The 8900 Plus runs up to five guns and delivers up to 2.50 gpm; the 6900 Plus runs up to four. At every gun count they share, the 8900 allows a larger tip. The 6900 uses a Honda GX160 and the 8900 a GX200. Their fluid sections use different rods and cylinders, so order from the right diagram.
The short answer
Choose by how many guns you need to feed and how large a tip they need. The 6900 Plus runs up to four guns. The 8900 Plus runs up to five and delivers up to 2.50 gpm (9.5 L/min), with a maximum pressure of 3300 psi (22.8 MPa). We do not print a 6900 flow or pressure figure here: Titan's own product page and its 2012 owner's manuals give different numbers for that pump, so look at the manual that came with yours.
Both are hydraulic-drive piston sprayers, so the choice is not about technology. It is about capacity: gun count, tip size and the coating you plan to spray.
Where they differ
Gas PowrTwin 6900 Plus vs 8900 Plus
| 6900 Plus | 8900 Plus | |
|---|---|---|
| Engine (Titan's page) | Honda GX160 | Honda GX200 |
| Engine size (Plus manual) | 163 cc | 196 cc |
| Number of guns | Up to 4 | Up to 5 |
| Maximum tip, 1 gun | 0.050 in. | 0.054 in. |
| Maximum tip, 3 guns | 0.023 in. | 0.032 in. |
| Maximum tip, 4 guns | 0.019 in. | 0.028 in. |
| Maximum tip, 5 guns | Not applicable | 0.024 in. |
| Complete unit on the site | 0290013 | 0290018 |
The 6900 two-gun tip is left out because Titan's page and its manuals give different values. Never exceed the maximum tip for the number of guns.
The tip numbers are the useful part. On three guns the 8900 allows a 0.032 in. tip against 0.023 in. on the 6900, and on four guns 0.028 in. against 0.019 in. A 0.019 in. tip is at the primer end of Titan's chart (0.017 in. to 0.019 in. for primers), while the 8900's 0.028 in. on four guns reaches into the elastomeric range (0.021 in. to 0.031 in.). If you plan four guns on a coating that needs a bigger orifice, that gap is the reason to step up.
We do not print horsepower or weights for either pump, because the sources disagree on both. The engine displacement figures above come from the Plus manual and agree with the engine models on Titan's page.
What they share
- A slow-stroking hydraulic piston, which is how Titan describes the whole Plus line.
- A vented hydraulic fill and dipstick, and an easy-remove filter that Titan says takes only 3 turns to remove.
- A wrap-around frame, a cart with a telescoping handle and a pail hook.
- The same listed applications: stains, lacquers, epoxies, enamels, elastomeric, latex, dry fall and block fillers.
- The same maintenance routine in the manual: check the dipstick and fill the packing oil cup half full with Piston Lube daily, and use Coolflo as the only hydraulic fluid.
Parts that differ
Both fluid sections share many parts: the 138-153A repacking kit, the 142-004 upper and 142-003 lower packing springs, the 143-019 retaining ring and the 0509710 outlet valve ball all appear on both diagram pages. What changes is the part that moves and the part it moves in:
Fluid section parts that are specific to each model
| Part | 6900 Plus | 8900 Plus |
|---|---|---|
| Rod | 143-127 piston rod | 144-117 displacement rod |
| Cylinder | 143-822 cylinder | 144-832 pump cylinder |
Open your model's page: the 6900 Plus fluid section or the 8900 Plus fluid section.
Belts need care. The 8900 Plus main assembly page lists the 0290536 V-belt (A-41). The 6900 Plus main assembly page lists 449-125 (A-40) and 449-181 (A-38, listed as 120V). The 449-181 also appears on the 8900 page, so do not pick a belt from a comparison like this one. Open your own 6900 main assembly or 8900 main assembly page and match the callout. The manual describes changing the belt after pressure relief by lifting the front of the engine or motor to release belt tension.
How to decide
Count your guns
Four or fewer fits either pump. A fifth gun means the 8900 Plus.
Check the tip you need at that gun count
Look up the coating in the tip chart in the manual, then compare it with the limit for your gun count in the table above.
Plan for the engine
Both are gas pumps here; electric versions exist for each, and Titan's page and the 6900 manuals agree the 6900 Plus electric delivers 1.25 gpm.
Confirm before you order parts
If you already own one, read the model and serial number off the sprayer and call (713) 931-0006 if the diagram leaves any doubt.
Units and parts for each pump:
The Short Version
Pick the 6900 Plus for up to four guns on smaller tips, and the 8900 Plus when you need a fifth gun or larger tips at the same gun count. Their rods and cylinders differ, so order from the matching fluid section page.
Still deciding, or not sure which diagram is yours?
Call (713) 931-0006 with your gun count, coating and model details and our parts team will point you to the right pump or part.
(713) 931-0006Order by Parts Diagram