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 & 5000 Setup
FLEXiO 4000 & 5000 Setup  Video
FLEXiO 2000, 3000, 4000, 5000 Spraying
FLEXiO 2000, 3000, 4000, 5000 Spraying 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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Parts and Accessories

P/N 0529013
Detail Finish Front End

Detail Finish Front End

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P/N 2331571
Air Filter for Flexio Handheld Sprayer (Single Pack)

Air Filter for Flexio Handheld Sprayer (Single Pack)

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P/N 0520006
iSpray Front End

iSpray Front End

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P/N 0529055
Studio Spray Tent

Studio Spray Tent

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Flexio 4000 is rated 4.3 out of 5 by 39.
Rated 1 out of 5 by from Motor Quit I bought this to paint two bathrooms that we had remodeled and an office in our house. I was surprised but ok with the amount of masking off that I had to do. I had to do the ceiling in the office along with the walls. Had issues with clogging but I think that was more operator error than anything. Afterwards, I cleaned the unit and nozzle per the instructions. The next day I set up to do the walls. Once I got the adjustments right, it worked great and I was pleased with the results for the first two and half walls. Then the trouble started: Mid-way through the third wall, the motor started making a funny noise and losing power. I shut it off and thought maybe I would let it cool. After about an hour, I tried again and the motor continued to make a bad noise and lost power and started to smell. I am going to take it back to the place of purchase for my money back.
Date published: 2019-11-11
Rated 1 out of 5 by from No parts available Recently bought the unit and used it once. Performed ok and cleanup was easy. Now need it again but somehow I misplaced the sprayer handle. Search on Wagner website for Flexio 4000 parts shows no results.
Date published: 2019-09-27
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
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Other than the length of the hose and cost, what is the difference between the Flexo 4000 and the 5000?

Asked by: Wendell
The only other difference is the storage. The 4000 has a small bag for holding the gun and small parts, the 5000 has a hard case that holds everything. Good luck with your projects.
Answered by: Technical Support
Date published: 2019-11-20

Will this unit spray enamel paints?

Asked by: Redd
Yes the Flexio line will spray enamel paints. For a fine finish, use the Detail Finish nozzle and thin the paint 5-10%, spray from 6" away and apply a wet coat with each pass. Good luck with your projects. For help call us at 1-800-328-8251.
Answered by: Technical Support
Date published: 2019-11-04

Can I use this to spray Epoxy acrylic paint to refurbish bathtubs, aloha 

Asked by: Chico
We do not recommend this sprayer for epoxies or for refinishing bathtubs, it will not hold up. You can use the Titan Tool CapSpray 95, it will do the job perfectly. You can find information on it at this link, https://www.titantool.com/capspray-95.html. Feel free to call us at 1-800-526-5362 with any questions you may have.
Answered by: Technical Support
Date published: 2019-10-10

Can I use the FLEXiO 4000 to spray lacquer?

Asked by: Teacher Phil
All of our Wagner sprayers will spray water base lacquer only, not solvent base lacquer so you will need to check which one you are using first. If you want to us a solvent base lacquer you may want to look at one of our Earlex sprayers at http://www.earlex.com/. Feel free to call us at 1-800-328-8251 if you would like further assistance.
Answered by: Technical Support
Date published: 2019-09-30

Can this sprayer handle big jobs like the exterior of a stucco 3500 square foot home? I read that someone did a 7x28 wall and theotor burned out.

Asked by: ljshort
While the Flexio 4000 is a great sprayer that is a pretty big job. I would look at one of our HEA sprayers at this link, https://www.wagnerspraytech.com/products/paint-sprayers/high-efficiency-airless-series/. Depending on what type of paint you are spraying depends on which one you should purchase, don't just purchase the cheapest one as that may not be the proper sprayer. It must match your paint so once you have picked out the paint call us at 1-800-328-8251 with the paint so we can get the specifications off of the paint and we will help you choose the right sprayer.
Answered by: Technical Support
Date published: 2019-09-23

Can a Flexio pull paint from a bucket of paint? I read "somewhere" that this can be done but according to what I've been reading in the comments you have to fill a cup and hold the weight of both paint and sprayer up in the air.

Asked by: LJshort
The Flexio 970 and Flexio 990 can pull paint directly from a gallon or five gallon container. The rest of the Flexio series cannot. Their turbine push air into the container pressurizing the cup and forcing paint up the tube and out the front of the gun. If you have any further questions feel free to call us at 1-800-328-8251 and we will assist you.
Answered by: Technical Support
Date published: 2019-09-23

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
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