---
product_id: 303628268
title: "Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers"
price: "$152.94"
currency: USD
in_stock: null
reviews_count: 8
url: https://www.desertcart.ec/products/303628268-flame-king-kt12acr-2a-2-stage-auto-changeover-lp-propane
store_origin: EC
region: Ecuador
---

# Two 12-inch pigtails included 2-stage auto changeover tech 345,200 BTU power output Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers

**Price:** $152.94
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Stay fueled, stay unstoppable with Flame King’s auto-switch regulator!

## Quick Answers

- **What is this?** Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers
- **How much does it cost?** $152.94 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/303628268-flame-king-kt12acr-2a-2-stage-auto-changeover-lp-propane)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Convenience:** Includes two 12-inch pigtails for quick, hassle-free installation
- • **UL Listed Safety Assurance:** Certified quality with 1/4" SAE inlet and 3/8" NPT outlet for secure connections
- • **Clear Tank Status Indicator:** Color-changing indicator alerts you when it’s time to refill
- • **Seamless Dual-Tank Switching:** Never run out—auto switches tanks instantly when one empties
- • **Constant Pressure Performance:** Double-stage regulator keeps propane flow steady under all conditions

## Overview

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.

## 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.

Review: 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.
Review: Trusted product - Worked as expected, quickly installed. Happy with the product. Good fit.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Flame King |
| Brand | Flame King |
| Model | KT12ACR-2a |
| Item Weight | 2.39 pounds |
| Product Dimensions | 7 x 4 x 4 inches |
| Item model number | KT12ACR-2a |
| Exterior | Machined |
| Manufacturer Part Number | KT12ACR-2a |

## Images

![Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers - Image 1](https://m.media-amazon.com/images/I/51QOqxAlYRL.jpg)
![Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers - Image 2](https://m.media-amazon.com/images/I/61L2VXhNqaL.jpg)
![Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers - Image 3](https://m.media-amazon.com/images/I/61OoRFGNLbL.jpg)
![Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers - Image 4](https://m.media-amazon.com/images/I/61ZvQMURXrL.jpg)
![Flame King (KT12ACR-2a) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers - Image 5](https://m.media-amazon.com/images/I/61aRUvZuk4L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Putting a 16,000btu propane range in home. Want to have tanks I can handle. Will this work with two 40pound bottles?**
A: Yes it can. Open both bottles and it will pull from one until empty and then switch to the other one when needed. I can run my stove, camper heater and hot water heater at the same time from my 2 20lb bottles.

**Q: I bought this to use with a heater buddy in a small cabin.  While trying to find a fitting or connecting hose I was told the two are not compatible.**
A: I don’t know about the heater buddy connection but the unit should hook to tanks just fine

**Q: Will this work for a 55000 btu propane wall furnace?**
A: Yes
But it’s made with two outlets. You will have to plug one as needed. Or by a single regulator.

**Q: Is this unit compatible with Gaspro Type 1 gauge?**
A: If the gauge is designed for propane then yes.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy peasy replacement
*by F***H on December 26, 2025*

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.

### ⭐⭐⭐⭐⭐ Trusted product
*by S***H on January 25, 2026*

Worked as expected, quickly installed. Happy with the product. Good fit.

### ⭐⭐⭐⭐⭐ Works great
*by G***M on January 22, 2026*

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.

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**Shop now:** [https://www.desertcart.ec/products/303628268-flame-king-kt12acr-2a-2-stage-auto-changeover-lp-propane](https://www.desertcart.ec/products/303628268-flame-king-kt12acr-2a-2-stage-auto-changeover-lp-propane)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-02*