










🔥 Stay fueled, stay unstoppable with Flame King’s auto-switch regulator!
The Flame King KT12ACR-2a is a UL-listed, 2-stage propane gas regulator designed for RVs, vans, and trailers. It features automatic switching between two propane tanks to ensure uninterrupted fuel supply, includes two 12-inch pigtails for easy hookup, and maintains consistent gas pressure rated at 345,200 BTU. Its color indicator signals when a tank is empty, making propane management effortless and reliable on the road.










| ASIN | B08XYH5H6Q |
| Best Sellers Rank | #3,639 in Automotive ( See Top 100 in Automotive ) #4 in RV Gas Supply Parts & Accessories |
| Brand | Flame King |
| Customer Reviews | 4.4 4.4 out of 5 stars (6,499) |
| Date First Available | March 4, 2021 |
| Exterior | Machined |
| Item Weight | 2.4 pounds |
| Item model number | KT12ACR-2a |
| Manufacturer | Flame King |
| Manufacturer Part Number | KT12ACR-2a |
| Model | KT12ACR-2a |
| Product Dimensions | 7 x 4 x 4 inches |
F**H
Easy peasy replacement
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.
R**S
Works perfectly
Quick and easy install , done and back online in 15 minutes
M**.
Easy
Very easy to change out with the old one that quit working.
A**R
Pigtails BOTH cracked/fell apart in less than 7 months
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.
R**S
Junk
Junk leaks out of both connection three both gauges
G**M
Works great
Great product if you don't like waking up to a cold trailer. Hook up two tanks and when one goes empty, it reverts to the full one. All needed is checking the gauge every couple days to see if a tank is empty.
J**A
Our RV could have Exploded!!
It lasted us 2 months. Came back home and it flood the house with propane smell. I got home, wife said she felt sleepy, went outside to hear hissing, the green part of the hose that screws onto the tank cracked, causing a leak of propane. Thanks to God wife didn’t turn any spark on, or things could've ended badly! I would not recommend if you’re using this with a 100lb tank. If there was any little spark our RV could have exploded and who knows what else. I figured with good reviews I could trust it, but not anymore. I’m just so glad I was able to catch this on time before anything happened.
L**.
worked great and good quality
worked great and good quality
D**H
Does exactly what it claims to do. Auto switch between tanks and indicator tells which tank is being used and status of the propane.
A**Y
Works as intended! Changeover works flawlessly. Indicator is clear and I've had no issue with flow. Mounting points worked from my old regulator on my 1980's Okanagan Camper. Recommend if you want to add a second tank to your old camper and if you have the room for the tanks; My space is a little tight but this regulator fits nicely in between them.
B**.
10/10 recommend. Fit perfectly and works as it should, I called around to local rv stores and they’re charging over $140 for this exact item. Save your money and order this. Very good quality, the threads are all good quality brass design. The propane on/off regulator switch is very durable construction and accurate as well as the entire design. The rubber hoses are durable and perfectly placed. I run dual 30lb propane bottles connected to this and it works perfectly and fits almost all designs. Only thing i recommend is ordering some yellow propane/ gas cerftified thread tape to put in the male connectors.
L**A
Easy to install and works perfect
J**.
Do not buy this product as the pigtail connecters are defective after about a month of having this installed and only changing the tanks once before I went to change them again I noticed both pigtail connecters were cracked and I could smell propane leaking out these plastic green connecters split and crack. I did not over tighten and temperatures outside. Got to maybe -5 to -10 degrees Celsius.
Trustpilot
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