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Flame King 2 Stage Auto Propane Gas Regulator with Pls Cover & Long Mount Bracket & 2-12″ Pigtails


  • Allows removal of the empty cylinder for refill without interrupting propane supply; includes 2 of the 12-inch pigtails to connect the regulator to the propane tank or propane supply
  • For RVs with dual propane tanks; it automatically switches from primary to reserve tank when the primary tank is empty
  • Pairs well with our 48 Inch Thermo Plastic Hose, item 100383-48
  • Inlets are 1/4" SAE inverted flare and outlet is 3/8" NPT female pipe thread; rated for 345,200 BTU
  • Double-stage design maintains constant gas pressure under changing demand and conditions
Out of stock
SKU: KT12ACR6N/AAvailability : In StockIn StockOut of stock

Please read below instructions or watch our video Below


  1. Turn the Lever towards a tank.
  2. If there is propane in the tank, the indicator will go clear.
  3. Propane will begin to flow from this tank ONLY through the regulator and to the appliances.
  4. When the tank runs out of propane, the indicator will show RED and the regulator will automatically switch over to pulling propane from the other tank.
  5. Rotate the lever to the other side and the indicator will go clear again.
  6. This will allow you to remove the empty tank and get it refilled.
  7. Propane will flow from the second one while you get the first one refilled.


Flame KIng 2 Stage Changeover Regulator


Weight: 2.6 lb
Dimensions: 7 x 4 x 4 inches
Regulator is factory set at 11wc (water column)

Click HERE for the Product Manual

Customer Reviews

Based on 435 reviews

They recommend this to me for the tanks. and they will not work on the propane tanks. I have to buy adapters for them. Which is an extra cost that I could have diverted.

charlie h.
Works great

Great value

Glenn Archer
Plastic nut cracked

My photo looks like a few others in the reviews, the plastic nut cracked. Only made it for 8 months. I also had some difficulty swapping tanks using the switch but it's the first time I used that feature so I may have done something wrong, though it seems like a simple thing...

Robert Craig

It fixed the problem on my propane tanks

Oscar cervantes
Great price

I bought this to replace the original one from my travel trailer since it was leaking .works great. Good price in comparison to others in the market.

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