Graco 100064 Ball

Graco 100064 Ball — Function & Compatibility

Compatible Machines

Based on Graco manuals and reputable parts listings, Graco 100064 Ball is used in the check/valve sections of the following Graco equipment families. Always confirm against your unit’s parts diagram or serial-specific manual before ordering.

• Hydra-Cat® proportioning pumps (plural-component proportioners and related pump checks). Verified by Hydra-Cat parts references listing #100064 as the updated ball for the Hydra-Cat seat.
• Severe-Duty Displacement Pumps (intake/check valve assemblies using a 5/8 in. ball). Listed as “BALL; 5/8 in. dia.” in the Graco Severe-Duty pump parts list.

Quick Specs

Product Overview

The Graco 100064 Ball is a precision sealing element used inside Graco pump and valve assemblies to regulate fluid flow and maintain a reliable seal in high-pressure spray systems. It is commonly found in plural-component equipment and severe-duty pumps where consistent check-valve performance is critical for even spray patterns and system longevity.

• Purpose: Creates a positive seal in the check/valve assembly to prevent backflow and stabilize output.
• Where Used: Graco plural-component proportioners and severe-duty displacement pump fluid sections (model-specific).
• Best Practice: Replace the seat/spring/seals together if wear is present; verify ball size and material for your exact assembly.

Frequently Asked Questions