Flame King 2-Stage Auto Changeover Propane Gas RV Regulator Kit with Two 12 in. Pigtails KT12ACR6 - The Home Depot
Amazon.com : Aekops Vertical 2 Stage Propane Regulator with POL Connection, Two Stage Propane Regulator Standard 3/8 Female NPT Connection, Double Stage Propane Regulator for Propane Tank, Gas Grill, RV : Patio,
Amazon.com : 5ft 2 Stage Propane Regulator with Hose and Gauge, QCC1 Low Pressure Two Stage Propane Regulator for Fire Pit, Turkey Fryer, Propane/LP Gas Grill, Heater, RV, Gas Stove/Range, 3/8" Female