Does it really matter what gas and pressure I use on my beer kegs?

Absolutely! The correct gas mix and gas pressures will dictate the profitability of your draught beer system. Improper gas types or mixes and incorrect gas pressures will cause undesirable outcomes including over-carbonation, foamy beer, flat beer and general customer dissatisfaction.

In most situations tuning a draught beer system to 2 oz per second at the beer faucet is a base line to start with.Adjust keg pressure such that a 16 oz pint is filled in 7-9 seconds. Generally speaking this will give you the correct keg pressure.

That gauge pressure can then be used to determine the correct gas blend. Call GAS for assistance anytime!


Is the mix of 70% CO2/30% nitrogen right for my beer?

Not unless you have exactly 24 pounds of keg pressure and your keg cooler keeps a 38F beer temperature. In reality no one blend is correct for all draught beer system conditions.

The correct method for blend calculation is tuning the blend to the given draught system’s conditions i.e. Keg temp, keg pressure and beer type

We invite these conversations and really enjoy having them!

Please call us anytime to talk draught beer quality!


Is the mix of 25% CO2/75% nitrogen right for my non-stout beers?

While 25% CO2 is perfect for your stout creamed beers it is absolutely not acceptable for any normal ale or lager type of beer. The result will be under carbonated or flat beer.

The perfect ratio of CO2/ nitrogen is customized for your exact draught beer system. Typically 50-85% CO2 will be the range for most long draw beer keg systems. Each beer system has its own ideal mix ratio to deliver the perfect pint. Green Air Supply’s Beer Quality Experts can calculate your ideal gas mix and assist you in how to increase your draught beer system profits.

Why should I use a nitrogen separator over changing, ordering and storing cylinders?

Simple! Nitrogen Separators provide perfectly carbonated beer and wine for greater beverage profit and quality. GAS Separators also offer a much less carbon intensive means to deliver nitrogen for beer and wine dispense systems. Separators provide hands-free operation and customized gas blends for all types of keg dispense systems. Perfect Pints equal maximum profit!

Are any City or State permits necessary for a GAS Nitrogen Separtor?

No city or state permits are necessary at this time but electrical safety certification markings are always required! Green Air Supply is one of the very few separator manufacturers with all appropriate safety markings in the industry. In most states these safety markings are the law. Please contact our office for more details.

How long does an average installation of a Green Air Supply Separator take?

Depending on specific installation conditions and exact configuration, the average installation time can vary from 2-4 hours with no down time of any draught beer service.

Can I request to be billed via electronic transaction?

Definitely! Green Air Supply offers many payment and billing options. Please contact our accounting office at 877-427-4361 with your requests.

Is Green Air Supply Inc an established and local supplier of Nitrogen Separators?

The industry’s best nitrogen separators are proudly manufactured in Tacoma, WA. Green Air Supply has serviced the draught beer industry for the last 8-years. Our head office is based locally and our staff and their families are patrons at many of the restaurants and pubs we service. Unlike out-of-state competitors, with Green Air Supply, your money stays in the area and is reinvested back into our local economy.

What types of other leak detection tools are available?

CO2 alarms are a great tool to warn of high CO2 accumulations in a confined space. The typical CO2 alarm installation includes a CO2 sensing probe (installed in the confined space) and a control unit which displays the current CO2 level (installed just outside of the confined space being monitored). An audible alarm and visual indicator will warn of high CO2 levels from a safe place before entry into the confined space.

Another type of leak detection tool are the in-line flow meters for gas flow monitoring. As always, the active monitoring in CO2 level alarms are far superior to the passive leak detection of balls floating inside of flow meters. If you have this type of leak detection currently (tiny floating ball inside of a plastic tube) be aware that this type of leak detection is ineffective at monitoring safe work conditions.  We recommend active monitoring of CO2 levels over passive leak detection to our customers. GAS can advise you on the cost and supply of every leak detection option available.

I may want to obtain a CO2 alarm for safety concerns. Where can I get one at?

Green Air Supply will gladly assist you in sourcing a CO2 alarm. Green Air Supply is your partner in providing your employees with a safer work environment.