Cool a swamp cooler style type valve? Looks just like you could rebuild it from the guts of a new one from any of these? If'en you ever had too? http://www.mhparts.com/proddetail.php?prod=P-1169-2
I have been using this model for years now on my Morini. http://www.homedepot.com/p/DIAL-1-4-...4045/100175352
. It has been nice inhibited unclog-able high flow. Gets along with fuel perfectly. For about 4 years now. Never did play with the seals.
I like the way you got it. Right by the seat post to turn it on while coasting. I always forget to turn mine on lol.