Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers
Condition: New
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Availability:
In Stock.
Arrives
Tuesday, Sep 29
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Size: Regulator with 12-inch Pigtails
Features
- 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
- UL Listed Regulator, inlets are 1/4" SAE inverted flare and the outlet is 3/8" NPT female pipe thread; rated for 345,200 BTU
- Pairs well with our 48-inch thermoplastic hose; regulator is factory set at 11WC (water column)
- Double-stage design maintains constant gas pressure under changing demand and conditions
Description
The Auto-Changeover LP Regulator allows you to hook up 2 Propane tanks and the regulator automatically switches over to the second tank once the first one runs out (and vice versa). The indicator changes color to let you know when a tank has been depleted and needs to be refilled. The inlet is a 1/4" SAE inverted flare and the outlet is a 3/8" NPT female. Also included are 2 of the 12" pigtails to connect the regulator to the propane tank or propane supply.
Manufacturer: Flame King
Brand: Flame King
Model: KT12ACR-2a
Item Weight: 2.4 pounds
Product Dimensions: 7 x 4 x 4 inches
Item model number: KT12ACR-2a
Exterior: Machined
Manufacturer Part Number: KT12ACR-2a
Date First Available: March 4, 2021
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Sep 29
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: Regulator with 15-inch Pigtails
AA++
Reviewed in the United States on September 8, 2026 by tennis
Size: Regulator with 12-inch Pigtails
It could not have easier to replace my regulator on my RV! I had a propane leak a few weeks ago on my RV. I did the leak test with soapy water and found the fitting where the hose attaches to the propane bottle had a leak on one of my propane tanks. I decided to just replace the hoses on both of my tanks/regulator. When I bought the 2 hoses, I decided to buy a gas leak detector to check all my other propane items (grill, griddle, etc.). Not only did I have a leak again in BOTH hoses, I had a leak on my regulator as well. I decided to buy this regulator with both hoses already attached and it works like a charm! Perfect fit! Very easy installation! The hoses seem to be good quality as well as the regulator. I think Flame King should include in this kit a small spool of yellow propane PTFE tape (everyone has the white teflon tape, but DO NOT use it for propane!!!)) to install the regulator on the main propane gas line....that was my only downside for the DIY's. Other than no PTFE tape, I'm very satisfied.
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Reviewed in the United States on December 26, 2025 by F. Smith
Size: Regulator with 12-inch Pigtails
Here in Utah they turn the power off at random times whenever they feel like it so having a backup generator is mandatory. I have two of these changeover valves and run one on each of two generators. We never run out of propane that way. These are basically flawless. They always work and I've never had a problem with either of them.
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Reviewed in the United States on September 3, 2026 by Dave
Size: Regulator with 12-inch Pigtails
Less than 7 months and BOTH pigtails have disintegrated, cracked & connections are crumbling. Very poor quality pigtails. Time will tell regarding the regulator itself but so far, so good on that.
Reviewed in the United States on June 23, 2025 by Amazon Customer
Size: Regulator with 12-inch Pigtails
Jayco put a recall on the one that came with our RV, and wanted me to tow my 8000lb rv back to dealer to be repared. I changed it myself. It was cheaper than trip to dealer.
Reviewed in the United States on September 3, 2026 by Linda Alosi
Size: Regulator with 12-inch Pigtails
Came as advertised. Quality looks good. Just installed - No leaks. Transfer capabilities and indication work well.
Reviewed in the United States on August 27, 2026 by Ray Moore
Size: Regulator with 12-inch Pigtails
Used this last year around July, worked fine until my first trip out after winter this week. Not sure what has happened, but I think it’s leaking internally. I kept getting whiff’s of propane. I used an entire bottle of soapy water and just couldn’t find it leaking anywhere. So I ignored it, come morning the entire bottle was empty. I ran the heater, so I thought okay maybe it uses that much. That was a first also. So I switched it to the other tank. Warmed up outside and only used it to cook with twice. Woke up the following morning, another empty bottle. I used another bottle of soapy water and looked and looked, couldn’t even see any bubbles anywhere. But I could physically hear the propane (what sounded like leaking) if I put my ear close to the regulator. All I know is I’m far from any place that could sell me a replacement regulator. This one is obviously defective and I just went through two brand new full bottles of propane. I went with flame king because I thought it was superior to the Chinese made one. But I came out highly disappointed and unsatisfied.
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Reviewed in the United States on March 18, 2026 by Brandon
Size: Regulator with 12-inch Pigtails
Easy to install
Reviewed in the United States on May 31, 2026 by Amazon Customer