DESIGN FEATURES

ND are high specification 2858 pumps. They have

been designed to be robust and offer high pumping

efficiency and low NPSH requirements.

Centrifugal Pumps

1

3

2

Impellers balanced with back vanes on

smaller models as to help clean the seal

chamber as discharge pressures are lower.

Conical pump chamber with internal

mechanical seal available.

Larger model impellers balanced with holes.

4

6

5

Double ball bearing and roller bearing support

available.

Duplex SS shaft as standard.

Pump chamber drain.

7

Two wear rings.

3535

3532

3533

3531 8 9 10

35373536

3534

API 682 Plan 11 seal available.8

A wide range of mechanical and cartridge seal

options.9

Labyrinth seals available. 10

ND RangeMechanically Sealed ISO Pumps

DESIGN SUMMARY

Standards ISO 2858/5199

Configuration Horizontal long coupled

Motors IE2, IE3

Seal Type Single and Double Mechanical

Cartridge, API Plan 11, Packing

SPECIFICATIONS

Maximum Temp 170 oC

Minimum Temp -10 oC

Max Flow 1,500 m 3/hr

Max Head 140 m

Max Pressures 16 bar total system

ATEX Yes

MATERIALS

Standard Options

Rear Casing CF8M SS Duplex, Hastelloy

Front Casing CF8M SS Duplex, Hastelloy

Impeller CF8M SS Duplex, Hastelloy

Shaft Duplex Duplex

Wear Rings Duplex Super Duplex

Hastelloy

Seal SiC/Carb/EPDM SiC/SiC/Viton

many other options available

Centrifugal Pumps

ND - Performance Curves

He

ad

me

tre

s

106 20 50 100 200 5004 5

20

30

40

12

14

16

60

80

100

3m /hour

5x3x12 6x5x12 8x6x12 10x8x12

4x3x16 5x3x16

4x3x25 10x6x25 12x8x25

12x10x25

12x8x1610x8x168x6x166x5x16

4x3x20 5x3x20 12x8x2010x8x208x5x206x4x20

5x3x25

12x10x20

2950 rpm

600 700

120

140

160

8x5x31 6x4x31 10x6x31

10x6x25

12x8x31

12x10x31

15x12x50

3

500106 20 50 100 150 1004 5

He

ad

me

tre

s

3m /hour

1000 16001200 1400

4x3x25 8x5x25 12x8x255x3x25

6

8

10

20

4

5

20x15x25

15x12x2512x10x25

4x3x20 5x3x20 12x8x2010x8x20

8x5x206x4x20

4x3x16 5x3x16 12x8x1610x8x168x6x166x5x16

5x3x12 6x5x12 8x6x12 10x8x12

40

60

80

100

80

8x5x3110x6x31

120 200

12x10x31

12x8x31

20x15x31

12x8x4012x10x40

15x12x31

15x12x40

10x6x25

25x20x40

25x20x31

30x30x40

35x30x4020x15x40

15x12x50 20x15x50

30x25x57

1450 rpm

12x10x20

6x4x25

8x5x25