These Agilent Varian TriScroll pumps are sold rebuilt and come with a one year warranty. The warranty does not cover tip seal maintenance. For example, per OEM specs, scroll pump tip seals must be replaced every 8,000 hours, or slightly less than 11 months, to maintain good base pressure.
Agilent Varian calls their pump "tri" scroll because of the multistage design. Compare the ANEST IWATA dry pump page. For specifications or user manuals go to Agilent Varian for the PTS series TriScroll pumps. We also offer repair service.