Inquiring minds have to know.. who sells the same valve that is not "Marine" designated?
Seems to me, at even $175 bucks, it's cheaper than the Stealership Ferd part that has reliability issues.
Been using manual fuel valves in airplanes for about 50 years now.. never had one fail yet... [fingers crossed, now that I've said that.. hope I have not angered the aviation gods]
I can see having one of these and two fuel gages with on / off switches to read fuel quantity when I wanted, or all the time. [Hell, at fuel prices these days.. I want to watch the gage even on the unused tank.. hahaa.