Flexio 4000 Sprayer

$ 199.99
The FLEXiO 4000 stationary paint sprayer is perfect for longer painting projects, with less weight in your hand, because the motor is housed in the base on the ground. It has variable speeds for cutting time and effort on painting projects and can paint a wall 11 times faster than a brush.

The 4000 comes with 2 different nozzles – one for painting multiple rooms, decks and sets of furniture. The other nozzle for fine finishing on cabinets and trim. The new nozzle design delivers an improved spray pattern and adjustable control with less mess and overspray.

It has the flexibility to spray indoors and outdoors with the power to spray unthinned paint and stains with full coverage. Cleaning is faster than a brush or roller with just a few removable parts that separate and rinse clean.

Covers an 8’x10’ surface in minutes:
-Stain: 1 minute
-Latex: 5 minutes


FLEXiO 4000
FLEXiO 4000 Video
FLEXiO Stationary Setup
 FLEXiO Stationary Setup Video


  • X-Boost® Turbine
  • iSpray® Nozzle – For walls and ceilings
  • 15-Foot Air Hose
  • 1 ½ quart cup covers up to a 10’ by 12’ wall in one fill
  • Precise adjustments for various coatings and projects
  • Lock-n-Go® split gun design for quick cleaning
  • Zippered bag for storage of nozzles/cups and air hose
  • Detail Finish Nozzle - For small projects and a smooth finish
  • Cleans up in 5 minutes - just five parts to rinse off


Best Used On:

Small Craft Object, Furniture, Cabinets & Trim, Large Fence/Deck, Interior Room, and Exterior House/Shed

Optimal For

Exterior Latex, Interior Latex, Wood Sealers, Chalk/Milk Paints, Lacquers / Urethanes, and Solid Stain

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Flexio 4000 is rated 4.5 out of 5 by 37.
Rated 1 out of 5 by from Disappointing Sprayed 4 interior doors on two occasions. Started this week painting my exterior,made it 1/3rd of the way down a 28x7 wall and the turbine burnt out. I keep my tools clean, both filters were clean and I'm spraying latex which the Flexio 4000 is set up for. My sprayer is just outside of the 12 month warranty. Guess I'll head to the man store Harbor Tool Freight....
Date published: 2019-05-24
Rated 5 out of 5 by from Plenty of power I applied an Al’s bed liner using the Wagner 4000. The material is a thick-pudding type of substance. But It shoots the product out really well and Much faster than I expected. Controls over spray nicely too. I feel this gun is more practical to use than the hoper style pneumatic gun the product came with. The key to clean up is to wait till the next day once it’s fully dried. Then disassemble the gun and peel the dried product right off of the components.
Date published: 2019-05-17
Rated 5 out of 5 by from Great tool Facing the task of painting twelve doors (four are louvered bifold) and many shelves I decided to purchase this tool. My initial use was with primer. Second was with latex enamel. In each case the paint went on good with no thinning required. I did have to make flow adjustments,as expected. Cleanup was quick and easy. I painted two bi-fold doors and six medium shelves, with cleanup, took less time than painting one of the doors by brush. In fact less time than cleaning a paint brush and roller. Yes over spray does appear to waste paint. But the cost of the paint loss compared to the time saved is acceptable.
Date published: 2019-02-07
Rated 2 out of 5 by from Unit brought me pain whilst ceiling painting Second use on ceilings to n my house. First room was last week and the Flexio 4000 performed well. After about 2 gallons of spraying yesterday it was spit clog and poor spray pattern. Cleaned nozzle and air passages and then noticed the unit was spewing paint with the trigger released... Sometimes this was a lot of volume. Stopped work and went thru the cleaning procedure.. Dunked the valve head on warm soapy water, cleaned with brush... Reassembled and ran for a time before spewing again... And poor pattern onto ceiling. Arrgh! Today after an all night soak with the trigger held open to get cleaning water in there, I reassembled the unit to repaint over the 35 by 25 foot area of bad application and did a water test into the shower... Wuff! Spewed water when no finger on the trigger! So I repainted a 50 by 25 foot ceiling with my Wagner smart sidekick power roller in have the time it took this futzy sprayer to do a lousy job. I conferred with another Flexio owner and he reports the same spew issue with his unit... Seems the material release valve opened by the trigger does not seal once the unit has a few gallons through it. Since Tec Support was closed by the time I could call them, I decided to post this review. I need to know from Wagner of the material flow valve can be cleaned.. Do I need to disassemble the trigger and pull out the back end of the head unit to fix this thing? I suspect Wagner doesn't do field testing of these Chinese made Flexio units... Otherwise they would have encountered what looks to be a design flaw!
Date published: 2019-01-22
Rated 5 out of 5 by from YUP AND YUP New to the paint sprayer game and this unit is the absolute Ballz! very easy to use and clean. Clear coated a beamed ceiling in 30 min. Stop researching now and buy the sprayer. 5 stars, 2 thumbs up, hole in one, bingo!
Date published: 2019-01-07
Rated 4 out of 5 by from Very easy to use This made painting my wooden farm fences easy. The long hose was great as I could move along quickly. The only change I would suggest would be have an adaptor so you could pull paint out of a pail.
Date published: 2018-10-21
Rated 1 out of 5 by from Terrible This has been a piece of junk from the beginning. I could never get it to spray an even coat, always had at least a little sputter that created an uneven finish. Especially for how much it cost, it really should be much better!!
Date published: 2018-09-29
Rated 2 out of 5 by from Poor spray pattern Bought product at Lowes after doing a great deal of research. A customer at Lowes recommended the Flexio 4000. I used it to paint an interior room with Sherwin Williams flat paint and it took a very long time. The best spray pattern was no more than 3 to 4 inches. I could have rolled the walls alot faster. Easy to use and clean, but I could not get a larger pattern and had to refill the container quite often.
Date published: 2018-09-23
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Can you use this sprayer on oil base stain?

