AS-2 & AS-3 (Metal), AT-1B (Teflon)
AS-2 type can be directly hooked-up to the tap water.
AS-2 and AS-3 suction air flow is Max. 13L/min. and can reach ultimate vacuum in short time.
AT-1B is Teflon made and strong against chemical corrosion.
| Model | AS-2 | AS-3 | AT-1B |
| Displacement | 13 L/min | 13 L/min | 6 L/min |
| Ultimate vacuum | – | – | 5°C 1.33 hPa (10 Torr) |
| 10°C 16 hPa (12 Torr) | 10°C 16 hPa (12 Torr) | 10°C 20 hPa (15 Torr) | |
| 15°C 26.6 hPa (20 Torr) | 15°C 26.6 hPa (20 Torr) | 15°C 33.3 hPa (25 Torr) | |
| Safety features | Check valve | Check valve | Check valve |
| Tap Diameter | ID 10 x OD 14 mm | ID 10 x OD 14 mm | – |
| Connection to tap | Adapter | R 1/4 with screw | R 1/4 with screa |
| Suction Dia. & Length | OD 9 mm , 180 mm | OD 9 mm, 140 mm | OD 10 mm, 68 mm |
