Description
The Bedford 9-128 is a compatible replacement for Graco parts 101-178 and 101178, a ball for Graco spray equipment. This ball is the moving element of a check valve in the pump’s fluid section: on each stroke it lifts off its seat to let coating through, then reseats to hold pressure. Compatible with Graco 1.5:1 Monark, 10:1 President, 2:1 Monark, 22:1 Senator, 3:1 President, 30:1 Bulldog and other Graco equipment.
Common reasons for replacement:
- Pitting or scoring from abrasive coatings
- Replaced together with its seat during a fluid-section rebuild
- Sprayer loses prime or pressure as the ball wears out-of-round
- Fluid backflow from a ball that no longer seats cleanly
Manufactured to OEM-equivalent dimensions for proper fit and performance.









