The lower is compatible with all Graco circulation pumps, providing an easy way to upgrade existing Graco pumps. Graco says this model has longer maintenance cycles and does not require throat seal liquid (TSL), which reduces maintenance costs and unplanned downtime. Common components also make the lower simpler to maintain and reduce inventory levels on repair parts.The lower is completely sealed, so it can be used for every pumping application in a mix room, including catalyzed coatings. It also contains the additional security of a backup seal in case of bellow leakage. “The completely sealed fluid section with bellows provides leak resistance for even the harshest materials,” said Bill Heuer, Graco’s Industrial Products division worldwide product marketing manager. “This redesign is a game-changer for fast-paced factories using moisture-sensitive materials.”In addition, the lower features Ultralife Series ceramic coating on its rods and cylinders. “The Ultralife Series ceramic coating is now an industry standard for handling the harshest materials,” said Heuer. “This includes waterborne paints.”The sealed 4-ball lower is available on all of Graco’s circulation pump assemblies and is compatible with the Bulldog, NXT, President, Viscount, E-Flo and E-Flo DC circulation pumps. An open wet cup version is also available, which has many of the same features as the sealed version.
