That is a 914 pump. I sold mine for 100 bucks. They show up on Ebay from time to time and sell for 75 to 150 give or take. I'm currently using a 910 pump for floats. Those show up less often and go for 200 or so.
Bill
These are available in 1/8"NPT at your local Aircraft Components Enterprises. If they don't stock them smaller than 1/4", they will order them for you. I use them for parking brake valves.
Here is one on eBay now.