A 2 stage propane regulator ensures your appliances receive a steady flow of gas during your travels. Selecting the right model depends on your specific setup, including whether you need a manual or automatic changeover and a horizontal or vertical mounting configuration.
Best overall: Flame King KT12ACR-2, which provides a reliable automatic changeover system for dual-tank setups and includes the necessary pigtails to get your system running immediately without needing extra hardware.
Highest BTU capacity: Kosan 924N Regulator, a rugged choice for those who need to maintain steady pressure for multiple high-demand appliances like heaters and water heaters simultaneously across a wide pressure range.
Best for horizontal mounting: Camco 2-Stage Regulator, which is specifically engineered for horizontal installations and features an integrated design that ensures consistent fuel delivery to your RV systems.
This guide is for RV owners who want to upgrade or replace their current propane system with a dependable, two-stage regulator.
How We Picked
We compared 16 different propane regulator listings to find options that offer clear technical specifications and verified safety features. Our selection process prioritized models that explicitly state their BTU capacity, mounting orientation, and connection types, as these factors determine compatibility with your specific RV plumbing. We excluded any products that lacked essential safety certifications or clear installation requirements, ensuring that every pick on this list provides the necessary data for a safe and informed purchase.
All 10 products side by side — scroll sideways to see every column.
| Top Pick | Best for Tank Status | Best for Horizontal Use | Best for Safety | Best for Complete Kits | Best for Leak Detection | Best for Compact Spaces | Best for High Capacity | Best for Vertical Mounts | Best for OE Replacement | |
| Preview |  |  |  |  |  |  |  |  |  |  |
|---|---|---|---|---|---|---|---|---|---|---|
| Product | Flame King KT12ACR-2 | Kosan 924N Regulator | Camco 2-Stage Regulator | Suburban LP-R524V Regulator | RV 2-Stage Auto Changeover | RV Propane Regulator Kit | RecPro 2-Stage Regulator | Flame King 300k BTU | Flame King Vertical Regulator | Excela-Flo Two-Stage Regulator |
| Brand | Flame King | Cavagna | Camco | Suburban | JURPLIX | PYXGLAQ | RecPro | Flame King | Flame King | Part Synergy |
| Best for | Best Overall | Best for Tank Status | Best for Horizontal Use | Best for Safety | Best for Complete Kits | Best for Leak Detection | Best for Compact Spaces | Best for High Capacity | Best for Vertical Mounts | Best for OE Replacement |
| The listing says | Refill empty cylinder without interrupting supply Switches to reserve tank automatically | Automatically draws from reserve cylinder 2 stage regulator with L bracket | Integral first and second stages POL tank inlet, 3/8" Female NPT outlet | 10 psi first stage, 11" WC second 160,000 BTU/hour capacity | Automatic switch between two tanks 210,000 BTU/HR primary, 130,000 BTU/HR reserve | Solid brass fittings, CSA certified Automatic switch to reserve tank | Automatic switch to full tank QCC1 hoses with flow limiter | Dual-stage design for constant pressure Aluminum and solid brass construction | Dual-stage design for constant pressure Heavy duty aluminum construction | Direct OE replacement |
| More information | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon |
1. Flame King (KT12ACR-2) 2-Stage Auto Changeover LP Propane Gas Regulator
Best for: Owners of standard RVs with two propane tanks.
This regulator simplifies your setup by automatically switching from your empty primary tank to your reserve tank. Because it allows you to remove the empty cylinder for a refill without shutting down your gas supply, it’s ideal for long trips where you can’t afford to lose heat or refrigeration.
The unit is UL-listed and factory-set at 11 inches of water column pressure. This ensures that your appliances receive the exact amount of gas they need for efficient operation. If your RV uses smaller or non-standard tank setups, this model may not be the right fit for your specific connection needs.
Check your current hardware before buying. This regulator requires 1/4″ SAE inverted flare inlets and a 3/8″ NPT female pipe thread outlet. If your existing lines don’t match these specifications, the unit won’t seat properly.
Use this model if you demand consistent pressure across multiple appliances. Its double-stage design maintains steady flow even when demand fluctuates. However, if you only run a single tank, the automatic changeover feature provides no benefit. In that case, you’re paying for hardware that serves no purpose in your specific configuration.