Asked by: Sheffer
Yes the Flexio can use water and oil based paints, stains and finishes.
Answered by: Technical Support
Date published: 2019-09-10

can you use this t paint a ceiling?

Asked by: Babs
Yes you can. This link may be beneficial, https://www.wagnerspraytech.com/projects/interior-painting-tips-for-ceilings/. If you have any further questions feel free to call us at 1-800-328-8251.
Answered by: Technical Support
Date published: 2019-09-03

can i use this sprayer to apply concrete sealer on my concrete driveway?

Asked by: yardboy1951
Concrete sealer is usually very thin and either water based or oil based, which are both fine in any Wagner branded sprayer.
Answered by: Technical Support
Date published: 2019-08-27

FLEXiO 5000 vs 4000. Is there any difference in the power/performance or is the only difference the storage

Asked by: John M
All of the Flexio models perform very much the same, the difference between all of them is physical setup. The 4000 has a 15' air hose and little storage bag for the small parts, the 5000 has an 11' air hose and hard case storage for everything. Good luck with your projects.
Answered by: Technical Support
Date published: 2019-08-23

Will this spray shellac?

Asked by: Docbunn
We do not suggest using shellac or lacquer in any Wagner branded sprayer. We make and HVLP line for woodworkers and they can handle any type of finish. Call us for a link at 1-800-328-8251.
Answered by: Technical Support
Date published: 2019-08-12

Which nozzle do i use for chalk paint

Asked by: Jake32
For the chunky, chalk paint finish, use it unthinned in the iSpray nozzle, for a nicer smooth application, thin it up to 40% with water and use the Detail nozzle. Good luck with your project.
Answered by: Technical Support
Date published: 2019-08-08

what sprayers allow you to draw from the paint cans itself.

Asked by: Dennis Whobrey
In the Flexio HVLP line the 990 and 970 models can draw paint directly from the can. We also have our HEA airless sprayers - https://www.wagnerspraytech.com/?s=hea For more help choosing the right sprayer for you, call us at 1-800-328-8251.
Answered by: Technical Support
Date published: 2019-07-31

what sprayer works best for acrylic paint. i want to paint vinyl siding.

The Flexio 4000 or 5000 would be ideal for painting your siding with Acrylic paint. The main difference with those two sprayers is the 5000 comes with a hard plastic storage case while the 4000 does not. For more help give us a call at 800-328-8251, thanks for your inquiry!
Answered by: Technical Support
Date published: 2019-07-12
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