Wilo-EMU RZP 20… – RZP 80-2…

Special features/product advantages

  • Can be installed vertically or in the pipe (inline)
  • Low clogging due to self cleaning propeller in stainless steel or PUR

Series description

Design type

Recirculation pump, directly driven or with single-stage planetary gear

Application

Pumping of

  • High sewage flow rates via low delivery heads, e.g. between balancing, nitrification and denitrification basins
  • Process, raw, pure and cooling water, e.g. in paint finishing systems or for drinking water treatment

Equipment/function

  • Stationary installation directly at the flow pipe
  • Flexible installation via lowering device
  • Vertical or in-line installation possible

Scope of delivery

  • Recirculation pump with mounted propeller, flow housing and cable
  • Cable length per customer request
  • Accessories per customer request
  • Operating and maintenance manual

Type key

E.g.:

Wilo-EMU RZP 50-3.25-4/8 S25

RZP

Recirculation pump

50

x 10 = nominal propeller diameter in mm

3

Model

25

x 10 = propeller speed in rpm

4

Number of poles

8

x 10 = stator length in mm

S25/K3

S = welded propeller, specification of the blade angle in ° / K = PUR propeller, specification of the number of blades

Technical data

  • Mains connection: 3~400 V, 50 Hz
  • Submerged operating mode: S1
  • Protection class: IP 68
  • Max. fluid temperature: 40 °C
  • Units or directly driven or with single-stage planetary gear
  • Mechanical shaft seal with SiC/SiC pairing
  • Permanently lubricated roller bearings
  • Max. immersion depth: 20 m

Materials

  • Housing parts: EN-GJL-250
  • Propeller: PUR or stainless steel 1.4571
  • Propeller hub: Stainless steel 1.4571
  • Screwed connections: Stainless steel 1.4301 or 1.4571
  • Gear shaft: Stainless steel 1.4462 (RZP 50-3, RZP 60-3, RZP 80-2)
  • Flow housing: Stainless steel 1.4571

Description/construction

Propeller

2-, 3- or 4-blade propeller with a nominal propeller diameter of 200 mm to 800 mm. Entwining-free design made possible by backward-curved incoming flow edge . Propeller up to a diameter of 400 mm have a patented helix hub.

Motor

Wilo-submersible motor of the T-series with standard connection for an easy and efficient adaptation of the motor output. The motor heat is given off directly to the fluid via the housing. The winding is equipped with a temperature monitor. Large-sized inclined (not with RZP 80-2) and grooved ball bearings ensure long service life of the motor bearings.

Seal

RZP 20 … 40

Double shaft sealing with large-volume sealing chamber to collect leakage from the mechanical seal. If desired, the sealing chamber can be equipped with an internal or external sealing chamber electrode. On the fluid side, sealing is achieved using a corrosion- and wear-resistant mechanical seal made of solid silicon carbide material; on the motor side, a rotary shaft seal is used. A seal bushing ensures long-term corrosion-protected fit of the mechanical seal.

RZP 50-3 … 80-2

Double shaft sealing with large-volume gate and sealing chamber to collect leakage from the mechanical seal. If desired, the prechamber can be equipped with an external sealing chamber electrode. On the motor and fluid side, sealing is achieved using a corrosion- and wear-resistant mechanical seal made of solid silicon carbide material. The sealing between the individual chambers is achieved using rotary shaft seals. A seal bushing ensures long-term corrosion-protected fit of the mechanical seal.

Gear RZP 50-3 … 80-2

Single-stage planetary gear with exchangeable transmissions. The gear bearings are dimensioned so that the resulting mixing forces are absorbed and are not transferred to the motor bearings.

Cable

The power cable is a type H07 cable (with T 12 motor) or NSSHÖU (with T 17 and T 20 motor) for heavy mechanical loads. The power cable enters the motor housing through a water pressure-tight cable lead-in with strain relief and bend protection. The individual wires as well as the cable sheath are additionally sealed to keep out fluids.

Duty chart

EMU RZP

Downloads

Certification Booklet Wilo-EMU RZP

Article Number 6074696
Edition 1702
Version number 02
Page format A4
Number of pages 26

PDF (542 kB)

Download

Certification Booklet Wilo-EMU HHV

Article Number 6072705
Edition 1509
Version number 03
Page format A4
Number of pages 32

PDF (606 kB)

Download

Certification Booklet Wilo-EMU AVR/ AVRD/ AVRZ/ AVRZD

Article Number 6078120
Edition 1509
Version number 02
Page format A4
Number of pages 29

PDF (883 kB)

Download

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)

Download

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