Measuring pressure at the cap?

[solex3274]

Many spec. sheets refer to air pressure at the gun tip. How do you measure this pressure? I can see what the pressure is going in to the spray gun, but how much is actually coming out?

Do I refer to the inlet pressure and simply factor in a loss?

[962porsche]

well at the cap that would be the best way to know what the air pressure is . but most people don't have the air caps with a gauge . even when you do you can't spray with them ! most guns like about 10 lbs at the tips . that would be about 26 to 28 lbs coming in to the gun . and yes the gun has a prussure loss from the inlet to cap . you did not state what gun your using or if your air lines , couplers and fittings are also HVLP ? if not they should be or the gun will not spray as it should .

[solex3274]

Thanks for the advice, I am using a HVLP gun. I was not aware of the need to use HVLP fittings however, it appears that there is more air air loss with just standard fittings.