The PowrTwin 6900 Plus DI is the 6900 Plus built for very heavy coatings. Titan gives it a submersed foot valve, an EZ swing frame, a Honda GX160 engine and up to four guns on the gas model. The electric version is a separate unit with its own power limits. Its parts are on the 6900 Plus DI diagram pages, separate from the standard 6900 Plus.
What DI adds
Titan does not publish what the letters DI stand for, so this guide just calls it the DI model and describes what is different. The difference is at the pump inlet. DI models use a submersed foot valve, which Titan describes as designed for very heavy materials including drywall mud. Titan also calls it "the most efficient siphon system on the market today". That is Titan's own claim, and we repeat it as theirs rather than as something we measured.
The second change is the frame. Titan says the EZ swing frame decreases spillage during paint changes, and that it lowers the height and centre of gravity of the sprayer for transport. Everything else follows the 6900 Plus pattern: a hydraulic motor strokes a piston fluid section, Titan calls it slow-stroking, and the same family of hydraulic and filter parts shows up in its diagrams.
Titan lists the DI models for very heavy coatings including drywall mud, and for low-viscosity primers up to heavy-bodied finishes. If your work is mostly stains, lacquers, latex and similar coatings, the standard 6900 Plus is the one Titan lists for those, and it has its own set of diagrams.
Verified specs
PowrTwin 6900 Plus DI (gas), figures from Titan's product page
| Item | Figure |
|---|---|
| Engine | Honda GX160 |
| Number of guns | Up to 4 |
| Largest tip, 1 gun | 0.050 in. |
| Largest tip, 3 guns | 0.023 in. |
| Largest tip, 4 guns | 0.019 in. |
| Pressure control | Starts at 400 psi |
| Supplied with the sprayer | RX-Apex Non-Filter gun, 517 tip, 3/8 in. x 50 ft hose |
We do not list flow, maximum pressure or the 2-gun tip for the 6900 models. Titan's product pages and its 2012 owner's manuals give different figures for them, and we would rather leave them out than pick one. Read your own manual for those numbers. The gas complete unit on the site is 0290021.
The tip limits show why gun count matters. A 0.023 in. tip suits the heavier end of dry fall and one-coat work in Titan's tip chart, while 0.019 in. is the top of the range for primers and commercial architectural coatings. Add a fourth gun and you give up some of the tip size you would use on a single gun. Never run a tip larger than the limit for the number of guns connected.
Filters and screens
Titan's DI owner's manual lists a 10 mesh Rock Catcher inlet filter and a 50 mesh outlet filter. The inlet side matters more on a DI sprayer because the foot valve sits in the container, so the inlet screen is the first thing to check when the pump stops drawing. The diagram lists the 451-018 inlet screen in the fluid section. The manual's daily task is cleaning the inlet filter screen, so make it part of the end-of-day routine.
On the pressure side, the manifold filter is the high-pressure filter described in the same manual. 930-006 is the 50 mesh insert for latex and normal architectural coatings. Titan's page says the easy-remove filter takes only 3 turns to remove, which makes the cleaning check quick. Stains and fine material use the 100 mesh 930-007, heavy materials the 5 mesh 930-005, and mastics the 0 mesh 930-004.
Gas 0290021 and electric 0290029
There are two complete units for this model on the site. 0290021 is the gas sprayer. 0290029 is the electric one. The site also carries a listing numbered 0290021X for a 6900 Plus DI Honda. If you are not sure which one matches your serial number, call (713) 931-0006 before you order.
Titan lists the electric 6900 Plus DI at 1.25 gpm with up to three guns and a 2 HP DC motor, and the DI owner's manual agrees on the flow. Electric units need a 20 amp service outlet. Both manuals recommend placing the sprayer within 10 to 15 feet of the outlet with a short cord and a long paint hose, and if you must use an extension cord it should be a grounded 3-wire #12 cord. Gas and electric are swapped with a Convertokit, so the gas Convertokit diagram is worth bookmarking if you ever change power source: 6900 Plus DI gas Convertokit.
Where its parts are
Use the 6900 Plus DI pages, not the standard 6900 Plus pages. The two fluid sections are not interchangeable by assumption, so match the diagram to the name on your sprayer. These are the pages that matter most:
Bleed valve assembly, belt (449-125), belt guard assembly, swivel fitting and pump shroud.
Packing springs, repacking kit 138-153A, valve seats and balls, foot valve cage, piston rod 451-131, cylinder 0349606, foot valve housing 451-132.
Pressure control knob, hydraulic motor, pulley and the hydraulic tank side.
Manifold filters, siphon hose assemblies, Coolflo, Piston Lube and the RX-Apex gun.
Titan sells the whole DI fluid section as a complete assembly, 451-210, which is the route when the section is worn beyond a repack. For routine work, Titan's DI manual lists 144-050 as the minor kit and 143-500 as the major kit. The DI manual's own maintenance guidance is to service the fluid section after about 1,000 hours, sooner if the top packing leaks or one stroke becomes faster than the other. If a valve seat is worn on one side, the manual says to flip it to the unused side, and replace it once both sides are worn.
Fluid goes in the hydraulic side too. Titan requires Coolflo, 430-361 by the gallon, and says not to use any other fluid. A siphon hose with the rock catcher, 103-830, is on the accessories page.
6900 Plus DI units and the parts most often ordered with them:
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The Short Version
The 6900 Plus DI is the 6900 Plus with a submersed foot valve and an EZ swing frame, for very heavy coatings. Gas models run up to four guns with a Honda GX160; electric models run up to three. Order from the 6900 Plus DI diagram pages, and call (713) 931-0006 if a listing or serial number leaves you unsure.
Not sure which 6900 Plus DI part you need?
Call (713) 931-0006 with your model and serial number and our parts team will confirm the part before you order.
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