NGK

CORROSIONRESISTANT PUMPSNGKNGK utilizes its extensive technologies andexperience in the field of corrosion resistance toprovide top-grade corrosion resistant pumps.

CERAMICPROCESS PUMPEB Series

ISO Standard PFA Pump
This is a centrifugal pump with a thick Teflon
PFA on par ts that come in contact withchemical solutions.
• Conforms to ISO 2858
• Capacity range: 0.05-5m3/min• Head: 10-90 m• Maximum service temperature: 150˚C

Important notes concerning this catalog(1) The properties, service range, applications, dimensions, shapes, materials, and other specifications listed in this catalog are
representative or standard specifications. Due to the conditions of use or other factor, the selected specifications of theactual product may differ from those listed in the catalog. For details, please contact the nearest sales office.
(2) In order to ensure safe and correct use of the product, be sure to carefully read the instruction manual and other materials
issued by NGK and correctly understand the product characteristics before performing product installation, maintenance,
and inspection.
(3) The information in this catalog may be changed without notice.

NGK CHEMITECH, LTD.
Main Office735, Shimotomi, Tokorozawa-city, Saitama 359-0001

Tel. (81) 4-2942-1185

Fax. (81) 4-2942-8180

Nagoya Sales Office

2-56, Suda-cho, Mizuho-ku, Nagoya 467-8530

Tel. (81) 52-872-8595

Fax. (81) 52-872-8602

Tokyo Sales Office

Nishi-ikebukuro TS Bldg. 10F, 3-1-15, Nishi-ikebukuro, Toshima-ku, Tokyo 171-0021

Tel. (81) 3-5391-3631

Fax. (81) 3-5391-3635

Osaka Sales Office

Midosuji Mitsui Bldg. 11F, 4-1-3, Bingomachi, Chuo-ku, Osaka 541-0051

Tel. (81) 6-6206-5810

Fax. (81) 6-6206-5809

Tel. (81) 834-22-9851

Fax. (81) 834-22-9853

Tokuyama Branch Office Tokuyama Asahiseimei Bldg. 3F, 2-18, Miyukidori, Shunan-city, Yamaguchi 745-0034

A2106

ET

SERIESCERAMICPROCESS PUMPET

SERIESThe ET series of ceramic pumps are process
pumps that are trusted at the heart of all
kinds of chemical processes worldwide.
The ET series of ceramic pumps are chemical process pumps developed by
NGK INSULATORS, LTD. These pumps incorporate tough highly corrosion andwear resistant ceramics for parts in contact with corrosive chemicals.
They conform to International Standards (ISO 2858) and JIS standards,
and are designed using unique technologies to meet user expectations tolower maintenance and running costs.

CHARACTERISTICS

1 Corrosion Resistance
NGK Chemical Ceramics have been used in casing impellers andother parts in contact with corrosive solutions. These ceramics
possess incredibly high resistance to practically all acids and organic
solvents.
In addition there is no risk of corrosion caused by chemical
penetration, which is an unavoidable downside of resins, or ofelectrical corrosion, which is frequently seen in titanium and othercorrosion resistant metals.
However they cannot be used with alkalis, hydrofluoric acid, or fluorinecompounds.

Service Pressure
2 Maximum& Temperature Rating
Strength and heat resistance make ceramics the perfect material forthe construction of this type of pump. In addition the pump exterior iscovered by cast-iron armor, providing an extremely strong structure.
The use of ceramics avoids heat deformation and ensures extended
superior performance.
Temperature range: -10 to 120°C
The heat resistance temperature varies depending on the liquid properties.
Please consult with us regarding use at temperatures below -10°C or
above 120°C.

The superb corrosion-resistant type ET pump delivers power at the heart ofchemical processes.
NGK manufactured the world’s first ceramic pumps in 1931 and now offers anenhanced lineup in the ET series, ranging to high capacities and high heads.

CautionThis product is among the restricted product types listed inAppended Table 1 of the Export Trade Control Order. Export
requires export permission based on the Foreign Exchange
and Foreign Trade Act and other relevant laws.

1

2

CHARACTERISTICS

Model Configuration

3 Wear Resistance

5 Interchangeability

Since extra hard ceramics are used in the ET series,
these pumps have high wear resistance and exhibit
outstanding durability even when used for pumping
slurry liquids.

NGK pumps c onform to international standards
and have fully interchangeable par ts. Par ts areinterchangeable with standard PFA pumps and large
diameter Epolite pumps.

