The RKV Needle valve is the right valve to use whenever pressure heads or flow rates need to be safely and reliably reduced and controlled.They are used for two main tasks :
- By restricting the cross-section, a change in flow rate, flow velocity and pressure is forced, which results in higher stress in the valve.The valve must therefore be designed so that potential cavitation cannot cause any damage whatsoever.
- To be able to control the pressure and flow precisely and finely, the control valve’s control characteristics must be as linear as possible over the whole operating range.
Applications :
- Water transport and distribution
- Dams and hydropower
- Industrial water applications
- Seawge network and treatment
- Air regulkation (ie : activated sludge treatment plant).
Product benefits :
- Low head loss.
- Noise-free energy dissipation for any hydraulic condition.
- Stability of internal mechanism ensured by special brass guide rails. No vibration.
- Extremely precise, linear control, cavitation control over 100% of stroke.
- High-quality materials, stainless steel internal mechanism.
Range :
- DN 100 to 2000
- PFA 10 to 40
- Higher working pressure availabloe on request, in class 900 (PN160) according to DN.
Technical data :
- Flange drilling ISO PN according to PFA (EN 1092-2 et ISO 7005-2 standards)
- Working temperature : +0 °C to +70 °C
- 100% watertight at zero flow
- Complies with NF EN 1074-4 standard
- Speed : up to 7 m/s.
- Wide range of cylinders for the dissipation of energy (custom-made or standard).
- Profiled seat or vanned ring to concentrate cavitation in the fluid stream.
Norms and certifications :
- ACS
- DVGW on components
Alternatives and options :
- Various coatings
- Duplex internal material
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