82 
VEGETABLE GARDENING 
Drilling of the pipes must be done with the greatest 
care to secure perfect alignment of nozzles. For this 
reason many growers prefer to purchase the lines 
already correctly drilled from the irrigation companies. 
The nozzles are placed about 4 feet apart for outdoor 
irrigation and 3 feet apart for greenhouse watering. 
Patented unions are also required for the installation 
of this system. 
Sizes of Pipe for Outdoor Nozzle Lines 
Calculated on outdoor nozzles placed 4 feet apart. If the nozzles are 
closer together larger pipe must be used. 
1 
Nozzle No. 
Length of 
No. feet 
No. feet 
No. feet 
No. feet 
No. feet 
line feet 
i-in. pipe 
1-in. pipe 
lpin. pipe 
lj-m- pipe 
2-in. pipe 
150 
150 
200 
130 
70 
250 
100 
150 
No. 1 
300 
100 
150 
50 
Outdoor 
400 
90 
160 
150 
500 
90 
160 
150 
100 
600 
90 
160 
175 
175 
700 
90 
160 
175 
175 
100 
150 
115 
35 
200 
100 
100 
No 2 
250 
90 
100 
r 60 
Outdoor 
300 
90 
100 
[110 
400 
80 
100 
120 
100 
500 
75 
100 
120 
120 
85 
600 
75 
100 
120 
120 
185 
Distance Between Nozzle Lines for Outdoor Irrigation 
Nozzle.No. 
Pounds 
pressure 
Distance 
between lines, 
feet 
Nozzle No. 
Pounds 
pressure 
Distance 
between lines 
feet 
10 
40 
45 
65 
20 
50 
75 
65 
No. 1 
40 
60 
No. 2 
80 
65 
Outdoor 
45 
60 
Outdoor 
100 and over 
60 
50 
60 
75 and over 
60 
