Self-Priming Centrifugal Pump


Self-Priming Centrifugal Pump
UHN series
(PAT.)

Outstanding self-priming performance even under extreme conditions

Top page
& Site map
Contact us


Structure

UHN type


Self-Priming Centrifugal Pump

Part name
1

Casing

2

Suction cover

4

Impeller

6

Liner ring

10

Bearing bracket

11

Front bearing cover

12

Rear bearing cover

14

Gland

15

Shaft

16

Impeller spacer

17

Sleeve

18

Seal ring

191

Impeller nut

192

Impeller nut

201

Impeller washer

202

Spring washer

21

Ball bearing

22

Ball bearing

231

Stop ring

232

Stop ring

25

Gland packing

27

Deflector

27-1

O-ring

28

Impeller key

29

Coupling key

30

Casing packing

31

Gland bush

32

O-ring

33

O-ring

35

Oil level gauge

361

Bearing packing

362

Bearing packing

37

Oil cap

39

Sleeve packing

40

Sleeve key

41

Pan (Option)

42

Bearing nut

43

Bearing washer

442

Support ring

47

V-ring

48

O-ring

Self-Priming Centrifugal Pump


Self-Priming Centrifugal Pump / Nut type
Self-Priming Centrifugal Pump / Cap-nut type
Self-Priming Centrifugal Pump / Shaft-seal type
Nut type
Cap-nut type
Shaft-seal type


Shaft seal

Gland packing
External flushing type is used for contaminated water pumping or suction pumping.

Non-External-Flushing Mechanical Seal
No need of external sealing water and applicable to any kind of liquid.

Self-Priming Centrifugal Pump / Gland packing
Self-Priming Centrifugal Pump / Non-external-flushing type

Mechanical seal
Various types of mechanical seals can be installed.

Mechanical seal (oil bath)
Oil-bath lubrication allows dry operation.

Self-Priming Centrifugal Pump / Mechanical seal (self-flushing)
Self-Priming Centrifugal Pump / Mechanical seal (oil bath)

We can also provide double mechanical seals.



Materials
Part name
Material code
A
F
X
Y
N
R
Casing
FC200
FC200
SCS13
SCS14
YST130N
CCR10
Impeller
FC200
SCS13
SCS13
SCS14
YST130N
CCR10
Shaft
S45CH
SUS304
SUS304
SUS316
SUS316
SUS304

Special material products are manufactured internally in a thoroughly continuous process from casting under complete material and heat-treatment control.

YOKOTA's corrosion and wear resistant special stainless steel casting (YST) has been adopted for anti-pollution devices, seawater pumps, and other pumps, acquiring highly reputable results.
For details, please refer to Special Stainless Steel YST series.




UHNS/UHNK types:

Priming strengthened types for intake piping across embankments or long intake pipes


Type
System/Construction
UHNS

Self-Priming Centrifugal Pump

Water-air separating impeller is installed in the main pump of UHN type to enhance self-priming with vacuum pump.

Self-Priming Centrifugal Pump

UHNK

Self-Priming Centrifugal Pump

Main pump is standard UHN type.
Self-priming strengthened by vacuum pump in order to reduce self-priming time in long suction piping.
Automatic operation with No-Feed Detector and priming-water detector.

Self-Priming Centrifugal Pump



UHT type:

High corrosion and wear resistance type for high density slurry


Self-Priming Centrifugal Pump / High corrosion and wear resistance type for high density slurry

The front and rear plates (wear resistant plates) are installed to protect the casing.

Specification:

Economical selections can be made from a wide variety of models similar to the UHN type.

Performance:

Impeller configuration can be selected depending on use.

Material:

A wide variety of materials, such as YOKOTA's corrosion and wear resistant special stainless steel casting (YST), are available.

Construction:

Wear resistant plates are installed for handling high density slurry.

Shaft seal:

Gland packing, mechanical seals, Non-External-Flushing Mechanical Seals can be selected depending on use.



UHPR type:

Combined with submersible motor for installation in places subject to submersion


Self-Priming Centrifugal Pump UHPR
Self-Priming Centrifugal Pump UHPR

For installing pumps in such places as floodplains or basements, where there is a possibility of submersion, it is safer to use the UHPR type composed of a UHN type pump and submersible motor which is trouble-free in such situations.
For details on related dimensional outline drawings, please contact us.


SUH type:

High washability self-priming sanitary pump



This is a self-priming pump whose disassembling and cleaning work is easy, most suitable as CIP cleaning water pump and air entrained liquid feed pump in the food and chemicals sectors which require sanitary properties.
For details on related dimensional outline drawings, please contact us.

Features
Structure
Technical data
Selection & Dimensions
Inquiry form


© Yokota Manufacturing Co., Ltd. Tel: +81 82-241-8672 E-mail: yokota@aquadevice.com Terms of Use