16
EB 3009 EN
Technical data
10 Technical data
Type 2421 RS Valve
Valve size
NPS
½
¾
1
–
1½
2
2½
3
4
–
6
8
10
DN
15 20 25 32 40 50 65 80 100 125 150 200 250
C
V
and K
VS
coefficient
C
V
4.5 7.5 9.4
–
37 37 60 94 145
–
330 490
585
K
VS
4
6.3
8
16 20 32 50 80 125 125 280 420 500
Pressure rating
Class 150 or 300/PN 25 or 40
Max. constant operating
pressure
360 psi/25 bar
Max. perm. pressure acting
on one side
650 psi/45 bar
Leakage class
1)
according
to IEC 60534-4 (ANSI/
FCI 70-2)
Leakage class VI
Max. permissible
temperature
With EPDM diaphragm in
actuator
175 °F/80 °C for air, gases and water
430 °F/220 °C for steam with compensation chamber
With FKM diaphragm in
actuator
300 °F/150 °C for air and gases
Compliance
Type 2420 RS Actuator
Actuator area
50 in²/320 cm²
100 in²/640 cm²
Fixed differential pressure
set point Δp
NPS ½ to 6/DN 15 to 150
3 psi/0.2 bar
NPS 8 and 10/DN 200
and 250
5 psi/0.3 bar
Max. permissible
temperature
With EPDM diaphragm
175 °F/80 °C for air, gases and water
430 °F/220 °C for steam with compensation chamber
With FKM diaphragm
300 °F/150 °C for air and gases
Compliance
1)
Terms for control valve sizing according to IEC 60534 (ANSI/FCI 70-2): F
L
= 0.95, X
T
= 0.75
