HVLP guns whats the difference?

Everything you need to know about finishing.
Post Reply
templecarpentry
Occasional Poster
Posts: 86
Joined: Thu Dec 20, 2012 9:53 pm
Contact:

HVLP guns whats the difference?

Post by templecarpentry » Sat Feb 23, 2013 4:11 pm

So there are these type

Image

and these

Image

i want to spray your average interior finishes mainly white laquer 30%sheen no higher. What are the differences between the two types of gun (air hose at back/base of handle) and does the one with the inlet below run from a compressor? how big does the compressor need to be? And is it still hvlp?

I do not need to know the difference in manufacturer quality, just want to know what each one does better/worse that the other. Budget wants to stay at £400 really.

I really need some help, i am a competent sprayer but have never had to set up a system before i know it sounds odd.
Check out my website here http://www.templecarpentry.co.uk

My other new website is now up and running http://www.shaker2go.co.uk

And my blog here http://www.templecarpentry.co.uk/blog.html

templecarpentry
Occasional Poster
Posts: 86
Joined: Thu Dec 20, 2012 9:53 pm
Contact:

Re: HVLP guns whats the difference?

Post by templecarpentry » Tue Feb 26, 2013 6:55 am

So nobody knows? awesome.
Check out my website here http://www.templecarpentry.co.uk

My other new website is now up and running http://www.shaker2go.co.uk

And my blog here http://www.templecarpentry.co.uk/blog.html

jrm
Subscriber
Posts: 653
Joined: Sun Aug 17, 2008 7:16 pm
Location: Lancashire
Contact:

Re: HVLP guns whats the difference?

Post by jrm » Tue Feb 26, 2013 7:41 am

If it helps, the Fuji guns, which are turbine driven like the Apollo pictured, have the air inlet through the handle. I think the position of the hose is a red herring if you are trying to see whether it is a HVLP conversion or turbine gun and is just down to the individual design. That Apollo is their cheaper one and I guess is less sophisticated than their bigger kit. They all work basically the same. In the Fuji, there is a tube which diverts some of the air to the cup to keep it pressurised and which has a no return valve to stop paint flowing back along the air line. Personally, I think it is more useful for furniture with the hose through the handle. The benefit of the turbine systems are that you are buying a complete system which is very portable. A compressor HVLP conversion gun is probably a good idea if you already have a large compressor but is going to work out expensive if you don't because they need a lot of air I believe. HTH.

John

woodsmith
Subscriber
Posts: 2059
Joined: Mon Oct 01, 2007 8:02 am
Location: Shrewsbury
Contact:

Re: HVLP guns whats the difference?

Post by woodsmith » Tue Feb 26, 2013 6:33 pm

I have a DeVilbis HVLP gun that runs at about 2 bar and seems happy enough with my smallish 24l compressor. I really like it but I have never used a Fuji or Apollo system so can't tell you how they compare.
Keith

templecarpentry
Occasional Poster
Posts: 86
Joined: Thu Dec 20, 2012 9:53 pm
Contact:

Re: HVLP guns whats the difference?

Post by templecarpentry » Tue Feb 26, 2013 8:11 pm

thanks guys. Just in the processs of deciding which route to go down, i think i would like to set up a proper spray room, which would benefit the company and allow a bit of growth room for expansion. I fear that a portable turbine is maybe a bit restrictive? ie. parts and different gun compatibility, whereas with a compressor it is plug and play (minus the setting up obviously).
Check out my website here http://www.templecarpentry.co.uk

My other new website is now up and running http://www.shaker2go.co.uk

And my blog here http://www.templecarpentry.co.uk/blog.html

furynaturre
Subscriber
Posts: 234
Joined: Sun Sep 09, 2012 9:22 pm
Location: South East London
Contact:

Re: HVLP guns whats the difference?

Post by furynaturre » Tue Feb 26, 2013 9:01 pm

Here's my 2p's worth.

I've got a Fuji q4 turbine, with it's corresponding gun, which in all honesty is very very good indeed, but it is bloody noisy!

I've also got a monster 150l compressor, but I don't use an HVLP gun with it. I much prefer a conventional gun. I know it's very old school, and there is all this babble about saving on materials with and HVLP set up, but I've done back to back tests, and I want to be very clear here, it's probably down to my technique more than anything (although the finish was the identical). I used the same amount of AC or pre-cat Lacquer per sqm in either set up, I found had to move considerably slower with the Fuji to keep the same wet edge, and there was a comparable amount of over-spray dust without the fans on (just for test purposes). I did try different air caps and needles on the fuji but it still required a slower rate of application.

Stick with a compressor and either HVLP (if the compressor is big enough) or a conventional gun (if you can still get them?) don't skimp though I know other forum members get brilliant results from budget guns but I've always struggled with consistancy, DeVilbis are superb as are Iwata. The other advantage of a compressor set up is you can always run a pressure pot if you have got rakes to do!

The fuji is brill for smaller jobs but the noise puts me off using it for extended periods.

James

templecarpentry
Occasional Poster
Posts: 86
Joined: Thu Dec 20, 2012 9:53 pm
Contact:

Re: HVLP guns whats the difference?

