We have three different types of 50 psi pressure regulators for all your anesthesia needs.  The E-Tank model is used when small tanks are required (sizes “D” or “E”) as emergency backup and portable use needs.  We have two types of large tank regulators (size “K” or equivalent).   The first is a one stage regulator, which is used in most large tank applications.  The second is a two-stage regulator which provides heightened accuracy in pressure control.