This RV propane automatic changeover regulator measures approximately 6 1/4" by 3 7/8" by 3 1/2" and is for use on RVs or trailers with dual propane tanks.
The function of this regulator is to automatically switch from the primary LP tank to the reserve tank when the primary tank is empty, allowing for the removal of the empty propane cylinder without interrupting the propane supply.
Double stage design maintains constant gas pressure under changing demands and conditions