What about drip line irrigation connections, don't know but wondering if that could be a possible solution. I need a 90 degree elbow for a line I have to mount a clover shaped sponge filter - vertically instead of horizontally, that's what I will be looking for next as lfs don't have any.
It's a tempting thought! It would be very close to being right size. I think I have some in the shed to have a look at.
I think I now have:
2 x inline needle valves on way (to go with brewing kit brass splitter that doesn't fit co2 airline ).
1 x splitter with needle valves on way from UK (fingers crossed!)
2 x cheap inline splitters with needle valves on way (backup).
So tempted to just 'try out' the second tunze reactor tonight and make sure it all works. Then just plug in splitter when finally sorted or maybe garden connections would work with clamps.
The working tunze reacted has had the flow control removed as it was doing funny things and I want to run them flat out. So could just try that.