Amazon.com: Maxitrol RV48L Natural Gas Pressure Regulator, 1/2" FPT Thread, 13/16" In and Out Opening, 1/2 PSIG In, 3"-6" WC Out : Industrial & Scientific
RV48L-3/4-48-Maxitrol RV48L-3/4-48 3/4" Regulator With Integral Vent Limiting Orifice - Industrial Stores
Amazon.com: Maxitrol RV48L Natural Gas Pressure Regulator, 1/2" FPT Thread, 13/16" In and Out Opening, 1/2 PSIG In, 3"-6" WC Out : Industrial & Scientific