Venturi dredge pump10/16/2023 Finally, the kinetic energy of this system is so high that it is more easily able to self-prime and remain clog-free.Īssemble a PVC pipe fixture starting with two-inch diameter Schedule 40 PVC pipe and fittings. Second, the high energy stream is able to disintegrate whatever solids there are in the Venturi and the downstream pipe line. First, the ratio of volume of powering water to water ejected from the pump is much lower, bringing greater effectiveness and efficiency. This system has a much lower flow, but a much higher kinetic energy to inject into the Venturi, which serves several purposes. The trick with this system is that it uses an extremely high-pressure stream from a pressure washer to drive the Venturi pump. These units use a lot of clean water to move the entrained liquid, however, with many requiring at least one gallon per minute to entrain two gallons of waste liquid, for a sum total of three gallons ejected from the end of the pump. The kinetic energy of the higher-speed stream is imparted to the mixture of the entrained liquid and propelling liquid, and is proportional to the mass of the mixture. Many back up sump-pumps use the Venturi principle where a pressurized flow stream of utility water is directed into the throat of a converging Venturi, where it induces a partial vacuum that then draws water to fill the void.
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