I have a brand new set of brass McMaster-Carr Quick Disconnects for sale. $50 + shipping. 6 90 deg. connections and 4 straight connections. Each connector is 1/2" MPT and barbed connection. Connectors have never been used.
http://www.flickr.com/photos/59734146@N06/5460354085/
http://www.flickr.com/photos/59734146@N06/5460354085/