Ashtead Technology Rentals also supplies 1 and 2 stage regulators with the applicable CGA fitting. Examples include 330, 350, 580, 590, 660 and 705 CGA. Ashtead Technology has implemented Airgas’s best practices testing procedure; each regulator is pressurized, cleaned and re-tested before and after every rental. The best practices testing procedure guarantees a quality safe product free from interferences.