Basis Weight Valves

The basis weight valve is one of the most important valves in a paper machine.
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What is a basis weight valve needed for?

The basis weight valve is one of the most important valves in a paper machine. A valve with proper valve characteristic, and an actuator with a high resolution, is required to produce paper with the right grammage (mass per unit area) within a narrow tolerance range.

Basis weight valves in paper machines

The paper grammage is continuously measured during operation of the paper machine. This is done with a ball segment valve equipped with an electrical actuator. The actuator has a high resolution. The stock flowing through the valve and its consistency is accurately controlled and with dilution in the short circulation and control of the wire speed, the desired basis weight of the paper is obtained.