If we attach an air pressure regulator to a single stage regulator (use it as an inline reg),
do we get the flow stability of 2-stage regulator and avoid end of tank dump?



They are not expensive. Most are small and light to ship.

http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_3573wt_782

http://cgi.ebay.com/SMC-AR2060-02-1-...ht_2430wt_1008