I tried the minimum pressure, when the machine still working, and it was 0.2 MPa, but don`t work, still making foam. Other problem is, I can`t setup the exact amount of dosed gel, after 2-3 dose it changed, more then 5-8 %, and I need 100ml of product .Our main product is a gel, making from cellulose ether, 1%, rest is some plants ingredient aromas, colorants, etc water ad 100. I will try to make the gel more dense, maybe it work.