as far as i know, every popup without a gray tank, just uses a regular garden hose to drain the sink into a bucket.
i used an old cut-down piece of garden hose with my two popups.
you didn't list the year but i don't know of any popup without a gray/black tank, that need a sewer hose.
you should have posted in the Tech section or the Tent Camper/Popup section.
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