Insert, For Top of Drain Shaft on the ABI 3900 or Northwwest instrument. This item pushes the check valve ball up during drain to open the drain check valve. This is a item that is pressed into the drain shaft. To change it, the old one must be removed with a press and the new item pressed in. If you bend the new item while pressing it in, we do not warranty it. Changing this item should not be attempted unless you are familliar with using a press.

This part is obsolete. Please see replacement part number 262-104376