HFS (R) Commercial CO2 Regulator - Beer Brewing Kegerator Dual Gauge Shutoff Valve (1 Product) The HFS Commercial CO2 Regulator works with any CO2 Tank with a CGA-320 valve, and measures both the PSI to your keg and the volume of CO2 gas in your cylinder so you know when it's getting low. Constructed of chrome plated brass, this regulator features a tool-less adjustable flow to your keg, with a 0-60PSI gauge for perfect accuracy. Also featured are a auto-resetting safety release valve, a tank pressure gauge, integrated nylon tank connection washer (with spare), output ball valve shut-off, and a sintered brass inlet filter. Output to a 5/16" barbed fitting, which can be removed to expose a 1/4"NPT threaded connection if you'd like to use other adapters. Automatic Safety PRV