Roll upgrade services for board and paper machines

Upgrade services improve roll performance

Upgrade services provide improved roll performance and productivity by applying new innovations into your existing roll base. Valmet modular maintenance solutions such as upgrade services are especially targeted for critical process rolls e.g. deflection-compensated rolls and suction rolls in board and paper making. 

Benefits of upgrading an existing roll base:

• Improved machine runnability
• Improved machine efficiency
• Extended machine time
• Improved energy efficiency
• Improved safety

One example of upgrades is Suction Roll Upgrade Seal Flow. With Seal Flow, it is possible to achieve savings of up to 50% on the water used in the showers (calculated for 9 meter shell length).

Some of the latest suction roll innovations for added reliability, performance and energy efficiency:

Valmet Suction Roll Upgrade Lock Seal Reduced power consumption  Longer axial seal lifetime Longer shell lifetime
Valmet Suction Roll Upgrade Seal Flow Uniform seal lubrication Reduced water consumption Extended seal life
Valmet Suction Roll Upgrade Shell Flow H Cleaner shell through holes Maximum dewatering capacity Improved CD moisture profiles
Valmet Suction Roll Upgrade Edge Blow Less breaks Improved machine efficiency Cleaner shell edge areas
Valmet Suction Roll Upgrade Edge Light Fast and easy vacuum zone (CD & MD) positioning Improved energy efficiency Maximized dewatering
Suction roll upgrade for improved pickup Less breaks Improved runnability and tail threading