Well since I purchase a Regman regulator .. I been seeing this at Ebay... they come in different pressures settings but they are a few high pressure ones like this one I might assume they will need new orings but at $350 dollars cheaper .. I would have give it a try if I have not purchased one...this tipe of regulator is not new it has been used for years in hospitals to regulate the pressure from the 4,000 n 5,000 psi oxygen tanks for breading air lines..in the walls....this one is like $75 + $20 shipping..something like that..