ULS Air Assist CFM Rate

Hi All,

We have a VLS 4.60 and we're having to replace our air assist source. The manual states 3.5CFM @ 50PSI but we normally run it at 10-15PSI. 3.5CFM just seems extremely high to me, I know it blows air on the mirrors and sorts but it still doesn't feel like it's draining 3.5CFM.

Has anyone actually taken a valve and measured the CFM drain rate on their air source when the laser is going? I'm betting it's closer to 0.25-1 CFM but I could be horribly mistaken it's hard to judge.

Cheers,
Robert

I have to correct my original post, ULS states 2.5 CFM @ 50 PSI not 3.5.

Anyways, I did an unscientific test using a loaner compressor we have and turns out @ 10 PSI on the machine gauge it does actually drain about 2-2.5CFM as the 1.77 CFM this compressor is rated for cannot keep up.

Actually, both the 2.5CFM and 50PSI sound high to me, given the tiny tubing and orifice on the ULS air-assist plumbing. You might need that volume for the air-sweep attachment, but the pressure still sounds higher than necessary.
(Full disclosure: I don't use air-assist on my ULS.)