No pumps with mixed gas?

[Divinity Draft]

does the higher pressure setting associated with mixed gas eliminate the need for beer pumps? A customer's remote system has pumps running about 120 ft. Pressures are about 20-25 PSI. Would using beer gas be enough to propel the beer to the faucets? (assuming the NO2 would not be absorbed into the beer). Am I correct in assuming that with applied pressure of mixed gas(60% CO2/ 40% NO2) @ 23 PSI , it would be equal to using 13.8 PSI of CO2 only? The customer would love to get rid of the pumps; He's missing a few anyways. Any clarification would help tremendously. Thanks!
-Daniel Hardin
Divinity Draft Service

[Scott Zuhse]

Yes indeed! Be aware that the system may have additional restriction build in the tower end of the system to accommodate the pumps. Bypass a pump and apply 22- 23 PSIG to the keg. Perform a flow speed test at the faucet measuring the amount of beer dispensed in 15 seconds. multiply ounces by four for your flow speed per min.

If you are in the 120 oz. / min. range - perfect. If slower, you may be able to adjust the PSIG to the keg higher to increase flow speed without varying the blend ratio. If your flow speed is too fast, you may require additional restriction at the tower. Get rid of the pumps.

[Divinity Draft]

Scott,
You've come through again my friend: your expert advice is always so accurate and to the point. Thanks for all that you do on this forum
-Daniel Hardin
Divinity Draft Service

[Scott Zuhse]

All in the interest of enjoying great draught beer - regardless of brand or origin!