The direct-acting proportional valve Type 2871 is used as the regulating unit in control loops. Due to an elastomeric seat seal the valve closes tight (integrated shut-off function),up to the DN specific nominal pressure. The plunger of the valve is assembled frictionless, which leads to an extraordinary adjustment characteristic. This valve is particularly suitable for demanding control tasks (high control range, dry gases, etc.).
| Seal | FKM, EPDM |
| Body | Brass, stainless steel |
| Hysteresis | < 5 % |
| Repeat accuracy | < 0.25 % FS |
| Response sensitivity | < 0.25 % FS |
| Setting range | 1:200: DN 0.8…2 |
| Pressure range | 0…12 bar (also applicable for technical vacuum) |
| Duty cycle | 100 % continuous operation |
| Operating voltage | 24 V DC (12 V on request) |
| Power consumption | Max. 5 W |
| Maximum coil current | 220 mA (at 5 W and 24 V coil) |
| PWM frequency | 1500 Hz |
| Medium temperature | - 10 °C…+ 90 °C (with FKM) |
| Viscosity | Max. 21 mm2/s (21 cSt) |
| Electrical connection | Cable plug Type 2507 , form B according to industry standard |
| MOQ | 1 |