Industrietechnik
VFD340-20 VFD3, 3-Way Control Valves with Internally Thread Union Connection, DN15–50
Valves, DN15-50, kvs 0.63-40, 20 mm stroke, intended for control of cold, hot and glycol-mixed water in heating, ventilation and domestic water systems. The valves are intended to be used together with Industrietechnik’s SE5... actuators. Valves with DN32-50 may also be used with SE10 if a larger actuating force is required.
Specifications
| Connection | Internal G 1" 1/2 on union end |
|---|---|
| Actuator connection | Standard for RVAN5.../RVAN10... actuators |
| Rangeability | 100:1 |
| Nominal diameter | DN40 |
| Kvs | 16 m³/h |
| Max. diff. pressure | 300 kPa |
| Media temperature | -5…150 °C |
| Nipple | DZR brass CW511L |
| Cover lid | DZR brass CW511L |
| Valve Type | 3-Way |
| Application | Heating, Cooling, Ventilation |
|---|---|
| Pressure rating | PN16 |
| Connection types | BSP externally 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) |
| Stroke | 20 mm |
| Closing direction | When stem is pulled outward |
| Media temperature | -5…150 °C |
| Body | Gunmetal CC491K |
| Seat | Gunmetal CC491K |
| Plug | Gunmetal CC491K |
| Stem | Stainless steel 1.4305 |
| O-rings | EPDM |
| Stuffing box | Dezincification resistant brass CW511L |
| Nut | Galvanized malleable cast iron |
| Fitting seal | Novatec Premium 2, Nitrile bonded aramid fibre with graphite |
Software & documentation
Other documentation