In this type, the air nozzle hole is set under a leaf with carbide ball on its measuring point. The carbide ball directly contact the product surface and the air is not directly released into the product.
LV Type:
| Nominal Size D exceeded ~ less | A | B | L |
| 4 exceeded 10 or less | 38 | 47 | 90 |
| 10 exceeded 14 or less | 42 | 50 | 90 |
| 14 exceeded 24 or less | D+30 | 68 | 90 |
| 24 exceeded 40 or less | D+30 | 73 | 90 |
| 40 exceeded 55 or less | D+30 | 73 | 90 |
| 55 exceeded 70 or less | D+30 | 76 | 110 |
