Multistage, non-self-priming, horizontal high-pressure centrifugal pump in block design with horizontal suction- and vertical pressure port.

The pump has a compact design with a continuous motor pump shaft and a bidirectional mechanical seal.

The pump is suitable for water supply and pressure boosting, industrial recirculation systems, process water and cooling water circuits. It can also be used in washing systems as well as for irrigation.

Special features/product advantages

• Space-saving, compact block design
• All hydraulic parts which come into contact with the fluid, such as stage chambers, impellers and diffusors and the pump housing are made of stainless steel
• Drinking water approval (KTW, WRAS) for all components in contact with the fluid (EPDM version)

Scope of delivery

• Wilo-Economy MHI high-pressure multistage centrifugal pump
• Installation and operating instructions

Design notes

• Motor protection for three-phase AC motor is optional or to be provided on-site
• Single-phase AC motor equipped with built-in thermal motor protection and capacitor

Operating data

• Fluid media
  Water

Product data

• Min. fluid temperature T_min
  -15 °C
• Max. fluid temperature T_max
  110 °C
• Max. ambient temperature T_max
  40 °C
• Maximum operating pressure PN
  10 bar
• Maximum inlet pressure p inl
  6 bar

Motor data

• Mains connection
  3~400 V, 50 Hz
• Voltage tolerance
  ±10 %
• Rated power P₂
  1100.00 W
• Rated current I_N
  2.80 A
• Rated speed n
  2900 rpm
• Power factor cos φ
  0.83
• Motor efficiency η_M 50%
  81.5
• Motor efficiency η_M 75%
  82.7
• Motor efficiency η_M 100%
  82.7
• Insulation class
  F
• Protection class
  IP54

Materials

• Pump housing
  1.4301
• Impeller
  1.4404
• Shaft
  1.4301
• Shaft seal
  BQ1E3GG
• Gasket material
  EPDM

Installation dimensions

• Pipe connection on the suction side RPS
  Rp 1¼
• Pipe connection on the pressure side RPD
  Rp 1

Information for order placements

• Brand
  Wilo
• Product description
  Economy MHI 406 (3~400 V, EPDM)
• Net weight, approx. m
  16 kg
• Article number
  4210735