You can get these fittings from McMaster Carr supply. You must order over the phone however. You cannot order them on line because it is not a normal stock size. If you've ever seen their catalog you will know how weird that is in itself!
Anyway the part number is 5478K71. That is the part # for a
Hi Pressure Chrome-Pltd Brass Quick-Conn Cplg. That part has the standard 1/4" NPT dry seal thread. You need one with a British Standard Pipe Thread BSPT. That is the same part number only with a different K listing that will denote a special order which is
5478K999. That is the part number you need to give them and state you need a BSPT. It is a standard item from their supplier Colder Products. Takes about three days to arrive, you don't need an account if paid with a credit card and the price is around $11.50 each. Might as well get two and replace them both. These are with the check valve in them too.
McMaster Carr
Click on the 'About Us' link for their closest office phone number to you.
[ This message was edited by: Stlakid on 2007-05-11 04:47 ]