MVIS Wet Rotor Booster Pumps

Nominal bore: Rp 1 до Rp 1 1/2
Pumped medium: potable water, water for heating systems, process water, water glycolic mixtures (up to 40% of glycol)
Temperature of pumped liquid ranging from -10 °С to +50 °С
Process pressure: max. 16 bar
Construction:

• Vertical multistage centrifugal in-line pump made of stainless steel;
• Maintenance-free wet rotor pump;
• The most noiseless booster pump (noise level is about 40 dB (А);
• Three-phase motors (DM);
• Pump construction material: 1.4301 stainless steel;
• Oval contra-flanges are also supplied.

Low level of noise (20 dB [A] lower than of common pumps)

 Wilo-Multivert MVIS centrifugal booster pumps

 Wilo-Multivert MVIS Specification and Advantages:

• Low level of noise (20 dB [A] lower than of common pumps) / scale of noise comparison;
• All pump parts contacting with pumped liquid are resistant to corrosion;
• Wet rotor construction;
• All main pump parts are approved by KTW and WRAS.

 Main Technical Characteristics:

• Power connection: 3~230 V/50 Hz (D), 220 V/60 Hz (D), 400 V/50 Hz (Y) or 380 V/60 Hz (Y);
• Temperature of pumped liquid ranging from -15 to +50° C;
• Process pressure is 16 bar;
• Head in pressure inlet line is 6 bar;
• Protection type: IP 44;
• Nominal external nozzle diameter depending on type: Rp 1, Rp 1 1/4 or Rp 1 1/2.

• MVIS – vertical multistage centrifugal pump with motor flange fitting. All parts contacting with medium are made of INOX (stainless steel 1.4301);
• 4 – nominal delivery (m³/h,  2 poles./ 50 Hz);
• 05 – number of stages.

• Impeller is made of 1.4301 stainless steel;
• Blades are made of  1.4301 stainless steel;
• Pump housing is made of 1.4301 stainless steel;
• Shaft is made of 1. 4122 stainless steel;
• Mechanical seal is made of EPDM (EP 851);
• Lower shaft part is made of 1.4301 stainless steel;
• Forcing casing is made of  1.4301 stainless steel;
• Graphite bearings permeated by synthetic resin;
• Pump-foot  is made of EN-GJL-250.