The V-AXX® valve has the highest Kv / Cv of any comparable torque-seated, butterfly valves. How important higher Kv / Cv value? In new construction, when the higher Kv / Cv of the V-AXX® is considered, the size of the valve can be reduced, minimizing the cost of the valve. But that is just the start. It's lower torque (combination of smaller valve size, but also the completely friction free sealing design) allow for a smaller, less costly automation package. Then, with the smaller valve, the piping and the associated supports are also smaller and less costly. In new construction, something once thoght insignificant, Kv / Cv values, can have a huge impact on the total costs of the investment if You are able to use for example DN 350 instead of DN 500. With regards to day to day valve replacement where the pipe size and infrastructurehave already been determined, the higher flow coefficents with the V-AXX® valve, can improve process and lower pumping costs due to the lower pressure drop across the valve.

DN 50 80 100 125 150 200 250 300 350 400 450 500 600
Kv Max 39 125 273 443 693 1532 2598 3633 5427 7760 10585 12845 20408
Cv Max 45 145 316 512 801 1771 3003 4547 6274 8971 12237 14850 23593
Values for full rated ANSI 300 / PN 40 bidirectionally tight valve


The new ORCA® trim provides huge advantages against other solutions. Plates mounted on both sides of the disc allow the pressure to drop in several stages and prevent supersonic speed in gases and prevent the cavitation in liquids. One or more sets of plates can be mounted in accordance with the customer needs, allowing an excellent flow control when the valve is partially open.

Since the plates are mounted parallel to the disc and moved together with the disc, they do not interfere with the flow when the valve is fully open. This ensures the maximum Kv / Cv value remains as this of a standard valve.

  • Better flow control
  • No cavitation
  • No supersonic speed
  • Lower noise level.