Service Instructions
There is no service required for the differential by-pass valves.
CAUTION:
If the by-pass valve is not installed, commissioned and
maintained properly, according to the instructions contained in this
manual, it may not operate correctly and may endanger the user.
CAUTION:
Make sure that all the connecting pipework is water tight.
Leave this manual for the user.
Caleffi North America, Inc.
3883 West Milwaukee Road
Milwaukee, WI 53208
T: 414.238.2360 F: 414.238.2366
∆
p
(m w.g.)
1
2
0
G
(
m
3
/h)
(gpm)
∆
p
(m w.g.) (psi)
0
1
2
3
4
5
6
7
0
10
1
2
3
4
5
6
7
8
9
11
5
0
10
15
25
20
30
3
4
5
6
40
35
45
7
8
9
10
8
0
1
2
3
4
5
6
7
8
code 519700A -
519709A (1 1/4”)
1
2
3
4
5
6
Setting positions
∆
p
(m w.g.)
1
2
0
G
(
m
3
/h)
(gpm)
∆
p
(m w.g.) (psi)
0
1
2
3
4
5
6
7
0
10
1
2
3
4
5
6
7
8
9
11
5
0
10
15
25
20
30
3
4
5
6
40
35
7
8
9
8
0
1
2
3
4
5
6
7
8
code 519600A -
519609A (1”)
1
2
3
4
5
6
Setting positions
7-19
-18
·
Installation Tip
Scan to view
519 DPBV
