We've ran into a couple of the BLM 2000's here in our market. I'm not saying they don't work, but I give every bar owner the chance to see for themselves.
We take in a bronco pump and pour 7-10 ounces directly from the keg into a glass. Then hook the keg back up and pour another 7-10 ounces into a different glass from the same keg through their BLM lines out of their faucet at the bar. We show the bar owner the clarity difference between the two glasses.
If you are going to do this, shut off the pressure going into the keg, pull the pin till almost all of the gas is gone, then attach the bronco pump, but don't pump it. If you do, you'll contaminate the keg with air. Once we hook it back up, turn on the air and once the coupler is engaged, the keg will fill back up with gas.
There is no substitute for an electric re-circulating pump.
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