plumbing - Do dishwashers with a built in "high loop" require a second high loop under the sink? - Home Improvement Stack Exchange
How to Make Dishwasher Drain Hose Connections
Is this dishwasher drain's high loop steep enough..I know the line jots upward a little towards the end, but I can't imagine this to cause backflow to appliance...does that seem correct/OK? :
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Dishwasher drains: mind the high loop
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What did the plumber doing repairs at my house mean when he said he had to make a 'high loop' so the new dishwasher would work properly? - Quora
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