Pros
- Automatic changeover between tanks
- Includes two 12-inch pigtails
- Rated for 345,200 BTU output
Cons
- Requires dual tank setup
- Limited to specific mounting
2. Kosan 924N RV Propane Regulator
Best for: Travelers with high-demand appliances and multiple heaters.
This regulator provides a continuous gas supply, making it a strong choice for those who spend significant time in their RV. The top-mounted indicator lets you check your fuel status at a glance, so you know exactly when to swap your bottles without guessing.
It handles a wide range of pressures, keeping flames stable even when running multiple appliances. If you use a single propane tank, this unit is likely overkill; it’s specifically engineered for dual-tank setups that require an automatic changeover. Use this model if you need to swap bottles without shutting down your system. If your setup only uses one tank, a simpler, single-stage regulator will save you space and installation effort.
The unit manages a 160,000 BTU capacity, ensuring heaters, cooktops, and water heaters perform reliably. It operates across 25–250 PSIG to maintain a steady 11″ WC pressure. If you notice flickering flames or uneven heating, check the top indicator first. If the indicator shows red, the primary tank is empty and the system has already switched to your reserve.
Pros
- High 160,000 BTU capacity
- Easy-to-read top indicator
- Durable, corrosion-resistant design
Cons
- Designed specifically for dual tanks
- Larger footprint than basic models
3. Camco RV Propane Regulator 2 Stage Horizontal Mount with POL
Best for: Campers requiring a reliable horizontal mounting solution.
The Camco 2-Stage Regulator uses a standard POL connection to feed your system. Its internal two-stage design provides a smoother, more consistent flow of propane to all your appliances. This steady delivery prevents the pressure fluctuations that cause burners or furnaces to cycle on and off improperly.
If you have a vertical mounting configuration, this unit won’t work. You must confirm your current orientation before ordering to ensure the physical layout matches the required horizontal alignment. Installing this regulator in a vertical position can compromise the internal diaphragm and lead to inconsistent pressure.
The device handles up to 160,000 BTU/HR, making it robust enough for most standard trailer setups. It features a 3/8-inch female NPT outlet and maintains a consistent output pressure of 11 inches of water column. If your appliances are struggling to maintain a steady flame, check your existing regulator for this specific pressure rating.
Pros
- Consistent gas flow delivery
- Standard 3/8-inch NPT outlet
- Proven horizontal design
Cons
- Horizontal mount only
- No automatic changeover feature
4. Suburban LP-R524V Two-Stage LP Regulator
Best for: RVs with a vertical mounting requirement.
This regulator focuses on safety, using an excess flow device that limits gas release if a hose ruptures or disconnects. It handles single horizontal or vertical tanks, maintaining a stable 11-inch water column pressure for all your appliances. You can rely on this unit for systems requiring up to 160,000 BTU/hour.
The kit includes plastic vent covers, which are required by RVIA standards for outdoor installations. If you need an automatic changeover feature, choose a different model; this unit is designed for straightforward, single-line pressure management. Always verify your connection sizes before starting, as this regulator uses specific female pipe thread dimensions for the inlet and outlet.
If the internal mechanism malfunctions, the built-in overpressure protection device shuts off gas flow. This limits environmental propane release to less than 2 psi, protecting your system.
Pros
- Includes safety shut-off device
- Vertical or horizontal mount
- CSA-compliant vent covers included
Cons
- No automatic changeover
- Single-line pressure management only
5. RV 2-Stage Auto Changeover LP Propane Gas Regulator with 48″
Best for: Users who want a complete kit with extra hoses.
This is a comprehensive package that includes not only the regulator but also stainless steel braided hoses and a pressure gauge. The glow-in-the-dark gauge is a helpful addition for monitoring your propane levels during late-night arrivals or in dark storage compartments. You can easily detect leaks without removing the tank.
The stainless steel construction provides extra durability against rust and the elements. Because this kit includes a 48-inch main hose and two 18-inch pigtails, it’s best suited for those who need to replace their entire connection system at once rather than just the regulator head.
If your primary cylinder capacity reaches 210,000 BTU/HR, this unit handles the load while the reserve side manages 130,000 BTU/HR. Check your current fittings before starting; this system uses standard SAE inverted flare inlets and a common NPT female outlet. If the indicator shows red, your tank is empty or off. A green light confirms normal operation. This switch prevents sudden gas interruption, keeping your equipment running smoothly during travel.
