Flame King KT18ACR-2 2-Stage Auto Changeover LP Propane Gas Regulator with Two 18-inch Pigtails for RVs, Vans, Trailers
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Availability:
In Stock.
Arrives
Sep 10 – Sep 14
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Size: 18-inch Pigtails
Features
- Allows removal of the empty cylinder for refill without interrupting propane supply; includes 2 of the 18-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. 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 pigtails to connect the regulator to the propane tank or propane supply. Auto Changeover Regulator Auto Changeover Regulator Auto Changeover Regulator 300K BTU Regulator w/ POL 160K BTU Regulator w/ POL 160K BTU Regulator 300K BTU Regulator
Manufacturer: Flame King
Brand: Flame King
Model: KT18ACR-2
Item Weight: 2.43 pounds
Product Dimensions: 2 x 5 x 6 inches
Item model number: KT18ACR-2
Manufacturer Part Number: KT18ACR-2
Date First Available: May 10, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sep 10 – Sep 14
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 12-inch Pigtails
This propane gas regulator works very well and feels sturdy and well made. Installation was straightforward, the connections fit securely, and it provides a consistent gas flow. It was a great replacement and has worked reliably. Very satisfied with the quality and performance
Reviewed in the United States on August 8, 2026 by Adrián Lechuga
Size: 12-inch Pigtails
This is the second time I had to replace the regulator on my 2017 travel trailer. The first time was because of the mass recall. I had to figure out the regulator I needed based on total BTUs, figure out the length of pigtails and ensure the handles were the color I needed (dark green for most trailers), find / buy a bracket to mount the regulator to so it would stay on the holder, figure out the right self-tapping screws to get to mount the regulator to the bracket, and then get Teflon tape rated for propane. After all that work, and spending a lot more money than I did on this one, that regulator didn't last. So I found this one. Affordable. 12" pigtails with dark green handles. Bracket included. Auto-switching. Empty tank indicator. Enough BTU throughput to handle my trailer twice over. I changed the regulator out in less than 5 minutes and then tested it. The step that took the longest was cleaning the old Teflon tape off the threads. Easy. This regulator works like a champ. Thanks.
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Reviewed in the United States on November 9, 2024 by WW
Size: 12-inch Pigtails
Easy install and worked as intended replacing my 10 year OEM valve.
Reviewed in the United States on July 29, 2026 by Amazon Customer
Size: 12-inch Pigtails
I now have installed the second one of these, as the first arrived malfunctioning and with one valve cracked. The second one works. It was easy to install. The tank changeover indicator is supposed to be clear when there is propane in both tanks, and then switch to red when the first tank has emptied. While the red of empty seems pretty obvious now, the clear color never was really clear. It was clear with red streaks, or with partial red even with full tanks. So, until I had played with it a while, I wasn't clear what that meant. Ultimately, if the indicator is fully red, the first tank is empty. I'm convinced that anything else means you still have gas in the indicated tank, and that you can't use "a little red" to suggest that your tank is running lower pressures. The other thing to know is that you must open the valves on the tanks slowly. Otherwise, the regulator will also show red from too much pressure. I don't know if it actually turns off that tank, but your indicator won't show you the true status of the tank. In summary, this works pretty well, but is definitely more nuanced than the one that it replaces. I suspect I'll adjust to it fine, but it took a while to figure out the interpretation of the indicator.
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Reviewed in the United States on June 26, 2024 by Traveler
Size: 12-inch Pigtails
First one had a leak, it was past warranty date, I explained to seller that I used right side first, then left side approximately 40 days later and it leaked, seller sent me another one and it works great. Thank you Seller
Reviewed in the United States on March 25, 2026 by SaturnStar
Size: 12-inch Pigtails
works great best buy ever
Reviewed in the United States on June 30, 2026 by Barbara Trent
Size: 12-inch Pigtails
I installed this Flame King propane regulator due to my previous one of 8 years beginning to leak. Everything seemed fine ay first with no leaks. The next day, I had no propane (weird because I filled the bottles when I replaced the regulator) so I went to check the regulator and found that the quick connect coupling to the bottle on the left had broke. Almost as if it had been overtightened. But I have been around campers for many many years and know not to do that. I always simply hand tight to positive stop. Anyways, I was needing a quick fix so I ordered a single replacement hose next day. Got it, went to replace it and discovered the right side quick connect had broken exactly the same way overnight. Attempted to return to Amazon but it’s “Not eligible for return”. So I went to Walmart and bought a quality one. All is well now.
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Reviewed in the United States on March 16, 2026 by Caleb Ventling
Size: 12-inch Pigtails
Worked perfect, easy to attach, and we were back in business in no time 😀
Reviewed in the United States on July 15, 2026 by Jenny Patton