Aftermarket GRACO® 178938 Ball Stop Pin, intake (Non-OEM)

Manufacturer: Total Finishing Supplies

Part Number: 536814

Comparable OEM Part Number: 178938

Description: Total Finishing's part # 19-1289 is a compatible replacement for GRACO® parts 178938 and 178-938, a ball stop pin 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® EM 590, GRACO® Fuller OBrien Pro 701, GRACO® GM 3500, GRACO® LineLazer 3500, GRACO® LoPro 1000, GRACO® Super Nova 700 and other compatible 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.

Comparable to GRACO® 178-938