DWO Open Impeller Pumps

DWO Open Impeller Pumps


DWO open impeller pumps are suitable for the following industrial applications: surface treatment of metal products, cooling systems, dish washing machines in eating houses, industrial laundries, washing vegetables, fruit, and other food products. 

WO open impeller centrifugal pumps are designed for pumping both clean and quite contaminated water containing solid particles up to 19 mm in diameter.

Open impeller pump made of AISI 304

DWO Ebara

DWO Impeller

DWO Ebara
DWO Impeller
 
Construction
  • Pump housing: AISI 304 stainless steel;
  • Motor housing: aluminum;
  • Motor shaft: AISI 303 AISI 304 stainless steel;
  • Shaft seal: ceramics/charcoal/NBR;
  • Impeller: AISI 304 stainless steel.
Technical Data of Pump Body
  • Maximal pressure: 8 bar;
  • Maximal water temperature: 80°С;
  • Inlet opening: 2";
  • Outlet opening: 2";
  • Maximal bore diameter: 19 mm
Motor Technical Data
  • Isolation class: F;
  • Protection: IP 55;
  • Voltage: 230V ±10% for a single-phase version, 400V ±10% for a three-phase version;
  • Number of rotations: 3000 r/min;
  • Built-in protection for single-phase versions. 
Application
  • Water treatment;
  • Industrial washing;
  • Painting machines;
  • Heating and air-conditioning;
  • Pumping contaminated liquids.
Operational Characteristics

Operational Characteristics

 

Characteristics/DWO Open Impeller Pumps

Type

Power

Current, А

  Q= Pump Capacity
~1 ~3 kW ~1

~3

l/min 100 200 300 400 550 750 950 1100
230В 230/400В   230V 230V 400V m3/h 6 12 18 24 33 42 57 66
              Н= Head
- DWO 120 D 0.9 - - - 11 10 9 - - - - -
DWO 150 M DWO 150 1.1 6.8 4.4 2.5 9.5 8.9 7.9 6.9 5.1 - - -
DWO 200 M DWO 200 1.5 9 6.1 3.5 12.7 12.3 11.5 10.5 8.6 5.8 - -
- DWO 300 2.2 - 8.3 4.8 15 14.5 13.8 12.9 11.7 9.7 7.5 -
- DWO 400 3 - 11 6.4 17.5 16.9 16.3 15.6 14.3 12.4 9.8 7.6
 
DESIGN

No

PART NAME

MATERIAL

QUANTITY

No

PART NAME

MATERIAL

PCS

1

Casing

AISI 304

1

25

Priming plug

AISI 303

1

3

Motor clamp

Aluminum

1

26

O-ring

NBR

1

4

Outer casing

AISI 304

1

30

Seal guard

AISI 304

1

6

Shaft

AISI 304

1

32

Key

AISI 304

1

7

Impeller

AISI 304

1

34

Nut

AISI 304

1

11

Mechanical seal [3]

Ceramics/Carbon/NBR

1

42

Motor support

Aluminum

1

12

Motor frame with stator

-

1

50

Drop guard

-

1

13

Motor casing

Aluminum

1

52

Connection box [1]

Polypropylene

1

14

Ventilator

Polypropylene

1

56

Connection box washer

NBR

1

15

Ventilator cover

Fe Р04 Zinc-coated steel 

1

75

Washer

AISI 304

1

16

Connection box

-

1

76

Washer

AISI 304

1

17

Connection box cover [2]

Aluminum

1

77

O-ring

NBR

1

18

Protective ring

NBR

1

78

O-ring

NBR

1

19

Pomp bearing

-

1

90

Cover gasket[1]

NBR

1

20

Fan bearing

-

1

92

Gasket

-

1

21

Spacer ring

 С70 steel

1

93

Boot

-

1

22

Connecting rod

Fе 42 Zinc-coated steel  

4

110

Guard [1]

-

 1
23 Condenser [1] - 1 200 Bolt  A2 UNI7323 Stainless Steel 6
24 Priming plug AISI 303 1        
[1] Only for single-stage pumps
[2] Only for three-phase pumps
[3] See mechanical seal design