3-port valves with flanged connections |
Replacement |
||||||||
|---|---|---|---|---|---|---|---|---|---|
Type |
DN |
Adapter |
Stem |
Product number |
DN |
||||
VXF21.. |
- |
- |
- |
- |
25...80 |
- |
- |
VXF22.. |
25...80 |
VXF21.. |
- |
- |
- |
- |
100 |
4 178 5649 8 |
VXF22.. |
100 |
|
VXF31.. |
kVS- Werte 1.6, 2.5, 3, 4, 5, 6.3, 10, 12, 16, 19, 25, 40, 63, 100 |
15...80 |
- |
- |
VXF32.. |
15...80 |
|||
VXF31.. |
kVS- Werte 31, 49, 78 |
VXF42.. |
|||||||
VXF31.. |
kVS- Werte 160, 250 |
100...150 |
- |
4 178 5649 8 |
VXF32.. |
100...150 |
|||
VXF31.. |
kVS- Werte 125, 200, 300, 315 |
VXF42.. |
|||||||
VXF40.. |
- |
- |
- |
- |
15...80 |
- |
- |
VXF42.. |
15...80 |
VXF40.. |
- |
- |
- |
- |
100...150 |
- |
4 178 5649 8 |
VXF42.. |
100...150 |
VXF41.. |
VXF41..4 |
- |
VXF41..5 |
- |
15 |
ALF41B15 |
- |
VXF53.. |
15 |
25 |
ALF41B25 |
- |
25 |
||||||
40 |
ALF41B40 |
- |
40 |
||||||
VXF41.49.. |
VXF41.494.. |
VXF41.495.. |
50 |
ALF41B50 |
- |
VXF53.50.. 2) |
50 |
||
VXF41.50.. |
VXF41.504.. |
VXF41.505.. |
ALF41B50 |
- |
VXF53.50.. |
||||
VXF41.. |
VXF41..4 |
VXF41..5 |
65 |
ALF41B65 |
4 178 5649 8 3) |
VXF43.. |
65 |
||
80 |
ALF41B80 |
4 178 5649 8 3) |
80 |
||||||
100 |
ALF41B100 |
4 178 5649 8 3) |
100 |
||||||
125 |
ALF41B125 |
4 178 5649 8 3) |
125 |
||||||
150 |
ALF41B150 |
4 178 5649 8 3) |
150 |
||||||
1) Since the new valves use uniform stem couplings, valves driven by electrohydraulic actuators SKC.. require a new stem coupling
2) Replacement valves are the same nominal size DN, but have different kvs values. This must be taken into consideration when replacing a valve in the plant (stability, active stroke range)
3) ALF41B65 .. 150 include the 10 mm stem washer to connect the existing SKC with the ne VXF43.. valves.
Note
When using valves of the V..F43.. or V..F53.. lines with a stem heating element and the medium temperature is below -5 °C, the stem sealing gland must be replaced. In that case, the sealing gland must be ordered also (stock number 4 284 8806 0).
Notes
When replacing old valves by new valves, the installation might have to be modified.
Valve lines VXF53../VXF43..
The dimension of the bypass is smaller than that of the valves of the former VXF41.. line. This means that a one-to-one replacement of the VXF41.. valves requires an ALF41B.. adapter. This adapter compensates for the difference in dimensions, thus facilitating replacement of the valve without having to modify the piping. The washer to fit the existing SKC actuator to the new valve with 10 mm stem diameter is added to the ALF41B65 to ..150.
Notes
Valve lines VXF31.. from DN50
The follow-on series VXF32 supports only select kVS values. For smaller kVS values, it makes more sense to replace the VXF31.. valve with series VXF42..valves. The kVS values for services VXF42.. must support the kvs value for VXF31 valves.
The valves series VXF31 and VXF42 are identical regarding face-to-face dimension, flange bolt circle and flange bolt dimensions.