Iwata ws400 mod

Glen440

Promoted Users
I found a YouTube video where they lined up the holes in the air cap with the grooves in the nozzle. They claim it makes the ws400 spray the same as the ws400 series 2. You have to hold the gun a little sideways. It fixes the spray pattern wide open.

I tried it with mine. Its not out of alignment alot. I only tightened the nozzle a tiny bit and it made it line up. I think the gun sprayed wetter. More of the pattern landed wet. I also used it with the fan wide open. I played with all the nozzles at work, lph400 and ls400. They all end up in a different alignment. The gun body machining is different. The ls400 is the most out and opposite of the ws400. The lph400 was in perfect alignment on the ws400.

My ws400 does not have the messed up spray pattern wide open that most do. May be because it's almost lined up. I only put the fan in to speed it up.

I only got to try it on motorcycle parts so it's not a big test. I'm not in the booth everyday. Paint is only a small part of my job.
 
Interesting topic. Recently I watch a video on adjusting the Iwata LPH 400. The video was based on obtaining a perfect fan pattern and atomization.

Pressue at the gun regulator was set at 22psi. The fluid knob was turned out all the way, then a 1/4 turn back. The fan knob was turned all the way out. Then, looking at the gun pressure regulator , the fan knobs was turned slowly in until the air pressure increased slightly. It was like a 1/2 # more pressure.

There was a notable difference in the fan pattern compared to wide open, with more atomization.
 
Last edited:
I found a YouTube video where they lined up the holes in the air cap with the grooves in the nozzle. They claim it makes the ws400 spray the same as the ws400 series 2. You have to hold the gun a little sideways. It fixes the spray pattern wide open.

I tried it with mine. Its not out of alignment alot. I only tightened the nozzle a tiny bit and it made it line up. I think the gun sprayed wetter. More of the pattern landed wet. I also used it with the fan wide open. I played with all the nozzles at work, lph400 and ls400. They all end up in a different alignment. The gun body machining is different. The ls400 is the most out and opposite of the ws400. The lph400 was in perfect alignment on the ws400.

My ws400 does not have the messed up spray pattern wide open that most do. May be because it's almost lined up. I only put the fan in to speed it up.

I only got to try it on motorcycle parts so it's not a big test. I'm not in the booth everyday. Paint is only a small part of my job.
I saw the same video too. I would like to see if anyone has any feedback on the series 2 as one of them flows a lot of material per the charts provided. Chart shows it flowing more material than the LPH or the Super Nova.
 
IWATA Iformation on Series 2 Look at the fluid output

1679871538306.png
 
Interesting topic. Recently I watch a video on adjusting the Iwata LPH 400. The video was based on obtaining a perfect fan pattern and atomization.

Pressue at the gun regulator was set at 22psi. The fluid knob was turned out all the way, then a 1/4 turn back. The fan knob was turned all the way out. Then, looking at the gun pressure regulator , the fan knobs was turned slowly in until the air pressure increased slightly. It was like a 1/2 # more pressure.

There was a notable difference in the fan pattern compared to wide open, with more atomization.
Ive seen the same or a similar video...In the video i saw, the person said setting up the gun like that((but you can start with any pressure), will give you best results for clear..
 
Back
Top