LV9 Web Tension Control

The simple way to control your web tension.

KELVA LV9 consists of a pneumatic regulating valve with a cylinder arm or spring arm. The device is fitted to a round bar, with its roller against the reel of material. It registers reduction in the diameter of the reel and regulates the air pressure to a KELVA brake accordingly, so that web tension is held constant.

Contact us


  • Fully air operated
  • Explosion-proof
  • Choose between spring or cylinder arm
  • Available for rolls with up to Ø 1600mm
  • Reliable, inexpensive, and simple to install


  • Product name: KELVA  Web tension control (LV9)
  • Options: Cylinder or spring arm
  • Applications: The LV9 can be used for most materials, provided the diameter of the reel does not exceed 1600mm
  • Additional: Hand lever valve complete with air regulator and pressure gauge for cylinder arm configuration


Our experts will be happy to help you. Get in touch with us!