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Idiomas disponibles
Idiomas disponibles
GAS FLOW
3
Q [m
/h, d=0,6]
8
Low Power
Class B
Class A
7
6
5
4
3
2
1
0 1 2 3 4 5 6 7 8 9 10 11 12
Pu [mbar]
Q=[m 3 /h d=0,6 Class B]
3
Q = [m
/h d=0,6 Classe B]
9
8
7
6
2
5
4
3
1
2
1
0
6 7 8 9 10 11 12 13 14 15 16 17 18
Pu [mbar]
Pu [mbar]
MODULATING CHARACTERISTIC CURVES
Modulating device in horizontal position
Outlet pressure Pu [mbar]
20
15
10
5
0
0
50
100
150
Current [mA]
Range 2 - 20 mbar
INSTALLATION
The SIT 837 TANDEM control valve complies with current safety standards.
Nevertheless, its installation on appliances must be verified in accordance with the specific standards for each
installation. In particular, it is necessary to ensure that requirements relating to the number and class of the automatic
shut-off valves and to the class of the pressure regulator are met. All the installation, setting and adjustment operations
must be carried out exclusively by qualified personnel on the basis of the specific characteristics of the appliance. The
valve is designed exclusively for installation inside gas appliances and is not suitable for outdoor use.
I Family (d=0.45)
Q =
II Family (d=0.6)
Q =
III Family (d=1.7)
Q =
Q=[m 3 / h d=0,6 Low Power - Class A]
3
Q = [m
/h d=0,6 Low Power - Classe A]
9
8
7
6
5
2
4
3
2
1
1
0
6 7 8 9 10 11 12 13 14 15 16 17 18
Pu [mbar]
Pu[mbar]
Outlet pressure Pu [mbar]
40
30
20
10
0
0
50
100
Current [mA]
Range 3 - 37 mbar
as a function of the pressure drop ∆p
Low Power
Class B
Class A
3
3
4,8 m
/h
4,0 m
/h
3
3
4,2 m
/h
3,6 m
/h
5,3 kg/h
4,6 kg/h
in a function to outlet pressure Pu,
according to EN 88
Inlet pressure range
Curve
Gas type
Nominal
1
2H
18
2
2L
25
Outlet pressure Pu [mbar]
50
40
30
20
10
0
150
0
50
Range 7 - 50 mbar
Flow Q
∆p = 5 mbar
∆p = 5 mbar
∆p = 5 mbar
Regulated flow Q
Max.
Min.
23
15
30
20
100
150
Current [mA]
5
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