Spray Gun Basic's

21 August, 2008 04:09:00 Don Johnson

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Spray gun basic info

Spray Guns

by Don Johnson

Sponsored by Airbrush Technique Magazine

This intended to be a brief over view of spray guns used in cutom painting, an introduction if you will. It's part of an article I wrote for www.airbrushartistmagazine.com actually.

There are two types of spray guns basically siphon feed or high pressure gun and the HVLP , which stands for high volume low pressure. Both types come in pressure pot, gravity feed or remote paint reservoir styles.

Spray guns unlike airbrushs require large volumes of compressed airto work correctly. Spray guns require a 5 horse power compressor with at least a 30 gallon air storage tank is adviseable. On the compressor you need the following. air pressure regulator,moisture trap, and oil filter.

As with most tools you can buy a cheap model or a quailty tool. How much you spend is of course up to you but if you plan on using the gun often I would suggest buying a quailty spray gun ( $400 and up ). You can buy one gun and by changing the head assemble and needle have the ability to spray many different types of productssuch as primier, base coats , clear coats. Be sure to check with the maunfacture's tech sheet for their recommendations in this reguard.

gravity feed style gun

High Volume Low Pressure HVLP
( pictured below) atomization utilizes a high volume of air delivered at 10 psi or less to atomize fluid material into a soft, low-velocity pattern. This reduction in the velocity of the airstream over the 40 to 70 psi typically delivered by conventional spray method results in a more controlled spray pattern, less bounce-back and enhanced transfer efficiency. Transfer efficiency can be defined as the amount of paint sprayed that goes onto the part as compared to the amount lost to overspray and bounceback. HVLP can be used with all automotive refinishing materials including primers, basecoats, clearcoats, and single stages.

Conventional High-pressure gun and how it works pictured below.

Copyrights :Airhead Airbrush.Com , Inc. Reserved No part of this tutorial may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, magnetic tape, mechanical or otherwise, without prior permission in writing from Airhead Airbrush. Com , Inc.

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