Stationary Syphons

With more than 6,000 cantilever stationary syphons installed, Johnson is the preferred supplier and global leader in stationary syphon technology. Stationary syphons are preferred for most medium and high speed applications because stationary syphon differential pressure requirements do not increase with speed, as is the case with nearly all rotary syphons. This gives stationary syphons a great advantage in operating efficiency.

The locking mechanism in the joint housing secures the horizontal support tube in place to resist lateral loading while the vertical support provides rigid support to the vertical leg to minimize vibration and deflection. To design out the weak spots, Johnson analyzes the natural frequency of each syphon design and the rolls on the paper machine to prevent large amplitude vibrations.

To optimize heat transfer and consistency of the cross-machine temperature profile, the cantilever stationary syphon is generally used with Turbulator Bars which ensure the highest level of heat transfer through the shell.

Applications for stationary syphons are found with nearly all machines operating at speeds above 1500 fpm (500 mpm). Johnson has designed high speed cantilever stationary syphons for both open gear and enclosed gear machines.

Johnson Corporation, 805 Wood Street, Three Rivers, MI 49093. Tel: 616-278-1715; Fax: 616-279-5980.