Pros
- Includes stainless steel hoses
- Glow-in-the-dark pressure gauge
- Complete installation kit
Cons
- More parts to install
- Requires space for gauge
6. RV Propane Regulator Kit
Best for: Those who want integrated leak detection and monitoring.
This kit focuses on durability with 100% solid brass fittings and a weather-resistant braided hose. The automatic changeover feature ensures that you always have access to gas, while the included gauge allows you to detect leaks or low levels without the need to shake your tanks.
The manufacturer notes that this regulator is built for consistent performance in outdoor environments. If your current setup is in a very tight or enclosed space, the addition of the gauge and the specific 18-inch hose lengths might make the installation more crowded than a basic regulator replacement.
Use this kit if you need to manage dual tanks efficiently. The system handles 210,000 BTU/Hour from the master cylinder and 130,000 BTU/Hour from the reserve. If the primary tank runs dry, the regulator switches automatically. Watch the indicator color change to know exactly when to refill.
Pros
- Solid brass construction
- Integrated tank gauge
- Automatic changeover included
Cons
- Requires specific clearance
- More complex installation
If your existing lines do not match the required flare inlet and NPT female outlet, this kit will not fit. Always use the included gas-rated Teflon tape during assembly to ensure a proper seal.
7. RecPro RV 2-Stage Auto Changeover Propane Regulator w/Hose
Best for: Owners looking for a lightweight and compact solution.
At only 2.5 pounds, this regulator is easy to handle during installation, which is a benefit if you’re working in a cramped RV storage bay. It features an automatic changeover system that switches to the full tank when the primary one runs out, signaled by a red indicator window.
The unit is rated for a high maximum working pressure, ensuring reliable performance for your RV gas system. However, because it’s compact, it doesn’t offer the same heavy-duty aesthetic as some of the larger, industrial-style regulators on this list.
Pros
- Compact and lightweight
- Automatic changeover included
- High-pressure capacity
Cons
- Smaller visual indicator
- Limited mounting hardware
8. Flame King 300k BTU
Best for: Large RVs and food trucks with high gas demand.
When you have multiple high-BTU appliances, such as commercial-grade stoves or large heaters, this model provides the capacity you need. It’s rated for 300,000 BTU, which is significantly higher than standard residential-style regulators, ensuring your system doesn’t starve for fuel during peak usage. The dual-stage design maintains constant pressure even when demand shifts, preventing the flickering or pressure drops common in undersized units.
It uses a horizontal mount and heavy-duty aluminum and brass materials for a secure connection. If your setup uses a POL inlet tank connection and a standard NPT outlet to the main gas line, this regulator fits your existing plumbing. Because of its high capacity and size, it’s intended for larger vehicles and may be overkill for a standard travel trailer. If you only run a single stove or a small furnace, the 11-inch water column pressure might exceed your appliance requirements. Always verify your total appliance load before installation to ensure this high-output model is necessary for your specific gas system.
9. Flame King Vertical Regulator
Best for: Vertical mounts on larger vehicles.
This vertical regulator provides 150,000 BTU of capacity and comes with a built-in rain cover, which is a thoughtful touch for protecting the internal components from the elements. It maintains a consistent 11-inch water column, suitable for most standard RV appliances.
The unit is constructed from heavy-duty aluminum to prevent leaks and ensure a secure connection to your gas line. Use this regulator if your system requires a vertical orientation for 100lb tanks, ASME tanks, or generators. If your RV uses a horizontal mounting system, this unit won’t fit, so verify your mount before purchasing.
Check your connection sizes before starting. This regulator uses a standard 1/4″ female 18NPT inlet and a 3/8″-18NPT outlet. If your existing lines don’t match these specifications, you’ll need additional adapters to ensure a leak-free seal.
Pros
- Includes protective rain cover
- Vertical design
- Durable aluminum build
Cons
- Vertical mount only
- Moderate BTU capacity
10. Excela-Flo Two-Stage Regulator
Best for: Direct replacement of factory-installed equipment.
This regulator matches original factory specifications, making it a reliable choice for a direct swap of a failing unit. It features a zinc-coated body, providing the durability needed to withstand the constant vibration experienced by RVs on the road.
