Wet end

Valmet’s pulp drying technology is based on the experience gained in manufacturing and deliveries of more than 300 machines to customers worldwide.

These include the world’s widest pulp drying machine so far with a trim width of 10 meters and a record capacity of 5000 ADMT/D. The latest machine design allows for production rates per width meter of 500 ADMT/D and minimized energy consumption.

To meet our customers’ specific needs, Valmet’s wet end technology comprises both Fourdrinier type solutions and Gap technology with two-sided dewatering and wire pressing.

In the Gap Former, web formation takes place in a fully controlled, adjustable former section. Effective dewatering also allows for a shorter former length.

The Fourdrinier type wet end provides extreme flexibility for varying production rates, basis weights and pulp qualities, thanks to the adjustable headbox slice. In addition, the Fourdrinier type features long wire lifetime and disturbance-free operation. For maximized dewatering the Fourdrinier can be furnished with a top former. Alternatively, the top former can be installed at a later stage when an increase in production becomes necessary.

In both wet end alternatives, the first open draw takes place at a dry content exceeding 40%, which guarantees running reliability especially with short fiber pulp. The roll nips are double-felted and the rolls are of rubber or composite-covered, ensuring long lifetime for wires and felts. The embedded automation solutions feature wet end web profile control systems for process optimization. This maximizes the runnability and pulp web quality of the pulp drying machine. And, it minimizes web breaks and MD basis weight variations while protecting the wires and headbox.

Our machine screens are equipped with a new type of Nimax basket for low-consistency screening applications, based on patented manufacturing technology.

Machine screening

  • 534 references worldwide + reject screens
  • The widest range of screens on the market
  • Vertical and horizontal designs
  • Extensive process knowledge and support
  • Local service available worldwide


Wet end - Process and automation upgrades

Trim Eater

Energy saving product for wet end trim handling.

Wet End Tail Threading

At wet end during the years the tail threading from wire section through press section has been totally manual by machine operator. To make it happen at the same time ensuring high human safety, it has been a challenge.

Dilution Profile Control for Pulp Headboxes

A cost-effective way of modernizing an existing slice lip controlled headbox into a dilution controlled headbox.

Headbox Level Control System

Suitable for different types and sizes of headboxes.

Pressurized Felt Conditioning

Effective and energy saving felt dewatering solution.

Vacuum Optimization

Optimizing Pulp Drying machine wet end vacuum pump capacity.


Reduce sheet breaks at first nip.


Provides early warning of shoe press belt failure.


Pulp drying - Production consumables

FlexSeal - Suction roll stripes

A cost-efficient suction roll seal strip that delivers premium quality and performance.

Screen Basket NS

Especially designed for pulp drying, mechanical pulping and stock preparation screening applications. Screen Basket NS ensures targeted pulp quality and high screening capacity in all operating consistencies.


Spare parts and components

Beloit fabric guides

The reliable controlled travel of paper, board and tissue machine fabrics is based on dependable fabric guides.

Spare part service kits for Baling

Further value to the Shutdown planning.

Cutting arm with replacable cutting edge

Prolongs the service life by at least four times.




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