Graco 158359 Air Valve Actuator

Graco 158359 Air Valve Actuator Overview

The Graco 158359 Air Valve Actuator is a genuine OEM replacement part designed for the air motor section of Graco pneumatic pumps. It regulates the flow of compressed air that drives the pump piston, ensuring efficient and reliable operation of your pump system.

Compatible Machines

This actuator fits specific Graco Fire-Ball 425 Series 75:1 air-powered grease pumps models:

• 239729 – Fire-Ball 425, 120-lb (55 kg) drum version
• 239730 – Fire-Ball 425, 400-lb (180 kg) drum version
• 239731 – Fire-Ball 425, Stubby version

Key Features

• OEM Quality: Manufactured by Graco for precise fit and reliable performance.
• Critical Function: Controls air transfer in the motor for smooth cycling of the pump piston.
• Durable Construction: Built for long service life under demanding industrial use.
• Easy Replacement: Direct fit for the listed Fire-Ball 425 Series pumps.

Technical Details

Installation & Tips

• Always verify your pump model and serial number before ordering.
• Ensure the air supply is clean, dry, and regulated to avoid actuator damage.
• Use only genuine Graco parts for safety and performance assurance.
• Check related seals and grommets if the air motor shows erratic operation.

Frequently Asked Questions