The Fogatti RV Tankless Water Heater # LSB64FR does not require its own specific propane regulator. The Fogatti RV Tankless Water Heater # LSB64FR uses the already regulated propane that is entering the RV and needs a water column pressure of between 8-13, which you will get from a regulator like the MB Sturgis Horizontal 2-Stage Propane Regulator # 108221. view full answer...