Butterfly valve
Ring format, nodular cast iron housing with EPDM liner and multiple shaft bearing.
The liner is also used to seal the flange. There is thus no contact between the medium and the valve housing. The valve has a swing-through disc (angle of rotation 360°). The position of the valve disc is indicated by a notch on the front of the shaft.
Sizing
∆Pv100 | = | Differential pressure across the fully open butterfly valve by a volume flow ⩒100 |
⩒100 | = | Volume flow through the fully open butterfly valve |
100 kPa | = | 1 bar ≈ 10 mWC |
1 m3/ h | = | 0.278 l/s water at 20 °C |
Flow characteristic
Flow kv / kvs |
|
| Angle of rotation [°] |
