I agree, the fresh water tank drain valve is way too small. If you sanitize your tank once a year you'll soon get fed up watching the grass grow - and you don't want to dump the water+chlorine mix on the road or down a drain that leads to a stream!
Enrico and Donna + 2 kids
RAM 2500 + Jayco Jay Flight 25BHS
Black tank Quick-e Flush, MaxxAir Vent cover, TV bracket and LCD TV, added Slideout awning, bunk ladder, added socket and reading light to top bunk, added bathroom fan switch near light switch, insulated all externally accessible storage, sealed pass through storage from interior of trailer, LED lights throughout, added LED lights to storage compartments