7.2 Approximate value of distance X, as a function of pump flow rate.
valve
flow rate [l/
size
3/4"B
1"B
1"1/4
B-R-G
1"1/2
B-R-G
2"
B-R-G
2"1/2
B
NOTE:
• Down travel flow rate is assumed to be equal to up travel flow rate.
• Besides using this table, the installing technician should make sure that the valve is
triggered within the limits required by code regulations.
50 Hz
pump
Distance X
[mm]
min]
8
3,35
12
4
15
4,5
20
5,2
23
5,5
25
4,5
30
5,0
35
5,5
43
6,0
55
7,0
75
8,0
100
9,5
55
5,5
75
7,0
100
8,0
125
9,0
150
10,0
180
11,0
210
12,0
180
9,5
210
10,5
250
12,0
300
13,0
360
14,5
430
15,5
430
14,0
500
15,5
600
18,5
600
18,5
720
24,5
860
26,5
1000
27,5
N° of turn
pump
on screw
flow rate [l/
min]
3 1/4
10
4
15
4 1/2
18
5 1/4
24
5 1/2
***
3 1/2
***
4
30
4 1/2
36
4 3/4
42
5 1/2
52
6 1/2
66
7 1/2
90
4 1/2
52
5 1/2
66
6 1/2
90
7 1/4
120
8
150
8 3/4
180
9 1/2
216
7 1/2
180
8 1/2
216
9 1/2
252
10 1/2
300
11 1/2
360
12 1/2
432
11 1/4
432
12 1/2
516
14 3/4
600
14 3/4
600
16 1/4
720
17 3/4
864
18 1/4
1032
23
60 Hz
Distance X
N° of turn on
[mm]
screw
3,85
3 3/4
4,5
4 1/2
5
5
5,67
5 3/4
***
***
***
***
5,0
4
5,5
4 1/2
6,0
4 3/4
6,5
5 1/4
7,5
6
8,5
6 3/4
5,5
4 1/2
6,5
5 1/4
7,5
6
9,0
7 1/4
10,0
8
11,0
8 3/4
12,0
9 1/2
9,5
7 1/2
10,5
8 1/2
12,0
9 1/2
13,0
10 1/2
14,0
11 1/4
15,5
12 1/2
14,0
11 1/4
16,0
12 3/4
18,5
14 3/4
18,5
14 3/4
24,5
16 1/4
26,5
17 3/4
27,5
18 1/4
GB