Features
Manual opening and closing with one touch- Sealing is secure because of the disc seal.
- It is motor drive.
- It operates with dry batteries (12V, 24V) during power failure.
- Large conductance
- Shaft seal is long life.
- It is compact. (Small installation space)
- Manual and automatic can be easily exchanged.(Compatible)
- It can also be used for reverse pressure.
Specifications
| Applicable pressure | Atmospheric pressure～10⁻⁵Pa |
| Leak volume | 10⁻⁸ Pa · m³ / sec |
| Reverse pressure (Differential pressure) | 1×105Pa |
| Body material | SUS304(SCS13) |
| Manual type / opening and closing method | 1 to 4 inch One-touch method 6 to 10 inch Worm gear driven method |
| Flange | Vacuum flange JISB-2290 without groove |
Dimension table
| Model | A | B | C | D | E | F | G | H | I | J | K | L | M | N | P | Q | R | S |
| BM-2 | 50 | 65 | 100 | 120 | 20 | 55 | 62 | 50 | 65 | – | – | – | 2×4-M8 | 65 | 52.9 | 7 | – | 60 |
| BM-3 | 75 | 97 | 135 | 160 | 20 | 55 | 85 | 115 | 110 | – | – | – | 2×4-M10 | 97 | 80.7 | 10 | – | 85 |
| BM-4 | 96 | 115 | 160 | 185 | 18 | 55 | 95 | 115 | 110 | – | – | – | 2×8-M10 | 115 | 105.3 | 7 | – | 105 |
| BM-6 | 142 | 170 | 210 | 235 | 20 | 75 | 120 | 90 | 30 | 115 | 50 | 180 | 2×8-M10 | 170 | 155.2 | 15 | – | 153 |
| BM-8 | 195 | 215 | 270 | 300 | 40 | 102 | 175 | 120 | 45 | 160 | 50 | 220 | 2×8-M12 | 206 | 204.7 | 12 | 172 | 209 |
| BM-10 | 246 | 270 | 320 | 350 | 40 | 109 | 200 | 175 | 79.5 | 250 | 55 | 285 | 2×12-M12 | 270 | 254.2 | 15 | 197 | 260 |
(Note) N and Q are clearance dimensions when the disc rotates.
Remarks
Ayumi Industry’s butterfly valve uses a disc seal method (pressing method) that opens and closes with double motion, so it boasts absolute reliability and provides simplicity and reliability in operation.
When using a combination of an electric butterfly valve and our solenoid vacuum valve AL series or vacuum three-way valve PT series, complete automatic control can be performed only with electricity.
■Application
- For high vacuum system
- For low vacuum system
- For general vacuum equipment