| co-ax type | orifice | connection | max. pressure range | Kv value | 
|---|---|---|---|---|
| FMX-2 | 10 mm | thread | 0 – 40 bar | 3,7 - 4,3 m³/h | 
| FMX-3 | 15 mm | thread | 0 – 40 bar | 8,5 - 10,5 m³/h | 
| FMX-4 | 20 mm | thread | 0 – 40 bar | 15,4 - 17,0 m³/h | 
| FMX-5 | 25 mm | thread | 0 – 40 bar | 23,7 - 24,6 m³/h |