Gas cocks and Dirt traps

FOR SALE. Picture one is the complete dirt trap AK72A for 1909 -1914. I have the fatter 1915 version as well but can’t find them. Picture two is the Gas cock EK1094 for 1916 -17, later part number 3601-16. The one on the very right; I’m not so sure.

More dirt trap

The dirt trip query; this is how we learn. I have a 12 and 13 in currently so by holding the parts I purchased against the original part on the 13 I can determine which is which.I now have a 1915 Dirt trap for sale, although I could make it work on a tank with just one outlet.

photo (15) photo (17)