Wilo-Multivert MVI

Your advantages

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

Construction

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

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