Industrietechnik
VFBF250-40 VFBF2/VFBF3 - 2- and 3-way control valves
Valves, DN15-50, kvs 0.63-40, 20 mm stroke, designed for control of hot, cold or glycol-mixed water in heating and ventilation systems. The valves are intended for use together with Industrietechnik’s SE5…/SE10… actuators.
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Specifications
| Connection | G2" |
|---|---|
| Actuator connection | Standard for RVAN5.../RVAN10... actuators |
| Rangeability | 100:1 |
| Stroke | 20 mm |
| Nominal diameter | DN50 |
| Kvs | 40 m³/h |
| Max. diff. pressure | 200 kPa |
| Media temperature | -5…140 °C |
| Way | 2 |
| Application | Heating, Cooling, Ventilation |
|---|---|
| Pressure rating | PN16 |
| Connection types | BSP internally threaded according to ISO 228/1 |
| Flow characteristics | Equal percentage |
| Leakage | 0.1 % of Kvs () |
| Media | Hot water, Cold water, Glycol-mixed water (max. 50 % glycol) |
| Closing direction | When stem is pulled outward |
| Max. diff. pressure | 1600 kPa |
| Media temperature | -5…140 °C |
| Body | Brass CW614N |
| Seat | Brass CW614N |
| Plug | Brass CW617N |
| Stem | Stainless steel 1.4305 |
| O-rings | EPDM |
| Stuffing box | Brass CW614N |