Bad regulator?

[ymurf]

I sprayed some epoxy primer last night with a new Performance tool HVLP Gravity feed gun from Orielys. It was only $100 so figured it would be fine for primers.Came with a 1.5 tip. Paint called out for 45 pounds to the gun and 7-10 at the tip. When I would get 45 pounds to the gun and then adjust regulator with trigger squeezed to 10 pounds when I let off the trigger it would only show about 25 pounds? Is my regulator bad? there was no way with regulator set to 10 pounds that I could get it to show 45 pounds when letting off the trigger.I even turned regulator up to 120 at compressor and still wouldnt work.Whats the problem and what should I do?

[Len]

I sprayed some epoxy primer last night with a new Performance tool HVLP Gravity feed gun from Orielys. It was only $100 so figured it would be fine for primers.Came with a 1.5 tip. Paint called out for 45 pounds to the gun and 7-10 at the tip. When I would get 45 pounds to the gun and then adjust regulator with trigger squeezed to 10 pounds when I let off the trigger it would only show about 25 pounds? Is my regulator bad? there was no way with regulator set to 10 pounds that I could get it to show 45 pounds when letting off the trigger.I even turned regulator up to 120 at compressor and still wouldnt work.Whats the problem and what should I do?

Did you watch the spray gun adjusting video at the top of the General Discussion forum?

You should be able to pull the trigger and adjust the inlet pressure to 45 lbs, you don't need to worry about the 10psi at the tip, that comes automatically.

[ymurf]

Did you watch the spray gun adjusting video at the top of the General Discussion forum?

You should be able to pull the trigger and adjust the inlet pressure to 45 lbs, you don't need to worry about the 10psi at the tip, that comes automatically.

I thought I needed 45# on the regulator with trigger not pressed and then squeeze trigger and adjust regulator at the gun to 10#? So I actually want to run regulator to 45# with trigger squeezed?
I better check out your video again.Maby thats where the orange peel came from.

[ymurf]

So please help me get this straight. The book I got with this gun says to start by setting inlet pressure to 40-45 P.S.I. The paint spec sheet for the epoxy primer has Application Equipment
􀂃 45-55 PSI
􀂃 HVLP: 7-10 PSI.

So am I correct that I leave my compressor turned up to around 100# or so and squeeze trigger on gun and set the pressure at the gun to 40-45#??
Where does the 7-10# come from?
Also my gun has an air volume control knob at the base of the handle,How do I set that??I appreciate any help you guys can give me before I start priming again today.

[Jayson M]

Yes,set your wall reg at 100psi,set the gauge at the gun with trigger pulled and air running through it at 40-45psi on the gauge.For the other reg in the handle leave it wide open.Don'worry about the 8-10psi at the cap,it is automatic when you adjust it by the gun makers recomended operating pressure.The only way to test it is with a special air cap with a gauge on it.Just set it and forget it

[ymurf]

Yes,set your wall reg at 100psi,set the gauge at the gun with trigger pulled and air running through it at 40-45psi on the gauge.For the other reg in the handle leave it wide open.Don'worry about the 8-10psi at the cap,it is automatic when you adjust it by the gun makers recomended operating pressure.The only way to test it is with a special air cap with a gauge on it.Just set it and forget it

Thanks for the response.I had that all wrong last night.Probably why I have some orange peel in my epoxy primer.Guess that will transfer into my single stage metallic..I have allot to learn before I start on my 68 mustang.This jeep may turn out so bad the wife may make me take the mustang some place to get painted.lol