Fisher's automatic conversion regulator automatically switches from supply cylinders to reserve cylinders (when gas is exhausted). Fisher's Model 749B regulator is a high-flow conversion manifold designed for commercial and industrial applications. It consists of two 64 series voltage regulators and type 803 through indicators. The assembly is mainly used with HSRL or 64SR type voltage regulator.
Characteristics and advantages
Large flow
UL Certification (Type 749B, two voltage regulator separate certification)
