Best Propane Tank Changeover Valves for RVs and Trailers
Propane tank changeover valves ensure a continuous gas supply for RVs, campers, and trailers by automatically switching to a full tank when the current one runs dry. This guide reviews five popular options, highlighting performance, compatibility, and safety features to help you choose the right regulator and hose setup for dual-tank systems.
Summary Table
| Product | Key Feature | BTU Rating | Inlet / Outlet |
|---|---|---|---|
| Flame King KT12ACR-2 | 2-stage auto changeover; dual tank support | 345,200 | 1/4″ SAE Inverted Flare / 3/8″ NPT |
| Flame King KT12ACR-2a | 2-stage auto changeover; dual tank support | 345,200 | 1/4″ SAE Inverted Flare / 3/8″ NPT |
| RecPro 2-Stage Auto Changeover | Auto switch to full tank; lightweight | 250,000 | ¼” female NPT / ⅜” female NPT |
| Devvicoo 2-Stage Auto Changeover | Automatic tank switching; brass construction | 210,000 / 130,000 | ¼” SAE inverted flare / 3/8″ NPT |
| RV Propane Regulator 2 Tank Hoses | Dual tank capability; CSA certified | 210,000 / 130,000 | ¼” SAE inverted flare / 3/8″ NPT |
Flame King KT12ACR-2: 2-Stage Auto Changeover LP Regulator
The Flame King KT12ACR-2 is a two-stage auto changeover regulator designed for RVs, vans, and trailers with dual propane tanks. It allows removal of an empty cylinder without interrupting supply and includes two 12-inch pigtails to connect to the propane system. The regulator switches from primary to reserve automatically when the main tank empties, and it is UL Listed. Its inlets are 1/4″ SAE inverted flare and the outlet is 3/8″ NPT female pipe thread, with a BTU rating of 345,200.
Flame King KT12ACR-2a: Auto Changeover For Dual Tanks
Flame King’s KT12ACR-2a mirrors the 2-stage design with two 12-inch pigtails and dual-tank support. It automatically switches from primary to reserve when the primary tank is empty, enabling uninterrupted propane flow for RVs and trailers. UL listed, with 1/4″ SAE inverted flare inlets and a 3/8″ NPT female outlet, this regulator is built to handle up to 345,200 BTU and is a common choice for dual-tank setups in mobile applications.
RecPro 2-Stage Auto Changeover Regulator
The RecPro regulator is designed to simplify outdoor cooking and camping by automatically switching to a full tank when the other is depleted. It includes a detectable red indicator window to show which tank is active and uses pigtails for easy installation. The unit weighs about 2.5 pounds and is compatible with dual-tank configurations. Its dual 250 PSI capacity and 1/4″ female NPT inlets with a 3/8″ female NPT outlet support reliable gas flow for RVs, trailers, and campers.
Devvicoo 2-Stage Auto Changeover With Gauge
The Devvicoo regulator provides automatic transition between primary and reserve tanks and includes a gauge to monitor pressure. It is designed for dual 5-40 lb propane tanks and features universal compatibility with 1/4″ SAE inverted flare inlets and a 3/8″ NPT female outlet. Brass construction ensures durability in outdoor conditions, with a master cylinder supporting up to 210,000 BTU/hour and a reserve cylinder of 130,000 BTU/hour. The system helps maintain continuous gas supply for RVs, trailers, and campers.
RV Propane Regulator 2 Tank Hoses Kit
This two-tank regulator kit provides a secure dual-tank connection with gauged hoses for RVs and trailers. It uses durable brass components and CSA certification, designed to handle high flow for uninterrupted propane supply. The system employs dual inlets at 1/4″ SAE inverted flare and a 3/8″ NPT outlet, suitable for maintaining steady propane pressure across RV appliances and cooking systems.
Buying Guide
- Tank compatibility: Check that the regulator supports dual-fuel tanks and matches your tank sizes (usually 5-40 lb).
- Automatic switching: Look for true auto-changeover with a clear indicator so you know when a tank is depleted without manually switching.
- Pressure and BTU rating: Higher BTU ratings ensure stable gas flow for all appliances; verify your RV’s total BTU needs.
- Inlet and outlet fittings: Ensure the regulator matches common fittings (1/4″ SAE inverted flare inlets, 3/8″ NPT outlet) to fit your hose assemblies.
- Material and durability: Brass construction offers long-term outdoor durability; inspect for corrosion resistance and weather sealing.
- Safety indicators: Some models include gauge or color indicators to confirm which tank is active or when a refill is needed.
- Certification: CSA or UL listings improve reliability and safety for mobile gas systems.
- Installation: Consider whether pigtails are included and compatible with your existing hoses and mounting hardware.
- Maintenance: Regularly inspect for leaks using approved methods, and replace worn components promptly to maintain safe operation.