Advantage GPX 85 Gas Piston Pump

Advantage GPX 85 Gas Piston Pump Parts 

The Advantage GPX 85 Gas Piston Pump is a high-output airless sprayer built for professional contractors who require maximum performance, mobility, and durability on demanding job sites. To keep this sprayer operating at peak efficiency, AllTitanParts offers a complete range of OEM replacement parts organized into clear sub-categories for easy identification and ordering.

Whether you need to rebuild the main assembly, service the drive system, replace worn fluid section components, repair the cart assembly, or install a fresh 5-gallon siphon set, all parts are engineered for perfect fit and long service life. These genuine components help restore spraying performance, reduce downtime, and extend the overall lifespan of your GPX 85 sprayer.

Key Features 

• OEM-Quality Components
  All parts match the original factory specification for guaranteed compatibility and performance.
• Complete Sub-Category Coverage
  Includes Main Assembly, Drive Assembly, Fluid Section, Cart Assembly, Siphon Set, and Accessories.
• Durability for Heavy-Duty Jobs
  Built to withstand high pressure, continuous spraying, and tough environments.
• Easy Installation
  Parts are designed for simple servicing—reducing downtime and maintenance costs.
• Restores Pump Efficiency
  Ensures consistent pressure, smooth flow, and reliable spray patterns.
  
  

Applications

Replacement parts for the Advantage GPX 85 Gas Piston Pump are used to:

• Maintain peak sprayer efficiency during daily professional use.
• Restore worn or damaged components in high-pressure environments.
• Perform routine service, including fluid rebuilds and drive section maintenance.
• Keep the sprayer field-ready for residential, commercial, and industrial coatings.
• Support contractors who work outdoors, remotely, or on large-scale painting projects.
  
  

Overview 

1. GPX 85 Main Assembly Parts

Core structural and operational parts responsible for stability and daily function.

2. GPX 85 Drive Assembly Parts

Vital components that power the pump mechanism and control motion.

3. GPX 85 Fluid Section Assembly Parts

Includes pistons, seals, packings, valves major wear components for pressure and material flow.

4. GPX 85 Cart Assembly Parts

Frame, wheels, and handles for mobility and safe transport.

5. GPX 85 5-Gallon Siphon Set Parts

Pickup tube, hose, and inlet strainer for smooth coating extraction.

6. GPX 85 Accessories Parts

Additional parts such as filters, hose adaptors, fittings, and optional attachments.

FAQ’s

1. How often should I replace packings or seals in the GPX 85 Fluid Section?

Packings and seals are high-wear items and should typically be replaced every 3–6 months, depending on usage intensity and coating type. If you notice pressure loss or material leakage, replace immediately.

2. What signs indicate that the Drive Assembly needs maintenance?

Symptoms include slower cycling speed, irregular pump motion, excess vibration,clicking or grinding noises .If any appear, inspect gears, bearings, and drive rods.

3. Do I need to replace the entire siphon set or only individual components?

Not always. In many cases, replacing just the inlet strainer, siphon hose, or o-rings may solve the issue. However, if there are cracks or air leaks, replacing the full 5-gallon siphon set is recommended.

4. How do I maintain the Fluid Section to extend its lifespan?

• Flush the sprayer after every use
  
• Lubricate the piston regularly
  
• Replace worn ball valves or packings promptly
  
• Use only clean, filtered coatings
  Following these steps prevents premature wear and maintains pressure consistency.
  
  

5. What parts commonly wear out in the Cart Assembly?

The wheels, handle grips, mounting bolts, and vibration-affected fasteners may loosen or degrade over time. Regular inspection ensures safe mobility and prevents damage to the sprayer frame.