PERFORMANCE BULLETIN 0638 7000 Threaded Base Change
As of May 25, 2012, we have added ribs to the Fleck 7000 threaded base. This change is intended to improve strength and does not affect flow performance. Click here for a PDF of this bulletin.
NEW FLECK 7000 base WITH Stiffening Ribs
OLD FLECK 7000 WITHOUT Stiffening Ribs