearing of tungsten carbide
  • Baseplate EN-GJL-250

MVI 70../95..:

  • Impellers of stainless steel 1.4408 (AISI 316)
  • Stage chambers made of 1.4301 (AISI 304) stainless steel
  • Pump housing made of cataphoretic-coated grey cast iron EN-GJL 250
  • Shaft 1.4057 (AISI 431) stainless steel
  • Gasket EPDM
  • Housing cover made of 1.4301 (AISI 304) stainless steel
  • Housing bottom made of 1.4301 (AISI 304) stainless steel
  • Mechanical seal of B-carbon/tungsten carbide, SiC/carbon
  • Pressure shroud made of 1.4301 (AISI 304) stainless steel
  • Bearing of tungsten carbide

Duty chart

Multivert MVI 1 - 95

Pump curves in accordance with ISO 9906: 2012 3B

Downloads

General overview 2018 International version

Article Number 2200591
Edition 2018
Version number 1
Page format 209.9 x 297.0 mm
Number of pages 72

PDF (11 MB)

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