My upflush unit uses a 3/4" or 1" pvc pipe for pumped discharge. They also say that I should limit the use of 90 degree elbows so should I use 45's or sweep 90"s? Are 2 45"s better or worse than 1 sweep elbow. Also, do you know if the code will allows a flexible "Enviro-Flex" flexible pvc pipe for the bends? Thanks

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