This in line regulator works with both gas and liquid. More commonly with gas though. Will work with 0-150 psi.

The in line regulator comes with two 1/4" diameter brass barbs to hook up lines to. There are also mounting brackets should you choose to use them. Made of non corrosive acetyl, nitrile and stainless parts.

Simply adjust the the regulaor on the front like any regulator. A screw driver works well. Great gadget for serving two different beers at different pressures for an economical price.