If you’re replacing a standard unit, this model installs without modifications. Because it’s engineered for direct-fit compatibility, you save time during installation. However, verify your current inlet and outlet sizes before purchase; if your existing lines differ from these standard dimensions, this unit won’t fit without additional adapters.
Because this regulator focuses on being an exact replacement for standard setups, it lacks the extra features like gauges or hoses found in all-in-one kits. Use this if you need to restore original functionality and look. If your system requires integrated monitoring or extended hardware, look elsewhere.
Pros
- Direct factory replacement
- Durable zinc-coated body
- Tested for road vibration
- 225,000 BTU capacity
Cons
- No included accessories
- Basic feature set
How to Choose in Sixty Seconds
How do I know if I need a horizontal or vertical regulator?
Check the orientation of your current regulator and the way it’s mounted to the RV body or tank bracket. A vertical regulator must be installed with the vent facing downward to prevent moisture from collecting inside the diaphragm; the Underwriters Laboratories standards for gas regulators emphasize proper mounting to ensure the vent remains clear of debris and water. Always look for the vent position on the housing, as this is the primary indicator of the correct mounting angle required for safe and effective operation.
Is a two-stage regulator necessary for my RV?
Yes, a two-stage regulator is standard for all RVs because it provides the safety and stability that single-stage units cannot. The first stage reduces the high pressure from your propane tank to a manageable level, and the second stage lowers it further to a precise, low pressure that your appliances can safely use. If you’re replacing an older model, ensure that the new unit is explicitly labeled as a two-stage regulator to maintain the safety standards of your RV’s gas system.
What should I check before buying a replacement?
Before ordering, confirm your connection types and the BTU requirements of your appliances. Most RV regulators use a 3/8-inch NPT outlet, but inlets can vary between POL connections and SAE inverted flares. If your appliances include a high-BTU furnace or a large water heater, ensure the regulator’s BTU rating meets or exceeds the total draw of your system. It’s also wise to check if your current setup uses a single tank or a dual-tank auto-changeover system. Buying the wrong connection type will require extra adapters, which can introduce potential leak points into your propane system, so matching your existing hardware is always the safest path.
Related guides
Frequently Asked Questions
What parts do I need to buy separately?
Most regulators include the main unit, but you may need additional supplies depending on your setup. Many kits include a bracket and pigtails, but you should verify if gas-rated Teflon tape or a wrench are provided. If the listing does not explicitly include hoses, assume you must purchase them separately.
How often should I replace my RV propane regulator?
Most experts recommend replacing your regulator every 10 to 15 years or sooner if you notice performance issues. If your flames are yellow, flickering, or you smell gas, the unit requires immediate replacement. Always replace the regulator if it shows signs of physical damage or fails to maintain steady pressure.
Is the simplest regulator on the list enough for my RV?
A basic regulator like the Camco 2-Stage Regulator is perfectly adequate if your RV uses a single tank or if you don’t mind manually switching tanks when one runs out. If you don’t have a dual-tank setup, you don’t need to pay for the extra switching valves and indicators found in the other kits.
What is the most common cause of regulator failure?
The most frequent cause of failure is the buildup of moisture or debris inside the vent, which can freeze or block the diaphragm. This is why it’s so important to mount your regulator correctly—with the vent facing down—and use a protective cover if one isn’t provided.
Closing
Selecting the right propane regulator requires balancing specific mounting needs with the total BTU demand of your RV’s appliances. If your system runs heaters, water heaters, and cooktops simultaneously, choose a unit rated for at least 210,000 BTU to avoid performance drops.
Always verify your mounting orientation before buying. A vertical mount regulator often requires a specific rain cover to protect internal components from the elements, whereas horizontal units are designed for different clearance profiles. If you see a red indicator window, the regulator is signaling that your primary tank is empty; green confirms normal operation.
A common mistake is ignoring the condition of your pigtails. If your existing hoses show signs of cracking or age, replacing them alongside the regulator is essential for safety. Kits that include stainless steel braided pigtails with integrated gauges offer a significant advantage, allowing you to monitor fuel levels and detect leaks without removing the tanks. Ensure your chosen inlet and outlet sizes match your existing plumbing to avoid installation delays.