Post by templecarpentry » Wed Feb 27, 2013 5:38 am

thats a great bit of info, many thanks for your time and input.

Phil
Check out my website here http://www.templecarpentry.co.uk

My other new website is now up and running http://www.shaker2go.co.uk

And my blog here http://www.templecarpentry.co.uk/blog.html

jrm
Subscriber
Posts: 653
Joined: Sun Aug 17, 2008 7:16 pm
Location: Lancashire
Contact:

Re: HVLP guns whats the difference?

Post by jrm » Wed Feb 27, 2013 7:27 am

Just another thing. Yes, the noise from the Q4 is a pain. Another thing to remember is that these turbines do wear out. It's tempting to just leave it running while you are repositioning components or stopping for whatever reason, especially since it should be, and probably is, well away from the spraying. I turn it off for even brief pauses. This saves the turbine but also the noise is a lot less wearing if you just have to put up with it while actually spraying. A lot more time can be spent moving things about than actually painting. Make it convenient to turn it on and off by routing through a nearby switch and it's an easy habit to get into.

John

templecarpentry
Occasional Poster
Posts: 86
Joined: Thu Dec 20, 2012 9:53 pm
Contact:

Re: HVLP guns whats the difference?

Post by templecarpentry » Wed Feb 27, 2013 7:37 pm

The more i think about it the more i am swaying to a turbine had a lot of time thinking about it now. T
Check out my website here http://www.templecarpentry.co.uk

My other new website is now up and running http://www.shaker2go.co.uk

And my blog here http://www.templecarpentry.co.uk/blog.html

OryxDesign
Subscriber
Posts: 343
Joined: Tue Oct 05, 2010 7:51 pm
Location: Staplehurst
Contact:

Re: HVLP guns whats the difference?

Post by OryxDesign » Wed Feb 27, 2013 7:58 pm

jrm wrote:Just another thing. Yes, the noise from the Q4 is a pain. Another thing to remember is that these turbines do wear out. It's tempting to just leave it running while you are repositioning components or stopping for whatever reason, especially since it should be, and probably is, well away from the spraying. I turn it off for even brief pauses. This saves the turbine but also the noise is a lot less wearing if you just have to put up with it while actually spraying. A lot more time can be spent moving things about than actually painting. Make it convenient to turn it on and off by routing through a nearby switch and it's an easy habit to get into.

John
I've put my turbine in a different room, I turn it on and off by a remote socket, you can attach the remote to the gun if you like. Having the cyclone in a different place helps get clean air into it and removes the explosion risk.

OryxDesign
Subscriber
Posts: 343
Joined: Tue Oct 05, 2010 7:51 pm
Location: Staplehurst
Contact:

Re: HVLP guns whats the difference?

Post by OryxDesign » Wed Feb 27, 2013 7:59 pm

templecarpentry wrote:The more i think about it the more i am swaying to a turbine had a lot of time thinking about it now. T
You can come and have a go with mine if you like, I'm not that far from you, I'm in Staplehurst.

Si

templecarpentry
Occasional Poster
Posts: 86
Joined: Thu Dec 20, 2012 9:53 pm
Contact:

Re: HVLP guns whats the difference?

Post by templecarpentry » Thu Feb 28, 2013 5:31 am

That is very kind of you si. I will bear that in mind when it comes to decision time. Thanks.
Check out my website here http://www.templecarpentry.co.uk

My other new website is now up and running http://www.shaker2go.co.uk

And my blog here http://www.templecarpentry.co.uk/blog.html

jonnyd
Subscriber
Posts: 3264
Joined: Wed Mar 12, 2008 10:07 pm
Location: Lincolnshire
Contact:

Re: HVLP guns whats the difference?

Post by jonnyd » Thu Feb 28, 2013 6:33 pm

jrm wrote:Just another thing. Yes, the noise from the Q4 is a pain. Another thing to remember is that these turbines do wear out. It's tempting to just leave it running while you are repositioning components or stopping for whatever reason, especially since it should be, and probably is, well away from the spraying. I turn it off for even brief pauses. This saves the turbine but also the noise is a lot less wearing if you just have to put up with it while actually spraying. A lot more time can be spent moving things about than actually painting. Make it convenient to turn it on and off by routing through a nearby switch and it's an easy habit to get into.

John
I have had to replace the turbine in my Fuji probably about 2 years ago but it had seen a lot of service it was about £175 if I remember right. I now also turn it off whenever convenient

Cheers

Jon
For the latest from the workshop follow on twitter @JonnysWorkshop
Pics from the workshop on Instagram @jonnydburn

glenhyrst
New Member
Posts: 1
Joined: Sun Mar 03, 2013 7:05 am
Contact:

Re: HVLP guns whats the difference?

Post by glenhyrst » Sun Mar 03, 2013 7:34 am

What are the differences between the two types of gun (air hose at back/base of handle) and does the one with the inlet below run from a compressor?
I've just opened up my Fuji for the first time and read the bumph which indicates that the hose position at the top is used when the handle gets too hot to handle from air entry in the lower position after prolonged use in warm weather - the air from the turbine having been warmed in the process.

Post Reply