Product No.

Stock Number

DN

Kvs

Leakage rate

Velocity of flow 1) water

[m/s]

[m3/h]

in % of Kvs value

SAL31..T10/F05

SAL81..T10/F05

SAL61..T10/F05

VFW41.40U

S55235-V168

DN40

40

0.05

4

2.5

VFW41.50U

S55235-V169

DN50

100

VFW41.65U

S55235-V170

DN65

155

VFW41.80U

S55235-V171

DN80

260

VFW41.100U

S55235-V172

DN100

520

VFW41.125U

S55235-V173

DN125

820

VFW41.150U

S55235-V174

DN150

1600

2.5

1.5

VFW41.200U

S55235-V175

DN200

4000

1)

Recommended maximum velocity of flow and the butterfly valve fully open

Kvs

Nominal flow rate of cold water (5…30 °C) through the fully open butterfly valve at a differential pressure of 100 kPa (1 bar)