Keg Calibration App

This is for professional and home systems alike which are using brewery approved beer lines (or stainless steel beverage tubing) and the beer is maintained at 36F to 40F with CO2 as the gas.

Note: If you are trying to use the cheap hose from hardware and home brewing stores forget about serving a proper draft beer.

The pressure you set on the beer regulator gauge must be set equal to the calculated pounds of resistance from the keg connector to the faucet. The pounds of resistance in the beer line is calculated in the formula below. The ideal target pressure for your regulator setting is given in the table below. Pressure should never be set below 12 psi on the gauge in order to have a beer faucet work properly.

Compute the regulator setting (gauge) pressure by
Pg = L1 * R1 + L2 * R2 + L3 * R3 + H * 0.5
where:
Pg = pressure to be set on regulator gauge by adjusting the adjusting screw or know on the regulator.
L1 = length of beer line1 in feet
R1 = Resistance of line1 from Resistance Table below.
L2 = length of beer line2 in feet
R2 = Resistance of line2 from Resistance Table below.
L3 = length of beer line3 in feet
R3 = Resistance of line3 from Resistance Table below.
H = Total height from the center of the keg to faucet in feet

Beer Line Resistance Resistance given here is for use with carbonated beers for the balance instructions above. Pressure drop in lines depend on setting the proper flow rate, the hose manufacturer and the materials used. Splicers will have little effect on pressure drop if only one is used to trim a system. Every hose will vary with temperature and age.
Line (inches)	Min Resistance (pounds/foot)	Max Resistance (pounds/foot)	Resistance used In Examples (pounds/foot)	Volume/foot (ounces)
3/16" I.D. plastic beer line	1.800	2.700	2.700	0.167
1/4" I.D. plastic beer line	0.400	0.850	0.700	0.333
5/16" I.D. plastic beer line	0.100	0.200	0.170	0.750
3/8" I.D. plastic beer line	0.090	0.150	0.110	0.750
1/2" I.D. plastic beer line	0.025	0.030	0.025	1.333
1/4"O.D. Stainless Beverage Tubing	0.400	0.850	n/a	0.333
5/16" O.D. Stainless Beverage Tubing	0.100	0.200	n/a	0.750
3/8" O.D. Stainless Beverage Tubing	0.090	0.150	n/a	0.750

Input line length values in feet for each line separated by commas(",")		example: 1,2,3,4 (numeric values only, can be decimal values)

Input resistance in pounds per square inch (psi) from table for each line separated by commas(",")		example: 1.2,2.3,3.4,4.5 (numeric values only, can be decimal values)

Input the total height in feet from the center of the keg to faucet in feet		example: 3 (numeric value only, can be decimal value)

Beer Line Resistance