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So the Surflo diaphragm pump at 3 gpm would be too slow? It is a very cost effective pump at under a hundred bucks and pumps 150 to 200 gallons per hour gently. That is faster than the vacuum pumps and you can get it battery or AC.They have Viton seals and will pump chemicals, so wine is no problem. Morewine sells that one along with the faster more (lots more) expensive models.