My freshwater drain came with a valve like this one, from the factory. I like it cause if I lost the cap driving down the road, no big deal.
http://www.escousa.net/cgi-bin/miva?...tegory_Code=V1
So i ordered 2 more for my low point drains. They were an exact match. Its basically like a compression fitting. I uninstalled the old low point couplings and replaced with theses new valves. I also replaced the last nut with the old cap, so its double stopped?