Wear Resistance Tests (based on JIS-A5209)
Wear

5

Material

10

Model

Suction
Diameter

Discharge
Diameter

ET-0516

25

25

ET-101650

40

ET-1021

50

40

CasingImpeller

End Cover

Frame Adapter

Bearing Stand

15 mg

NGK Chemical Ceramics
Former Ceramics

S FrameBearing StandHigh Silicon Cast Iron

（shaft diameterφ35）

Note: In these tests the samples were set level and at 45˚, and theweight reduction after abrasive material was dropped from a height of 1.1
m was used to measure the amount of wear. The above results showthat the amount of wear with NGK Chemical Ceramics is 50% less thanwith other materials

ET-161780

50

ET-162180

50ET-1026

50

40

ET-162680

50

Physical Properties of NGK Chemical Ceramics
NGK
ChemicalCeramics

FormerCeramics

Color

Blue

White

Apparent Specific Gravity

2.50

2.30

122

93

137

103

MPa

588

490

Coefficient of thermal expansion

10-6／℃

6.0

5.8*Toughness

MPa.m1/2

0.94

0.8

Unit

Bending
Strength(Unglazed)

MPa(Glazed)Compressive Strength

6 Pump PerformanceSuperior pump efficiency can be achieved due to the use of
the inherently strong ceramic impeller, resulting in reduced
running costs.

Note: The values here are representative values from test pieces.
*Toughness is a value indicating strength against damage and crack
propagation under an impact load. Put simply it is one criteria for how
difficult it is to break a product.)

M FrameBearing Stand

4 Operation

7 Reliable Shaft Seal

The ET series multi-use pumps conform to international
standards (ISO 2858) and new JIS standards. Their
compact, modular design makes easy plant design
possible.

NGK’s experience in the field of corrosion resistant andwear resistant pumps has resulted in the developmentof various types of shaft seals, all possessing superior
performance.

As the pumps are back pull-out units, parts replacement
and other maintenance can be carried out easily without
removing piping.

Leak-less and trouble-free operation is assured over a long
period of time. Maintenance costs are also reduced.

（shaft diameterφ50）

ET-2021100

80

ET-2026100

80

ET-3028150

125

ET-3034

3

150

125

L FrameBearing Stand（shaft diameterφ70）

4

● CERAMIC SLEEVE● END COVER:

STRUCTURE

Ceramic + Cast-iron armor

The ceramic sleeve provides
a secure shaft seal without
permeation or cold flow.

● SHAFT● BEARING STAND

The shaft is completely safe at
critical speeds.

The bearing stand is of the backpull-out type so assembly anddisassembly are easily performed
without the need to remove themain piping or motor.

● CASING:

Ceramic + Cast-iron armor● IMPELLER O-RING:FLUORORUBBER● IMPELLER:

Ceramic + Carbon steel boss

● MECHANICAL SEAL
All types of mechanical and glandseal can be installed.

● BEARING CASE
Adjustment of the impeller
clearance is done externally,
ensuring maximum efficiency.

● COUPLING
A spacer coupling is standard
equipment.

● PUMP ASSEMBLY
All parts of the pump that contact
corrosive chemicals are assembled bymetal fittings on both sides, for easy
centering during reassembly.

5

COMPONENTS
The following components aresupplied as standard equipment.

Chemflow bellows for the suction
and discharge ports...................................................1 set
Spacer coupling and cover........................................1 set
Anchor bolts...............................................................1 set
Totally enclosed fan-cooled outdoor type motor........1 unit

6

SHAFT SEALINGCOMPOSITE PERFORMANCE CURVESNGK has selected and installed the most economical and effective shaft sealing devices for the ET series.
The following list outlines the sealing systems available and the conditions under which their use is recommended (temperature,pressure, corrosiveness of the chemical used, presence of slurry, etc.).
Shaft Seal
Systems

Outside balance typemechanical seal

Double typemechanical seal

Bellows typemechanical seal

50Hz area

Gland type seal

60
50

ET-2021

ET-1021

5.5kW

60
40
Total head（m）
Total head（m）

50

Construction

Stuffing box
pressure MPaG
OperaringtemperatureMainapplication※ 0.3MPa or lower※120℃ or less

Clear solutions containing nosolids (if the solution contains
slurry, external flushing is
recommended)※ 0.5MPa or lower※120℃ or lessPreventing external
leakage(water supplied externally)※ 0.35MPa or lower※120℃ or less

Clear solutions containing
no solids※ In all cases when the stationary seal ring is ceramic and the rotary seal ring is carbon.
※ The above values change depending upon the specifications.

