Graco 804415 Piston

The Graco 804415 Piston is a precision-engineered internal pump component used in selected Graco industrial piston pump systems. It plays a vital role in maintaining consistent pumping pressure and efficient fluid movement inside the pump assembly.

This replacement piston is commonly installed in the lower pump section where it moves up and down to transfer coatings, paints, and other industrial fluids through the system.

Compatible Machines

• Graco industrial piston pump systems
• Selected Graco air-operated fluid transfer pumps
• Compatible Graco pump lower assemblies using piston model 804415
• Graco coating and paint circulation pumping systems

Product Overview

The Graco 804415 Piston is designed to operate inside the pump lower assembly where it converts mechanical motion into hydraulic pressure. During operation, the piston moves within the pump cylinder to draw material in and force it through the system at controlled pressure.

A properly functioning pump piston ensures smooth fluid delivery, stable pressure, and reliable spraying or transfer performance. Over time, wear on internal pump components can reduce efficiency, making timely replacement essential for maintaining system performance.

Key Features

• Original Graco replacement piston
• Designed for industrial fluid pumping systems
• Supports consistent pump pressure and flow
• Precision-machined for reliable sealing and movement
• Helps maintain efficient spray or transfer performance

Typical Applications

• Industrial paint circulation systems
• Protective coating applications
• Sealant and adhesive transfer systems
• Manufacturing fluid transfer equipment

Product Details

Frequently Asked Questions