Spay Painting Guns

You could also have an airless gun. Can you post pictures?

I am having trouble downloading pictures, but they are definately not airless guns. They both have suction paint pots, and their capacities are roughly, .5 & 1 litre. Incidentally, what are the relative advantages of these two types of guns...??

http://www.machinemart.co.uk/shop/categories/search/spray-guns-spraying-equipment-air-brushes

look for a comparison

is you gun anything like the ones in the pictures ? if so youve found it easy really

http://www.google.co.uk/search?q=paint+spraying+guns&sourceid=ie7&rls=com.microsoft:en-gb:IE-SearchBox&ie=&oe=&rlz=1I7GZEU_en&redir_esc=&ei=2zU4TIKbIcSEnQe1suzYAw

Do these guns work on dogs, and cats? I've got some cats I need to have spayed, but I can't catch them.

_{Oh, come on! If I hadn't done it some "guest" would have.}

I just read the the thread....and you beat me to the punch line...I work with sprayers from time to time...works lousy on cats..

Yea, but I'll bet that initial air blast scares the hell outta them.

Short answer: HVLP spray guns have the cup inverted on the top of the handle to allow the paint mixture to gravity feed into the mixing nozzle.

Conventional spray guns have the paint cup suspended from the gun or have a hose leading to a remote paint pot.

HVLP guns were developed to lessen or reduce both consumption of paint to apply an acceptable finish and the paint booth concentration of VOCs. This allowed OSHA to develop safer standards for workplace conditions with the side benefit of limiting the quantity of VOCs released to the atmosphere.

Bob

Norm,

They make both a gravity feed and pressure feed in an HVLP spray gun, I assume you have the gravity feed if they were given to you. I can post a picture of one of my DeVilbiss Pressure Feed HVLPs if you think that would help.

I think yes, that may help, my guns are both definatley equipped with suction pots, vis they are mounted beneath the gunn.

Sorry,

Server is not accepting my downloads of pictures either.

If these have just one hookup for pressure hose, they are conventional guns. They should have two knobs on them, the upper smaller knob is to control spray pattern. The larger lower knob is to control the volume of material. These are typically used to spray solvent based material 40-65 psi and will not work well for water based paints.

The main differance is in the air cap design, an HVLP air cap will have larger holes in the cap, your air pressure should be set at min 10 psi at the air cap, some spray guns you can get the test cap, like the develvis gun I have it comes in a kit, I only use it for clear coat, an HVLP gun will also slow you down in the shop, but I can read the news paper in the finish when I'm done, put some pic up of your guns

Hey NA HVLP gun has the paint can on top that is gravity feed and the hi psi has the can on the btm that pressures up to push the paint out.

OK Guys, problem sorted, they had a sale on on at "Supercheap Auto" and I picked up a HVLP gun for $39-00 ..! but even at full price, spray guns are not that expensive. Anyway, moving on, my next problem is that I suffer from COPD, and so I have to be careful regarding what I breathe. I've made myself up a mask, with provision for an air connection. I intend to bleed air from the compressor but I was wondering if, despite having an oil/water separator, if I would still get an oil fume from the compressor coming thro ...?? I,ve priced a commercial Mask/Filter, but they are in excess of $500-00. Is there a way that I can make a filter that would remove any oil fume. Any ideas would be appreciated. Norm.

OK guys, Forget my last post, Ive just found out that breathing compressed air, CAN be dangerous, so I,ll have to think of something else...!!!! What about the outlet from a vacuum cleaner..?

Back in the old days when Imron was first invented painters would don a tyvek suit and wear a scuba tank with a full face respirator. I'm not sure I understand why you need a higher atmospheric pressure around your face.

The COPD part I understand and you should be careful to not directly be exposed to fumes but if the painting area is properly exhausted and with HVLP technique and with a proper respirator seal around you face, you should have very little problem with uncontrolled fumes.

Bob

Hi Guys, The painting is proceeding, albeit it slowly, I overcame the breathing problem, by erecting a tarp shade and spraying in the open air. The HVLP gun from "Supercheap" is great, as was the sandblasting device from the same place. so all in all, I am now on the right path. Thanks guys for all your help. Norm.