GRACO 246428 – LineLazer 3400 Endurance Chromex Displacement Pump

GRACO 246428 – Endurance Chromex Piston Pump

GMAX replacement pump designed for professional spray applications requiring reliable performance and easy maintenance. Features GRACO’s proven pump technology for consistent material flow and long service life.

Genuine Graco Endurance Pumps lead the industry in durability and ease of installation. Keep a spare on hand to minimize downtime in the field.

Replacement pump for GMAX 3400 Standard Series sprayers model year 2005 and newer.

Lasts 2X Longer than competing pumps

Chromex rod and hardened stainless steel cylinder

Long Life V-Max Blue Packings

Faster cleaning with the QuikAccess intake valve

Additional Specifications

Component Type: Complete Pump Lower

Pump Type: GMAX

Category: Standard replacement pump

Fluid Inlet Size (in)	1 1/4
Fluid Inlet Thread Gender	Male
Fluid Inlet Thread Type	UNF
Fluid Outlet Size (in)	1/4
Fluid Outlet Thread Gender	Female
Fluid Outlet Thread Type	NPT
For Use With	GMAX 3400 Standard Series (2000 and newer)
Maximum Working Pressure (psi)	3300
Type	Replacement Pump

Features

Complete pump lower assembly

Designed for FinishPro 390 system

Professional grade construction

Fine finish application optimized

Designed for high-pressure airless spraying

GMAX pump technology for reliable performance

Applications

Fine finish spraying

Professional painting applications

Airless spray systems

Industrial coating applications

Professional painting

Airless spray applications

Compatible Equipment

FinishPro 390

Ultra Max II 490

GMAX spray equipment systems

Related Parts

249125 – Packing Kit

243176 – Cylinder

311905 – Operation Manual

311911 – Repair Manual

309250 – Pump Manual

311937 – Gun Manual

246385 – Nylon Cap Inleet Strainer 7/8″

249125 – Kit Repair, Piston Rod

243176 – Displacement Pump Cylinder Repair Kit

244194 – Pump Repair Kit

This is a complete pump lower assembly component specifically designed for the FinishPro 390 airless sprayer system This is a complete pump lower assembly used across multiple Ultra Max II series electric airless sprayers with 3300 PSI maximum pressure rating This appears to be a standard replacement pump in GRACO’s GMAX line. The page emphasizes GRACO’s ‘Power of One’ concept for easy pump replacement and their QuikPak cartridge repair system for quick maintenance.

Reference Manuals

300564 (Page 12) Fine Finish Solutions

337554 (Page 22) Gas Airless Sprayers

337659 (Page 22) Electric Sprayers Australia

344383 (Page 10) Gas Airless Sprayers

344386 (Page 12) Airless Accessories Brochure