The AVB is an air operated valve for high vacuum with molded bellows. The basic AVB□17 is an NC type with orifice diameters from ø17 to ø80 and ports from NW16 to NW80.
| Model | AVB217 / AVB317 / AVB417 / AVB517 / AVB617 / AVB717 |
| Working Fluid | Vacuum and inert gas |
| Working Pressure | 1.3x10⁻⁶ to 1x10⁵ Pa (abs) |
| Max. Operating Pressure Differential | 0.1 MPa |
| Valve Seat Leakage | 1.3x10⁻¹⁰ Pa·m³/s (He) or less |
| External Leakage | 1.3x10⁻¹¹ Pa·m³/s (He) or less |
| Proof Pressure | 0.3 MPa |
| Fluid Temperature | 5 to 60 °C (high temperature specification 5 to 150 °C) |
| Ambient Operating Temperature | 0 to 60 °C (no freezing) |
| Orifice Diameter | ø17 / ø24 / ø39 / ø48 / ø68 / ø80 |
| Conductance | 5 / 13 / 43 / 74 / 166 / 242 L/s |
| Port Size | NW16 / NW25 / NW40 / NW50 / NW63 / NW80 |
| Operating Pressure (Pilot) | 0.4 to 0.6 MPa |
| Weight | 0.4 / 0.5 / 1.2 / 2.0 / 3.5 / 6.5 kg |
| Body Material | Aluminum alloy A6063 |