| OLEVAB06 | Valv. Check 3/8" BSP 400/0,5 bar | 3/8" BSP | 400 | |
| OLEVAB08 | Valv. Check 1/2" BSP 400/0,5 bar | 1/2" BSP | 400 | |
| OLEVAB20 | Valv.Check 1 1/4" BSP 350/0,5 bar | 1 1/4" BSP | 350 | |
| OLEVAB24 | Valv. Check 1 1/2" BSP 350/0,5 bar | 1 1/2" BSP | 350 | |
| OLEVAN04 | Valv. Check 1/4" NPT 400/0,5 bar | 1/4" NPT | 400 | |
| OLEVAN06 | Valv. Check 3/8" NPT 400/0,5 bar | 3/8" NPT | 400 | |
| OLEVAN08 | Valv. Check 1/2" NPT 400/0,5 bar | 1/2" NPT | 400 | |
| OLEVAN12 | Valv. Check 3/4" NPT 400/0,5 bar | 3/4" NPT | 400 | |
| OLEVAN16 | Valv. Check 1" NPT 350/0,5 bar | 1" NPT | 350 | |
| OLEVAN20 | Valv. Check 1.1/4" NPT 350/0,5 bar | 1.1/4" NPT | 350 | |
| OLEVAN24 | Valv. Check 1.1/2" NPT 350/0,5 bar | 1.1/2" NPT | 350 | |
| OLEVAN32 | Valv. Check 2" NPT 350/0,5 bar | 2" NPT | 350 | |