Integrated
Design
Fast
Spraying
Low Pressure
Spray Gun
Light
Weight
Ergonomic
Design
Perfect
Spraying Clear Coat
Delicate
Atomization
Patented
variable fluid flow technology
MPH-338 LVLP Mini Spray Gun
0.8-1.2mm Precision. LVLP Control. Invisible Touch-Ups on the Tightest Spots.
$138.99
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Integrated
Design
Fast
Spraying
Low Pressure
Spray Gun
Light
Weight
Ergonomic
Design
Perfect
Spraying Clear Coat
Delicate
Atomization
Patented
variable fluid flow technology
Free & Fast Ship
1-Year Warranty
60 Day Free Trial
1-on-1 Customer Service
MPH-338 LVLP Mini Spray Gun
Gold / 0.8mm / Standard (Plastic Cup)
$138.99
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Painter Review
Porphis MPH338 1.0 Mini Spray Gun, Spraying Fairing Panels, Upol 2081
Pete's Hobbies
Porphis MPH-338
Paint by Curry
Who says a mini spray gun has to sacrifice grip comfort?
In pursuit of extreme lightweight design, most mini spray guns on the market have handles as thin as chopsticks — resulting in hand cramps within ten minutes of use, and even affecting spraying accuracy.
The MPH-338 is designed specifically for professional technicians, featuring a wide‑body ergonomic handle. Despite its mini size, it offers a solid grip comparable to full‑size spray guns, evenly distributing pressure across your palm. No matter how delicate the task, you can work for hours without fatigue, with total control at your fingertips.
It’s the ultimate “power‑up” for small air compressors — saving over 30% on paint.
The core of LVLP technology is “low volume, ultra‑fine atomization.” The MPH‑338’s ultra‑low air consumption design allows your home small compressor (low CFM) to consistently deliver a smooth, fine paint film.
Less paint bounce‑back means more paint lands on your workpiece. Not only does it save you expensive paint, but it also protects your respiratory health and keeps your spraying environment clean and fresh.
Just 1.2 turns — instantly ready for action.
Many spray guns require 3–4 turns to fully open the spray pattern, making adjustment inefficient and easy to lose your settings.
The MPH-338 features an optimized internal precision thread path — from fully closed to fully open in just 1.2 turns. A single thumb movement gives you lightning‑fast response, allowing you to seamlessly switch between fine spot repairs and full‑fan spraying. Adjustment efficiency is increased by 300%, putting every drop of paint under your precise control.
No fragile rubber parts! All‑metal precision sealing.
90% of mini spray guns fail due to corroded seals. The MPH‑338 completely eliminates rubber O‑rings at the nozzle core, replacing them with metal‑to‑metal high‑precision sealing technology.
What this means: it is naturally immune to strong solvents. You can safely soak the gun in cleaning solvent without worrying about air leaks or paint drips. A quality tool that will serve you for ten years.
Which MPH-338 Setup Should You Choose?
Tech Specs
Specification
Materials and Processes
Included in the Box
600ml white cup
Manual
Service kit
Spray gun
Complete Your Master Setup
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FAQs - MPH-338
Q1: Can the MPH-338, as a mini spray gun, be used for automotive clear coat applications?
A: Absolutely. Although it’s a mini spray gun, it features advanced LVLP atomization technology. Using a 1.0mm or 1.2mm nozzle at 20–28 PSI, it can deliver an extremely fine mirror-like finish, making it ideal for spot clear coat repairs on wheels, side mirrors, fuel tanks, and other small areas..
Q2: My air compressor is very small (such as a 6-gallon / 24L compressor). Can it really handle the MPH-338?
A: That’s exactly where the MPH-338 shines. It uses LVLP (Low Volume Low Pressure) technology with extremely low air consumption. Even with a small portable air compressor, it can maintain stable air pressure output, helping prevent issues like pressure drop, sputtering, or uneven paint texture during spraying.
Q3: Will the fluid control knob loosen by itself during spraying?
A: Absolutely not. To solve the common issue of unstable adjustments on mini spray guns, we added a dedicated Needle Tightening Screw. Once you set your desired fluid output and lock the screw, the adjustment stays firmly in place, ensuring consistent paint flow during long spraying sessions and helping prevent color mismatch or uneven finishes.
Q4: What’s the practical benefit of achieving full spray pattern adjustment in just 1.2 turns?
A: Conventional spray guns usually require 3–4 turns to reach full adjustment, resulting in a much longer adjustment path. We optimized the internal thread design so the MPH-338 only needs 1.2 turns to go from fully closed to fully open with precise control. This allows painters to make rapid adjustments during real-world spraying, improving adjustment efficiency by up to 300%.
Q5: Can the MPH-338 be soaked directly in cleaning solvent during maintenance?
A: No problem at all. The MPH-338 features a precision metal-to-metal construction with no fragile rubber seals in its core internal structure. You can safely soak it in strong cleaning solvents without worrying about swollen, deformed, or corroded gaskets that could cause air leaks.
