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Boiler Feed Water Pump

QDG Series Boiler Feed Water Pump


QDG Series BoilerFeed Water Pump Introduction

Model QDG pump is a horizontalmulti-stage centrifugal pump special use for boiler water supply ortransporting medium similar to hot water with temperature of not higher than160℃.

Performance range of model middle and low pressure QDG series

Flow : 3.75-185 m3/h Corollarypower: 4.0-400kW

Head: 69-684mInlet diameter: 40-150mm


Performance range of model hypo-high pressure QDG series

Flow: 1 5-300m3/h Corollarypower: 75-1250kW

Head: 390-1050m Inletdiameter: 65-200mm

Performancedata sheet

QDG Series Boiler Feed Water Pump Specification

Pump type

Flow

(M3/h)

Head

(m)

Power

(KW)

Speed

(R/min)

QDG6-25

3.75-7.5

73.5-306

4-11

2950

QDG12-25

7.5-15

69-338.4

5.5-22

2950

QDG12-50

7.5-15

139.5-648

18.5-75

2950

QDG25-30

15-30

82.5-340

15-45

2950

QDG25-50

15-30

15.78-618

22-110

2950

QDG46-30

30-55

81-340

22-75

2950

QDG46-50

30-55

138-666

37-132

2950

QDG85-45

55-100

78-459

37-160

2950

QDG85-67

55-100

183-666

90-250

2950

QDG155-67

100-185

177-684

132-400

2950

QDG280-43

185-335

114-423

160-450

1480

QDG280-65

185-355

372-680

500-800

1480

QDG450-60

335-500

171-650

360-1050

680


QDG Series Boiler Feed Water Pump Features

1.Multistage boiler feed water pump compactstructure, small size, beautiful appearance, its vertical structure decidedsmall installation area, its centre of gravity overlap center of pump foot,thus enhancing the running stability and service life of the pump.

2. The boiler feed water pump can meet differentrequirements by increasing or decreasing the pump stages combining cuttingimpeller diameter, without changing the installation area, and this is themultistage pump special own.

3. Pump rotor is provided with low wind ability toachieve smooth operation, little vibration, low noise and long service life .

4. According to the needs, the suction and dischargenozzles can be installed into the same direction, several different directionsin order to meet different connection.

5. Motor plus outer rain cover, pump can be placedin the outdoor use, cancel the pump room, save construction cost.

QDG Series BoilerFeed Water Pump Materials

The QDG multistage boiler feed water pump is widely used for hightemperature hot water supply. There are different material for the pump partsfor different liquid pumped:


No.

Country

Cast Iron

Ductile Iron

Stainless Steel 304

Stainless Steel 316

1

China

HT250

QT500-7

0Cr18Ni9

0Cr17Ni12Mo2

2

US

NO.35

70-50-05

SS304

SS316

3

Japan

FC250

FCD500

SUS304

SUS316

4

Germany

GG25

GGG50

X5CrNi18.9

X5CrNiMo18.10

5

Italy

G25

GS500-7

6

France

FGL250

FGS500-7

Z6CN18.09

Z6CND17.12

7

ISO

250

500-7

11

20,20a

We could also do all kinds of special materials like bronze(brass), duplex stainless steel pump and parts for special application.

QDG Boiler Feed Water Pump Structure

qdg model structure drawing and low pressureboiler water supply pump

low-pressure-boiler-water-pump

structural drawing of qdgmodel hypo-high-pressure boiler water supply pump

high-pressure-boiler-water-pump

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