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Well like Remi said above, the gulper is a simple mechanism that is doing great in urban settings. It can do what trucks can do save for the manual usage establishment. I am a proud gulprenuer that has only been in business since late September but the only time of service has been on the valve which was done free. Haven't had issues worth disposing it. I hope to see how much longer it will work.
P.S. I am using the Gulper 1.