1.Vertical fall: the difference in height between the water source and the pump site.

2.Lift: the difference in height between the pump site and the point of storage or use.

3.The quantity of flow available from the source.

4.The quantity of water required.

5.The length of pipe from the source to the pump site(called the drive pipe)

6.The length of pipe from the pump to the storage site(called the delivery pipe)


Once this information has been obtained, a calculation can be made to see if the amount of water needed can be supplied by a ram. The formula is:

D =Q x F x E÷L

Where:

D=amount delivered in cube meters per hour.

Q=quantity of water supplied from the source in cube meters per hour.

F=the fall or height of the source above the ram in meters.

E=the efficiency of the ram (for derkor models use 0.6)

L=the lift height of the point of use above the ram in meters


Table solves this formula for rams with efficiencies of 60 percent, a supply of 1 cube meter per hour, and with the working fall and lift shown in the table. For supplies greater than 1 cube meter per hour, simply multiply by the number of Cube meters supplied.

Table. Ram Performance Data for a Supply(Q) of 1m3/h

Cube meters Delivered Over 1 hour

Working fall

Lift - Vertical Height to which Water is Raised Above the Ram (m)

(meters)

5

7.5

10

15

20

30

40

50

60

70

80

90

100

110

120

130

140

0.5

0.06

0.04

0.03

0.02

0.015

0.01












1

0.12

0.08

0.06

0.04

0.03

0.02

0.015

0.012










1.5

0.18

0.12

0.09

0.06

0.045

0.03

0.0225

0.018

0.015

0.0129








2

0.24

0.16

0.12

0.08

0.06

0.04

0.03

0.024

0.02

0.0171

0.0150

0.0133

0.0120





2.5

0.3

0.2

0.15

0.1

0.075

0.05

0.0375

0.03

0.025

0.0214

0.0188

0.0167

0.0150

0.0136

0.0125



3


0.24

0.18

0.12

0.09

0.06

0.045

0.036

0.03

0.0257

0.0225

0.0200

0.0180

0.0164

0.0150

0.0138


3.5


0.28

0.21

0.14

0.105

0.07

0.0525

0.042

0.035

0.0300

0.0263

0.0233

0.0210

0.0191

0.0175

0.0162

0.0150

4



0.24

0.16

0.12

0.08

0.06

0.048

0.04

0.0343

0.0300

0.0267

0.0240

0.0218

0.0200

0.0185

0.0171

4.5



0.27

0.18

0.135

0.09

0.0675

0.054

0.045

0.0386

0.0338

0.0300

0.0270

0.0245

0.0225

0.0208

0.0193

5



0.3

0.2

0.15

0.1

0.075

0.06

0.05

0.0429

0.0375

0.0333

0.0300

0.0273

0.0250

0.0231

0.0214

6




0.24

0.18

0.12

0.09

0.072

0.06

0.0514

0.0450

0.0400

0.0360

0.0327

0.0300

0.0277

0.0257

7




0.28

0.21

0.14

0.105

0.084

0.07

0.0600

0.0525

0.0467

0.0420

0.0382

0.0350

0.0323

0.0300

8





0.24

0.16

0.12

0.096

0.08

0.0686

0.0600

0.0533

0.0480

0.0436

0.0400

0.0369

0.0343

9





0.27

0.18

0.135

0.108

0.09

0.0771

0.0675

0.0600

0.0540

0.0491

0.0450

0.0415

0.0386

10





0.3

0.2

0.15

0.12

0.1

0.0857

0.0750

0.0667

0.0600

0.0545

0.0500

0.0462

0.0429

12






0.24

0.18

0.144

0.12

0.1029

0.0900

0.0800

0.0720

0.0655

0.0600

0.0554

0.0514

14






0.28

0.21

0.168

0.14

0.1200

0.1050

0.0933

0.0840

0.0764

0.0700

0.0646

0.0600

16






0.32

0.24

0.192

0.16

0.1371

0.1200

0.1067

0.0960

0.0873

0.0800

0.0738

0.0686

18







0.27

0.216

0.18

0.1543

0.1350

0.1200

0.1080

0.0982

0.0900

0.0831

0.0771

 

Model

quantity of water supplied(Q)

Lift

DK-Z210T

8-12 m3/h

<80 meters

DK-Z315T

20-30 m3/h

<80 meters

DK-Z420T

40-50 m3/h

<80 meters

DK-Z630T

70-80 m3/h

<80 meters

DK-Z840T

95-105 m3/h

<80 meters

DK-Z1050T

140-160 m3/h

<80 meters

DK-Z1250T

230-250 m3/h

<80 meters

DK-Z1460T

290-330 m3/h

<80 meters

 

 

 

DK-Z210-3

10-15 m3/h

<140 meters

DK-Z315-3

17-27 m3/h

<140 meters

DK-Z420-3

30-40 m3/h

<140 meters

DK-Z630-3

45-55 m3/h

<140 meters

DK-Z840-3

75-90 m3/h

<140 meters

DK-Z1050-3

140-160 m3/h

<140 meters

DK-Z1250-3

180-220 m3/h

<140 meters

DK-Z1460-3

280-320 m3/h

<140 meters

How much water it pump

Technology