To use a 90 deg gas valve in my Black 5 it just so easy and so many regulators leak and unreliable.
I had heard others who had used them saying how reliable they where but never new how they could be used.
With this one its just so easy as a 1/4 rod with a groove in to sit the end on the tap once plastic removed.
Then one end with a 10mm Brass tube going to the Super heater.
The other is the feed pipe going up.
what could be simpler and more reliable plus at £5.99 if ever it did go wrong easy to change and cheap.
This was the best Idea that suits me totally i am more for reliability than keeping to stead and hard drawings as i wasn't to use it on a regular basses.
I hope this helps others as much as it has helped me.
Ron