Hazet blow gun review

My old plastic blow gun had become unusable and was leaking, so I bought one of these to replace it: welcome to my Hazet blow gun review!

When I first started my air tool collection, I bought a cheap plastic blow gun, probably because I knew I needed one but didn’t think it would get much use. I was wrong about that – there are loads of uses!

  • Cleaning out blind bolt holes before reassembly (e.g. cylinder head bolt holes).
  • Cleaning bicycle chains and evaporating solvent after cleaning.
  • Removing grass and dust from remote controlled cars.
  • Doing the first inflation on bicycle tubeless tyre setups, where the air flow rate through my tyre inflator isn’t sufficient to seat the bead.
Picture of a cheap plastic air blow gun

The plastic blow gun did the job for a while but then started to become a nuisance: the valve inside the gun started leaking air as soon as it was connected to the compressor, even if the trigger wasn’t pulled. As one of my most commonly used air tools, this air leak was annoying me on a regular basis, so it was time for a change.

What to consider when choosing a blow gun?

  • Control – does the trigger enable good control of the air flow or is it more of an on/off switch? Avoid the latter.
  • Is the nozzle long enough to reach down into long bolt holes?
  • Does it look like it will fall apart if (when) you drop it?
  • Can it handle the full pressure delivered by your compressor? Check the manufacturer’s specifications.

Introducing the Hazet 9040-4 blow gun

My search led me to the Hazet 9040-4 blow gun. Hazet are a German company and their air tools seemed to get good reviews. The following features of the Hazet 9040-4 blow gun appealed:

Picture of the Hazet 9040-4 air blow gun
  • Maximum working pressure of 10 bar, which roughly matches the maximum working pressure of my compressor.
  • Metal body.
  • Long and short nozzles.
  • Valve to adjust air flow, as well as the trigger.
  • High flow air fitting included. I use PCL XF couplings on all my air tools and the included fitting is compatible with these.

I also felt the price (which I think was around £17) was very reasonable.

This gun has the option of the air connector being at the top (for airlines hanging from above) or the bottom (as per the vast majority of air tools). This is the one feature I didn’t need, but no matter, it comes with a blanking plug for whichever hole you aren’t using.

Hazet blow gun review following some real world use

I really like my new blow gun and would definitely recommend it!

The knob to adjust the air flow is really useful, especially for working on fragile items. The trigger is effective and allows for progressive control of air flow.

I don’t have much use for the short nozzle so tend to stick with the long nozzle. The long nozzle has a silicone rubber anti-scratch tip, which seems to be effective. My only concern with it is how well it is stuck onto the metal nozzle, because I really wouldn’t want it to get stuck and come off in a blind bolt hole. However it has remained firmly in place so far.

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