- the position of application in the paper machine
- the choice of the best material
- the width of the paper machine
De Iuliis regulators can be symmetrical or asymmetrical (to allow assembly of the doctor on the regulation roll), in stainless steel (for fourdrinier machines or press section) or in carbon steel (for the dry end). The latter can be of standard type (for temperatures up to 110° C) and for high temperatures (up to 150°C).
For any of the above it is possible to insert a mechanical misalignment device of the regulator roll which, by means of a screw-jack, also gives a measurement of the fixed roll misalignment.
The misalignment device can be installed separately - from the tender side - or integrated into the regulator, making up a whole piece; in the latter case it clearly offers an advantage to have the pneumatic actuator on the tender side, thereby simplifying maintenance.
The misalignment regulation can be manual or motorized and the measure of the misalignment can be visual or by remote control for those sections of the machine which are not easily accessible.
De Iuliis produces two different sizes for each type of regulator:
- for rolls up to 3.5m wide
- for rolls from 3.5m to 6m wide