Perlick carbon Dioxide/Nitrogen Flashcards
Characteristics of CO2 in a CO2 tank?
The CO2 used to push drought here through a drought your system is usually supply from a CO2 tank
Use of CO2 in a draft beer system
Because CO2 is the primary gas in the beer we use CO2 to push the beer out of the keg through the beer lines and out of the faucet this assure us that we maintain the proper amount of CO2 in the beer and maintain its brewery fresh flavor one serve to the customer
What is the CO2 ratio of liquid verse gas in the tank?
When the tank is filled it is about one half full of liquid CO2 with the upper one half of the tank filled being CO2 gas
What type of CO2 gas should be used on draft for your systems
Gas use for draft dispense should be beverage grade retailers may purchase this gas in cylinders that will be delivered by the gas vendor and swap out one empty slots cylinders are filled maintained and inspected by the vendor
Which gases to use in a draft beer system
Short draft beer system usually uses pure CO2 or straight nitrogen if it is a nitro beer to push the beer through the system as we will see you later many accounts of long draws will need to use a blend of CO2 and nitrogen or straight nitrogen it is a nitro beer to provide enough pressure to push the beer through the lines without over carbonating the beer.
How to measure CO2
CO2 is measured by the number of pounds of liquid CO2 put in the tank the common sized tank are 5 pounds 10 pounds 20 pounds and 100 pounds
Each pound of CO2 will push 12 one half barrels of beer through a draft system
Example: A 20 pound tank pushes approximately 20 to 30 half barrel kegs
What is the CO2 and nitrogen tank Safety relief valve
CO2 and nitrogen tanks both are equipped with safety relief valve’s that will open and then the tanks contents if the tank is overfilled or stored up in an extremely hot temperature.
The tank safety relief valve is located on the tank neck just below the shut off valve the safety relief valve is designed to release the pressure of the tank instead of bursting the tank
The proper CO2 pressure setting for each brand of beer is dependent upon the what
The pressure at which the beer was packaged the altitude of the retail account in which the beer is being served and the temperature of the beer
Because a full tank of CO2 is under such high pressure how must to be handled
Always connect the CO2 cylinder to a regulator otherwise you’ll be releasing 600 pounds directly to the keg
Always secure the CO2 tank in a vertical position with a safety chains or CO2 tank. This will prevent the tank from falling over and allowing the liquid CO2 to seep into the regulator and gauges thus causing damage
Keep the CO2 tank out of the cooler if the tank is stored in the cooler the CO2 gas may liquefy which will reduce the usable pressure keep tank at room temperature for maximum efficiency and safety
What is a CO2 pressure regulator
Hey regulator adjust and controls the flow of gas from any source
What are the two types of regulators
The dual regulator typically contains two cages one high pressure gauge showing the tank or supply pressure and a secondary low or regulated low pressure gauge showing the pressure being delivered from the regulator
Some simpler regulators may only contained one gauge displaying the delivered low pressure single gauge primary CO2 regulators make it more difficult to predict when the bottle is getting low on CO2
What are the two types of CO2 lines
The vinyl CO2 line
5/16 ID vinyl CO2 wine/beer line is typically used on the low side of the primary regulator it is not recommended for use on pressures of more than 35 pounds if you need more than 35 pounds a braided CO2 line is recommend.
Braided CO2 line
For systems that run from 35 to 100 pounds use braided CO2 line to prevent damage only use a braided line that is safe at these pressures
Explain kegs in series
Many high-volume accounts connect their kegs and I series chain to meet Peak capacity demands. putting kegs in series allows 2, 3 or up to 10 kegs of the same product to empty without having to retap after each keg empties the kegs in the series are named as follows CO2 to gas keg to intermediate keg to faucet keg
Explain nitrogen
At room temperature the nitrogen and a nitrogen tank is a gas unlike CO2 and nitrogen is an I nursed gas so it does not penetrate and does not over carbonate the beer
