scott

I'm using Clippard valves on all my tanks now and have found them to
be satisfactory. Models MNV-4K or MNV-3K should work for you. Their
flow to turn ratio are almost identical at the bottom end that you
will be working at. If you do order the valves don't forget to order
the 1/8" barb adapters to fit into the 10/32 threads.
Do a google search and you should be able to come up with a supplier
near you.

PS