Anyone damage low hung sewer valves and terminal end?

j-d wrote:
Are the builders doing what's cheaper, or trying to free up storage space?

Probably a little of both. :D
My Itasca 31C is a basement model with enclosed valves, but relatively limited OCCC of a little over 1,000#. My 31K which is about a foot longer than the 31C, with much smaller outside storage compartments, has exposed valves and a 3,275# OCCC. Granted 450# of the difference is in the GVWR differences of the two chassis, but still there is a sizable difference in the ratings.