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Control valve authority - Ask the flow control expert

When the term authority is used in connection with control valves, you might well think that it is some kind of organization or body that classifies or confirms a particular characteristic of a control valve. However, this is not the case since authority refers to the differential pressure across a valve.

7 Ways Valmet helps bridge the U.S. tissue industry’s growing skilled labor gap

On the whole, the U.S. labor market continues to struggle to find enough skilled workers to meet demand, and Manufacturing is one of the industries most affected by the shortage. With pandemic-related challenges and an estimated 22% of the existing skilled workforce retiring by 2025, it’s anticipated that 2.1 million U.S. manufacturing jobs could be vacant in 2030.

Overview and troubleshooting of size press threading system

This article presents an example multiple-device threading system, briefly describing each device, and then lists methods to troubleshoot the threading system.

On-machine grinding - evaluation, scheduling and process

On-machine grinding is cost- and time-efficient compared to dryer cylinder replacement or off-machine grinding, finishing and renewing cylinders for 40-50 percent less total cost and in less than half the time.

Sizer service case study – Size press inspection and repair

A size press in a U.S. mill had a history of not closing evenly, causing wrinkles as the nip closed and potentially causing sheet breaks. Valmet came to help…

Power and heating plant training increase profitability

Valmet offers training tools to cover all aspects of the plant, ranging from classroom style to web-based E-learning, with solutions tailor-made for your mill.

Spreader roll reconditioning and upgrades optimize performance

Valmet spreader roll reconditioning service leads to a clear increase in service intervals and cuts overall maintenance costs. In addition to keeping spreader rolls in excellent condition, the spreader roll service ensures optimized roll performance, improved end product quality and reliable, wrinkle-free runs.

Hydraulic problems and their resolutions, actual examples

The following are real life examples of hydraulic problems Valmet Field Service experts found in the field and rectified during their visit.

Common reel problem situations, causes, defects and remedies

Faults or variations in the moisture content or thickness profile, paper filler variations, coating defects, and strong calendering may cause problems on the reel. This article reviews some common reel defects, their symptoms, causes and possible remedies.

Burning NCGs in recovery boilers makes pulp mills odorless

NCG (non-condensable gases) are composed of mostly sulfur gases and methanol. In large concentrations they can be toxic. NCGs can be collected and disposed of using the recovery boiler in a safe and reliable way.