| What regulator should I use with my gas standard? We offer five regulators for our gas standards. Capabilities and applications are summarized in the table below: | Catalog # | CGA fitting | Pressure (psig) | Features | | 21572 | 180 | 0 - 30 | Stainless steel, single stage regulator generally used with TO standards in 6A-type cylinders. | | 21572-R100 | 180 | 0 - 100 | Stainless steel, single stage regulator generally used with TO standards in 6A-type cylinders. | | 22032 | 170 | 0 - 15 | Brass, single stage regulator used with natural gas or refinery gas standards in CC-1L type cylinders. | | 22690 | 160 | 2 - 10 | Brass, single stage regulator generally used with pure gas standards in Scott 14-liter transportable cylinders. | | 22691 | 165 | 2 - 10 | Brass, single stage regulator generally used with pure gas standards in Scott 48-liter transportable cylinders. | | |
