Graco 504461 Piston Ball Check

The Graco 504461 Piston Ball Check is a genuine replacement part designed to control one-way fluid flow inside Graco pump assemblies, helping maintain steady pressure and reliable spray performance.

Prevents back-flow inside the pump system
Supports consistent pressure and smooth pump operation
Ideal for restoring worn or leaking piston check assemblies
Original Graco part for dependable fit and function

$92.88

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Description

Compatible Machines

Graco airless paint sprayers using piston pump check-valve assemblies
Graco fluid pumps and pressure pump systems requiring a piston ball check
Graco coating and fluid-handling units where back-flow prevention is critical

Product Overview

The Graco 504461 Piston Ball Check is a genuine replacement component designed to control one-way fluid flow inside Graco pump assemblies. It plays a vital role in maintaining consistent pressure by preventing material from flowing backward during operation.

By ensuring proper sealing and smooth piston movement, this part helps restore spray consistency, improves pump efficiency, and reduces pressure loss caused by worn or damaged check components.

Key Functions

Allows fluid to move in a single direction through the pump
Prevents back-flow that can cause pressure fluctuation
Supports consistent spray performance and pump priming
Ideal for maintenance and repair of worn piston check assemblies

Technical Summary

Part Number	504461
Part Type	Piston Ball Check
Function	One-way fluid flow control
Brand	Graco

Frequently Asked Questions

It allows fluid to flow forward through the pump while sealing against reverse flow, helping maintain steady pressure and proper pump operation.

Replacement is recommended if you notice pressure loss, inconsistent spray patterns, difficulty priming, or visible wear on the existing check components.

Yes, this is a genuine Graco replacement part designed to meet original equipment specifications.