Bought it off ebay, realized I needed a 1/2 inch solenoid. It’s practically brand new. No-name brand but works great!
150 psi working pressure, 215 max pressure
20 bucks shipped anywhere in the US OBO
why not keep it and use it for a remote water purge vavle? Thats what I have…
thats actually a good idea, but i just got a water separator and i don’t want to run another line =P
weigh your options… run another line while you are under the vehicle, or crawl under and drain all the time… your call 
it is so nice to be able to purge my tanks from inside… about an extra hour worth of work (it was installed after everything else…) and now I don’t have to ever crawl under, loosen the drain cock, risk getting rusty water all over me or my clothes… WELL worth it…
Then you can also throw on an inexpensive horn like the psychoblasters and have another fun toy 
thats what i did at least
hmmmmmm