EB 3135-1 EN
17
Design and principle of operation
Table 1:
Technical data · Valve · All pressures in bar (gauge)
Valve size DN
15/20/25
15
20
25
K
VS
coefficient
Body with screwed
ends
0.4
1)
1
1)
2.5
4
1)
6.3
8
x
FZ
value
0.6
Pressure rating
PN 16/PN 25
Max. permissible differential pressure
∆p across the valve
10 bar
3)
/20 bar
Max. permissible temperature
For liquids 130 °C (PN 16)/150 °C
6)
(PN 25)
For air and non-flammable gases 80 °C
Conformity
·
Flow rate set point ranges for water in m³/h
Flow rate set point range/limitation
for water with a differential pressure
at the restriction of 0.2 bar
0.03 to
0.2
0.12 to
0.64
0.2 to
1.2
0.6 to 1.3
4)
0.6 to 2.5
0.8 to 2.3
4)
0.8 to 3.6
0.8 to 3.5
4)
0.8 to 4.2
5)
Valve size DN
32
40
50
K
VS
coefficient
Body with screwed
ends
12.5
16
20
Flanged valve body
2)
12.5
20
25
x
FZ
value
Body with screwed
ends
0.5
0.45
Flanged valve body
2)
0.45
0.4
Pressure rating
PN 25
Max. permissible differential pressure
∆p across the valve
20 bar
16 bar
Max. permissible temperature
For liquids 130 °C (PN 16)/150 °C
6)
(PN 25)
For air and non-flammable gases 80 °C
Conformity
·
Flow rate set point ranges for water in m³/h
Flow rate set point range/limitation for
water with a differential pressure at
the restriction of 0.2 bar
2 to 5.8
4)
2 to 10
3 to 9.1
4)
3 to 12.5
4 to 14.1
4)
4 to 15
1)
Special version
2)
Body: spheroidal graphite iron EN-GJS-400-18-LT
3)
For PN 16 version
4)
An increase in noise level can be expected when the specified flow rates are exceeded, even if cavitation does not
occur.
5)
5 m³/h with a differential pressure at the restriction of 0.3 bar (special version)
6)
With intermediate insulating piece (item no. 1992-3132)
