TEADIT® 2005 – Harsh Chemical Agitator CASE HISTORY

A major chemical processing customer was experiencing media leakage of harsh chemicals from packing on some of their agitators. Large diameter agitators such as this can pose many challenges for braided packing sets. This type of equipment often suffers from shaft alignment issues as well as worn or damaged shafts which can be difficult scenarios for braided packing to be successful in. This specific application posed another challenge in the form of the packing configuration being utilized in the equipment. Previously the customer had been utilizing a packing configuration consisting of 10 rings of PTFE packing. A configuration with a high amount of packing rings such as this can lead to an insufficient amount of load being applied to each ring. In packing sets the load / stress applied is greater at the rings closest to the gland follower and will decrease for each ring further away from the top ring.