They prevent the accumulation of air masses inside the pipes under pressure, as well as serve as a lung when it comes to sucking in the air at the moment of emptying the pipes, avoiding the crushing of the pipe due to the creation of a vacuum.
Double effect
| REFERENCIA | DESCRIPCIÓN | PESO NETO (KG) | VOLUMEN (M3) | PESO BRUTO (KG) | UDS. CAJA |
| 1017001 | VENTOSA DOBLE EFECTO PPFV 1/2" | 0.284 | 0.02244 | 6.17 | 20 |
| 1017002 | VENTOSA NET DOBLE EFECTO E/CINÉTICO 3/4" (PPFV) | 0.289 | 0.02244 | 6.27 | 20 |
| 1017003 | VENTOSA NET E/CINÉTICO 1" (PPFV) | 0.283 | 0.02244 | 6.15 | 20 |
Double Echo Effect
| REFERENCIA | DESCRIPCIÓN | PESO NETO (KG) | VOLUMEN (M3) | PESO BRUTO (KG) | UDS. CAJA |
| 1017512 | VENTOSA DOBLE EFECTO "ECO" 3/4" | 0.089 | 0.01553 | 3.18 | 32 |
| 1017513 | VENTOSA DOBLE EFECTO "ECO" 1" | 0.099 | 0.01553 | 3.48 | 32 |