Q6: What are the advantages of a stainless steel fluid nozzle compared to a standard brass nozzle?
A: We use high-grade stainless steel, which offers excellent corrosion resistance and won’t rust when spraying waterborne coatings. It also has much higher hardness than standard brass nozzles. Compared with brass, stainless steel fluid nozzles maintain precise atomization for a much longer time and can provide over 3 times the service life.
Q7: Is it compatible with disposable cup systems like 3M PPS?
A: Yes. We designed the MPH-338 with standard connection threads. By using the appropriate precision stainless steel adapter, it can perfectly fit most mainstream disposable cup systems on the market, making cleaning and color changes much faster and more efficient.
Q8: What is the “patented needle packing nut assembly”? What does it do?
A: This is one of our core technologies. It features a self-adjusting compensation mechanism that ensures an ultra-smooth, silk-like trigger pull. At the same time, it completely prevents paint from leaking into the internal body of the spray gun, significantly extending maintenance intervals and overall service life.
M
Needed to do a tight blend on a 2021 Toyota highlander Bumper with a high build metallic. I would say It turned out perfect and the gun is just a joy to use. Love the patterndid not make me work hard at all. Do yourself a favor and pick one up it ranks with any pro gun out there.
L
Out of the box it a very light, small framed and attractive paint gun. It comes with everything you need to get started. First time shooting with it was with for some trim pieces off of a Toyota Tundra. I like the feel of the gun and sprays extremely well. The paint laid out nicely and well as the 4:1 Flat clear I was using. Easy cleanup on the gun and did I mention how pretty it looks. I would recommend this for smaller jobs.
H
I have three of these and you will not be disappointed. I have used the 1.0 nozzle to spray 2k high solids clear, candy urethane base and coarse silver base and it glossed them all out. You just have to get your settings on the gun right. I love my little Gold friend.
J
I bought 1 and loved it so much I decided to get a second. Now I have 1 for primer and 1 for clear coats. It atomizes perfectly for my small projects.
Thank you, Joel! We’re thrilled that you liked the MPH-338 enough to get a second one! We love hearing that you’re using one for primer and one for clear coats, and that the atomization works perfectly for your projects. Thanks for your continued support!
H
Love that little gun, I bought three. Perfect for smaller projects.
Thanks! The 338 may be little, but it sure knows how to lay down a finish. Three of them? That’s the best compliment we could ask for. 😊 Appreciate you!
t
Ive been painting almost 40 years.
I was absolutely amazed how well this gun lays out paint.
Thank you, Tim! 40 years in the game – that means a lot coming from you. Glad the 338 impressed! 🙏
J
This is a great little gun sprays great I have ordered 2 more of them
Thanks, Jeff! The little 338 is a beast – glad you love it! And 2 more on the way? That’s huge. Appreciate you! 🙌
b
perfect small bodied spray gun,spot on for door jams and tight places , ive used it on door insides, rocker panels with primer, base and clear ,i thin my coats down if needed to 16 seconds on zahn#4 cup and using .08 and the 1.0 tip it sprays real nice @ 18- 20 p.s.i. on the both base and primer and 26-29 p.s.i on high solids clear. the gun light from porphis sets on it a little tite but it works fine .
Hi Basscranker, thank you for the incredible technical feedback! It’s great to see a pro dialing in the MPH-338 with such precision—16 seconds on a Zahn #4 cup is spot on for those tight areas. We’re thrilled to hear it’s performing so well across primer, base, and HS clear with your 0.8mm and 1.0mm setups. Regarding the Porphis Gun Light, we designed the fit to be snug to ensure it stays perfectly secure during the tight-angle work you described. We truly appreciate you sharing your PSI settings with the community. Happy painting!
J
I really like this paint gun. I have guns that cost a lot more money, but this is a great value that works very well. I am going to try a couple of their other guns.
A
Awesome little spray gun. Very small in the hand but comfortable. The finish and quality are of a very high standard. I haven't sprayed with it yet but if it sprays as good as it looks and feels it will be a worthy addition to my DeVilbiss packed spraygun collection.
j
Its a great little gun but unfortunately the adapter does not take my cup system it seem a little to large in diameter and leaks.
P
All good very nice
C
Seems very well made, sprayed base coat metallic perfectly. Clearcoat also came out perfectly. I have the DV1S and this Porphis Can do everything that can do and do it just as well. Very happy with these guns as I have 6 of them.
C
Seems very well made, sprayed base coat metallic perfectly. Clearcoat also came out perfectly. I have the DV1S and this Porphis Can do everything that can do and do it just as well. Very happy with these guns as I have 6 of them.
G
Same quality as my higher priced guns. Haven’t used it yet, so I’ll have to add to this review later.
G
Same quality as my higher priced guns. Havent used it yet, so Ill have to add to this review later.
M
Impecável
M
Impecvel
J
Very nice spray gun, very recommendable!!
J
Very nice spray gun, very recommendable!!