if you are g0ing to do it, do it right, put a 90 degree male/female elbow in the casting and then a Doughty (might be Dowty) male threaded coupling, self seals, no levers or bell cranks, then get the male portion and about 18" of hose, Bob's your fathers brother. push the male portion into the coupling female and oil will piss out of the hose faster than you can get it in a bucket, cost about a tenner (or 11.273.5 Euros)can will hold 1000's psi as it is for hydrauilc quick connections. best places for Joe public to buy would be an agricutural merchant. Every hydraulic machine fitted onto a tractor three point linkeage will have the female (sometimes up to four) on the tractor and the flex pipes will have the mail, eg tiping trailer, hedge cutter, log splitter, Jota crusher, power harrow etc.
CLEM