30
40
25

2.2kW 5.5kW

30

ET-1016 ET-0516
2.2kW

20
25

1.5kW

20
15

10
15
9

※ 0.1MPa or lower

ET-1016
ET-1021ET-0516
ET-1026※100℃ or less

For solutions containing
15% slurry or less(water supplied externally)

0.03

0.05

0.2

7.5kW11kW

2.2kW
0.4 0.5

0.8

5.5kW
1

Capacity（m3／min）
ET-16172.2kW

0.08 0.1

0.2

0.3

0.4 0.51450 rpmrpm
2900

ET-2026
5.5kW ET-3034

ET-20210.32900 rpm

ET-2026 ET-3034
7.5kW
11kW
11kW

ET-1621 3.7kW
ET-2021
1.5kW
2.2kW
ET-1621
1.5kW
ET-161737kW

11kW
ET-3028

ET-1021
ET-1026

ET-10168
ET-10210.75kW
0.75kW
7
10
ET-05169
ET-10160.03
0.05
0.08 0.1
8
0.75kW7
ET-0516

37kW

7.5kW

3.7kW 5.5kW

2.2kW ET-1626

1.5kW
0.75kW

30kW
22kW
18.5kW
ET-2021
7.5kW
11kW
30kW
ET-1621
15kW
22kW
ET-3034
18.5kW
3.7kW
ET-1617
7.5kW
11kW
22kW
30kW
15kW
ET-3034
5.5kW
3.7kW
ET-3028
ET-1617
ET-1626
22kW
30kW
ET-1621950 rpm
1450 rpm
2
7.5kW

4

5

2

4

5

950 rpm

0.8

1Capacity（m3／min）

60Hz area60

ET-162102

Total head（m）
Total head（m）

50
60
40

3.7kW

50

ET-0516

30

3.7kW

30
20
25

ET-0516
2.2kW

3.7kW

11kW
5.5kW

ET-1626
5.5kW
ET-1026

ET-1026

1.5kW

10
15
9
8
ET-1016
ET-0516
7
10
9
0.03
0.05
8
ET-05167
0.05

0.75kW

30kW

15kW
11kW
7.5kW
ET-1617

ET-303404
22kW
30kW

11kW
7.5kW
5.5kW
7.5kW

18.5kW
ET-303404
30kW
22kW

ET-3028

ET-2026

ET-16215.5kW

1.5kW 3.7kW
ET-1021
ET-1016

22kW
ET-202102

15kW

3.7kW
ET-1626
ET-1021
2.2kW

30kW

15kW

ET-1617
ET-162102

ET-1016
3.7kW

20
15

0.03

15kW

ET-1016

40
25

11kW

ET-162102

ET-202102

ET-162102

ET-1621
ET-1617

ET-302837kW
7.5kW 7.5kW 18.5kW
22kW
ET-3034
18.5kW
ET-2026
ET-2021
15kW

2.2kW
3.7kW

2.2kW
1.5kW
3.7kW
ET-2026
ET-1617
2.2kW

7.5kW
5.5kW

ET-3034
ET-3028

ET-2021

15kW

3500 rpm

18.5kW
1750 rpm
rpm
3500

5.5kW
5.5kW
ET-30281150 rpm
1750 rpm

0.08 0.1
0.75kW

0.2

0.31.5kW
0.4 0.5
0.8
ET-2026
3／min）
Capacity（m
2.2kW

1

0.08 0.1

0.2

0.3

1

0.4 0.5

37kW

0.8

5.5kW

2

3

4

5

2

3

4

5

1150 rpm

Capacity（m3／min）

Power shown is measured with a specific gravity of 1.0

7

8

Centrifugal Pump Inquiry Checksheet
For pump inquiries, please check the following items and then contact an NGK sales office.
Check item

OVERALL DIMENSIONS

Check contents

Notes

Owner nameApplication

If overseas, enter the destination country name.
Update or Spare or Addition or New or Change from othercompany or Change from different model

RequiredYes or No

Required

Reason for inquiry
Existing pump
Serial No. of existing product

If the existing product is an NGK pump, enter the serial No.

