5
172-65443A-01 (CV-COS) 17 Nov 2014
Air Supply Pressure
Size
Pressure Supplied
to Filter Regulator
Air Pressure Supplied to
Positioner
Air Pressure Supplied to
Actuator
(Spring Range)
15–50 mm
(
1
/
2
- 2 in)
0.40 – 0.60 MPaG
(55 – 85 psig)
0.38 MPaG
(54 psig)
0.21 – 0.33 MPaG
(30 – 48 psig)
(1 MPa = 10.197 kg/cm
2
)
Valve
Size mm (in)
15 (
1
/
2
)
20 (
3
/
4
)
25 (1)
40 (1
1
/
2
)
50 (2)
Maximum Operating
Pressure (PMO)
Maximum Operating
Temperature (TMO)
See nameplate
Applicable Fluid
Steam
Valve Plug & Stem/
Valve Seat Material
Stainless steel
Valve Characteristic
Equal percentage
Stroke (Travel)
15 mm (
9
/
16
in)
Rangeability 50:1
Cv
(US)
3.5 6.0 9.0 27 40
Cv
(UK)
2.9 5.0 7.5 23 33
Cv and Kvs
Values
Kvs
(DIN)
3.0 5.1 7.7 23 34
Valve Leakage Rate
(Leak Rate Class)
Less than 0.01% of the rated Cv and Kvs value
(IEC/ANSI/EN Class IV)
(1 MPa = 10.197 kg/cm
2
)
