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 fallLift - Vertical Height to which Water is Raised Above the Ram (m)
(meters)57.510152030405060708090100110120130140
0.50.060.040.030.020.0150.01










10.120.080.060.040.030.020.0150.012








1.50.180.120.090.060.0450.030.02250.0180.0150.0129






20.240.160.120.080.060.040.030.0240.020.01710.01500.01330.0120



2.50.30.20.150.10.0750.050.03750.030.0250.02140.01880.01670.01500.01360.0125

3
0.240.180.120.090.060.0450.0360.030.02570.02250.02000.01800.01640.01500.0138
3.5
0.280.210.140.1050.070.05250.0420.0350.03000.02630.02330.02100.01910.01750.01620.0150
4

0.240.160.120.080.060.0480.040.03430.03000.02670.02400.02180.02000.01850.0171
4.5

0.270.180.1350.090.06750.0540.0450.03860.03380.03000.02700.02450.02250.02080.0193
5

0.30.20.150.10.0750.060.050.04290.03750.03330.03000.02730.02500.02310.0214
6


0.240.180.120.090.0720.060.05140.04500.04000.03600.03270.03000.02770.0257
7


0.280.210.140.1050.0840.070.06000.05250.04670.04200.03820.03500.03230.0300
8



0.240.160.120.0960.080.06860.06000.05330.04800.04360.04000.03690.0343
9



0.270.180.1350.1080.090.07710.06750.06000.05400.04910.04500.04150.0386
10



0.30.20.150.120.10.08570.07500.06670.06000.05450.05000.04620.0429
12




0.240.180.1440.120.10290.09000.08000.07200.06550.06000.05540.0514
14




0.280.210.1680.140.12000.10500.09330.08400.07640.07000.06460.0600
16




0.320.240.1920.160.13710.12000.10670.09600.08730.08000.07380.0686
18





0.270.2160.180.15430.13500.12000.10800.09820.09000.08310.0771

 

Modelquantity of water supplied(Q)Lift
DK-Z315T10-15 m3/h<80 meters
DK-Z420T15-25 m3/h<80 meters
DK-Z420-325-40 m3/h<140 meters
DK-Z630T30-50 m3/h<80 meters
DK-Z630-345-65 m3/h<140 meters
DK-Z840T50-70 m3/h<80 meters
DK-Z840-380-110 m3/h<140 meters
DK-Z840-8150-200 m3/h<140 meters
DK-Z1460-8290-360 m3/h<140 meters
DK-Z2480T250-320 m3/h<80 meters
DK-Z2480-3480-550 m3/h<140 meters

How much water it pump

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