Item No.
Item name
Pump series selection

ET or EB or EZ
ET pump: Ceramic pump, EB pump: PFA-lined pump, EZ pump: Ceramic magnetic pump

Quantity

Required

Liquid pumped
PH of liquid pumped

Required. Entering “acidic” or “alkali” is also OK.
[℃ ]Liquid temp.

[mPa-s]Liquid viscosity at O.T.
Liquid specific gravity at O.T.
SlurryRequired
If unknown, a model will be selected for 1 mPa-s.
If unknown, a model will be selected for specific gravity of 1.

Yes or No

Required. If slurry is present, 4-pole is recommended.

Slurry name

Flange standard: JIS 10K flange thin type equivalent.

Slurry density[wt%]

Slurry particle size[μm]

If unknown, a model will be selected for 0 wt%.

Slurry hardness
SymbolModel
ET-0516

Spacercoupling

Pump (mm)
ID
25

OD

B

L

E

K

X

Common base number for the applicable motor (with spacer coupling)
80

90L

100L 112M 132S 132M 160M 160L 180M 180L 200M 200L 225S 225M 250S 250M

25
160

ET-1016
50

40
385

＃33

ET-1617

＃44

＃55

100

180
160
80

50

ET-1621200

100

ET-1026

50

40

ET-1626

80

50

＃44
125

225

180

500

＃55

100

ET-2021
100

＃66

140

＃77

80
125

ET-2026250

200

ET-3028
150

125

160

600

355

280

Flow rate[m3/h or m3/min]

Required

Total head[m]

Required

NPSHa

[m]

Suction pressure

132

80

ET-1021

Vapor pressure at O.T.

※L-1

180

※L-2

ET-3034■ COMMON BASE DIMENSIONS（Unit：mm）

Base No.

BN

BL

BF

G

BE

M

FD

FL

FG

＃33

910

155

600

90

350

90

M16

242

50

＃44

1020

180

660

110

400

90

M20

310

70

＃55

1140

200

740

130

440

100

M20

310

70

＃66

1270

215

840

130

490

120

M20

310

70

＃77

1420

240

940

155

550

160

M24

358

80

※ L-1

1460

Front 230
Rear 290

940

120

460

180

M24

358

60

※ L-2

1600

270

1060

160

460

180

M24

358

60

Note:
In case the height of the motor(H) is greater than that of thepump (K), spacers are inserted
under the pump so that theheights match.
The ※signifies the NGK large
diameter pump standard base.

Motor supplied by

NGK or Customer

Required

Motor assembled by

NGK or Customer

RequiredFrequency

60 Hz or 50 Hz

Required if motor is to be supplied by NGK.

Model

Non-explosion-proof or eG3 or d2G4

Required if motor is to be supplied by NGK.

Outdoor / Indoor

Outdoor or Indoor

Required if motor is to be supplied by NGK.

Voltage

200V or 220V or 400V or 440V or Other

Required if motor is to be supplied by NGK.

High efficiency motor

Required or Not required

Required if motor is to be supplied by NGK.

Special specifications

Packing type provided with threaded joint steel or Packing
type leading method with threads for protective tube or Other

If a Packing type provided with threaded joint steel (orpacking type leading method with threads for protective tube),specify the cable finished O.D. and wire conduit diameter.

Manufacturer

Toshiba or Other manufacturer

Shaft seal type

Single seal or Double seal or Gland seal

Flushing

Necessary (liquid type: Clean water or Other) or Not necessary

Material of seal ring:
Stationary × Rotary

SiC × SiC or Ceramic × Carbon or Other:

Mechanical seal O-ring

FKM or Kalrez

PaintStandard or Specified

Specified paintStandard paint or Specified:Required

Paint coats

Under: ___ coats, Intermediate: ___ coats, Top: ___ coats

RequiredSpecified color

Standard or Specified

Required

If necessary, enter the liquids that can be mixed on theprocess side.

Standard paint: Green Suboid AR, undercoat and topcoat × 1
each, MUNSELL N6.5
If a paint is specified, enter the following.

In addition to the following standard submitted documents,
enter any other necessary documents.

Submitted documents

Standards submitted documents: Test report, production specifications, performance curve, pump outline drawing, pump cross-sectional drawing,
shaft seal drawing, drawings of accessories (drawing of motor, etc.)
In addition to the following standard inspection items,
enter any other necessary tests.

TestingStandard inspection items: Performance test, Visual inspection, Dimensional inspection
Witnessed test

Required or Not required

Other

9

10