Graco Ball Kits are used to replace theBall that is commonly used in tha air-operated double diaphragm transfer pumps. This kit is specifically intended to be used in the replacement of Balls in a 1" diaphragm pump. These Balls are what moves inside of the pump to enable the flow of fluid to either be enabled or restricted, in order to create a pressure difference that is needed to pump consistently and transfer materials such as Oil, Water, Anti-Freeze, and other dispensable fuels.

This Ball is certified to operate under a maximum air pressure of 125 PSI. 

This Ball is made of a Thermoplastic Elastomer (TPE) which is commonly substituted for Buna-N, and is known for its high level of abrasion resistance.