2-port valves with flanged connections |
Replacement |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
Type |
DN |
Adapter |
Stem coupling 1) |
Product number |
DN |
|||||
VVF21.. |
- |
- |
- |
- |
- |
25...80 |
- |
- |
VVF22.. |
25...80 |
VVF21.. |
- |
- |
- |
- |
- |
100 |
- |
4 178 5649 8 |
VVF22.. |
100 |
VVF31.. |
kVS- Werte 1.6, 2.5, 3, 4, 5, 6.3, 10, 12, 16, 19, 25, 40, 63, 100 |
15...80 |
- |
- |
VVF32.. |
15...80 |
||||
VVF31.. |
kVS- Werte 31, 49, 78 |
VVF42.. |
||||||||
VVF31.. |
kVS- Werte 160, 250 |
100...150 |
- |
4 178 5649 8 |
VVF32.. |
100...150 |
||||
VVF31.. |
kVS- Werte 125, 200, 300, 315 |
VVF42.. |
||||||||
VVF40.. |
- |
- |
- |
- |
- |
15...80 |
- |
- |
VVF42.. |
15...80 |
VVF40.. |
- |
- |
- |
- |
- |
100...150 |
- |
4 178 5649 8 |
VVF42.. |
100...150 |
VVF41.49 |
VVF41.494 |
- |
- |
VVF41.495 |
- |
50 |
- |
- |
VVF53.50..2) |
50 |
VVF41.50 |
VVF41.504 |
VVF41.505 |
50 |
- |
- |
VVF53.50.. |
50 |
|||
VVF41.. |
VVF41..4 |
VVF41..5 |
65...150 |
- |
4 178 5649 8 |
VVF43.. |
65...150 |
|||
VVF45.49 |
VVF45.494 |
- |
- |
- |
- |
50 |
- |
4 178 5649 8 |
- |
- |
VVF45.50 |
VVF45.504 |
50 |
- |
4 178 5649 8 |
VVF53.50 |
50 |
||||
VVF45.. |
VVF45..4 |
65...150 |
- |
4 178 5649 8 |
VVF43.. 3) |
65...150 |
||||
VVF52.. |
VVF52..A |
VVF52..G |
- |
VVF52..M |
- |
15...40 |
- |
- |
VVF53.. |
15...40 |
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) If differential pressures are high, VVF43..K can be used as a replacement
Note
When using valves of the V..F43.. or V..F53.. lines with a stem heating element and a medium temperature of 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).
Note
Valve line VVF45..
Valves of the VVF45.. line close with the pressure, which means that when used in combination with SKB.. or SKC.. actuators, very high closing pressures are permitted. If such closing pressures are indeed required, valves of the VVF43..K line should be used as a replacement
Note
Valve line VVF31.. from DN50
The follow-on series VVF32 supports only select kVS values. For smaller kVS values, it makes more sense to replace the VVF31.. valve with series VVF42..valves. The kVS values for services VVF42.. must support the kvs value for VVF31 valves.
The valves series VVF31 and VVF42 are identical regarding face-to-face dimension, flange bolt circle and flange bolt dimensions.