The direct-acting Type 3280 motor valve is suitable for dosing liquids and gases in closed or open control loops. The valve is driven by a linear stepper motor. The integrated electronics assembly simplifies the process integration; additional actuation modules are not necessary. The engine does not need any energy to maintain a certain valve opening. This feature can reduce the energy consumption of a plant dramatically and therefore make it more efficient. Type 3280 is available as an on/off valve or proportional valve by default, as a variant with integrated positioner, and as a variant with integrated process controller.
| Seal | NBR for liquids |
| Valve body | Brass, stainless steel |
| Orifice | DN 8…DN 15, NPS ¼, ⅜, ½ |
| Flow direction | Against closing direction (below seat) |
| Weight | ~0.7 kg |
| Status display | LED (Refer to the operating instructions Type 3280 for more information.) |
| Dead band of the position control | ± 0.5 % (corresponds to setting range 1:100) |
| Closing time | 2.5 s |
| Operating pressure | 0…6 bar(g) |
| Duty cycle | Up to 100 % (depending on medium and ambient temperature) |
| KVS value | 0.03…1.9 m³/h |
| Operating voltage | 24 V DC ± 10 % (max. residual ripple 10 %) |
| Power consumption | < 1 W in holding position |
| Medium temperature | EPDM (seal material): - 30 °C…+ 70 °C |
| Viscosity | Max. 600 mm²/s (cSt) |
| MOQ | 1 |