If you’re searching for a reliable LP regulator for your RV, you want a model that automatically switches between tanks, maintains steady gas pressure, and fits your tank setup. This guide highlights five strong choices suitable for dual-tank RV systems, travel trailers, and campers. It explains who each regulator is best for, why it was selected, and any small limitations to consider. Use the comparison table to quickly compare key specs and choose the right regulator for your rig.
| Product | Best For | BTU Capacity | Tank Setup |
|---|---|---|---|
| Flame King KT12ACR-2 | Dual-tank RVs needing quick refills without interruption | 345,200 BTU | Dual 1/4″ SAE inlets, 3/8″ NPT outlet |
| Fairview GR-9984 | High-demand cold-weather RV use with reliable flow | 345,000 BTU | 1/4″ inverted flare inlets, 3/8″ NPT outlet |
| Cavagna Kosan 924N | Simple, dependable two-tank switching for frequent travels | 160,000 BTU | Dual cylinder setup |
| Flame King KT18ACR-2 | Mid-to-large RVs needing higher capacity with dual pigtails | 345,200 BTU | Two 18″ pigtails; dual-tank ready |
| Devvicoo 2-Stage Auto Changeover | Budget-friendly dual-tank option with gauge | 210,000 BTU (reserve 130k), 210k primary | 1/4″ inverted flare inlets, 3/8″ NPT outlet |
Flame King KT12ACR-2: 2-Stage Auto Changeover
Best for: RVs with dual propane tanks that want seamless operation while refilling. This 2-stage regulator automatically switches from the primary to the reserve tank when the primary is empty, ensuring continuous gas supply for cooking and heating.
- Two 12-inch pigtails included for easy connections to tanks or supplies.
- UL Listed regulator with 1/4″ SAE inverted flare inlets and 3/8″ NPT outlet.
- Rated up to 345,200 BTU for reliable performance across RV appliances.
Limitation: Pigtails are fixed-length; if your mounting requires different hose lengths, you may need to adapt. Best used in standard dual-tank setups with compatible fittings.
Fairview GR-9984: 2-Stage Auto Changeover
Best for: RV users who prioritize uninterrupted flow during high-demand cooking and heating, especially in cold weather.
- Automatic changeover between service and reserve tanks to maintain continuous operation.
- Two-stage design reduces high tank pressure to a steady 11″ water column for stable flow.
- High-capacity performance supports up to 345,000 BTU with strong cold-weather performance.
Limitation: Slightly larger footprint; ensure mounting space fits your RV cabinet or external win area.
Cavagna Kosan 924N: Auto Changeover Dual Cylinder
Best for: RV travelers who want a straightforward dual-tank setup with easy top checks and reliable auto-switching.
- Dual-tank compatibility with a simple top indicator for checks.
- Rugged two-stage auto changeover ensures consistent flame and gas supply.
- Delivers steady 11″ WC pressure to all RV appliances.
Limitation: BTU rating is lower than some high-demand setups; suitable for typical RV appliances but may not support heavy simultaneous usage on very old or oversized systems.
Flame King KT18ACR-2: 2-Stage With 18-Inch Pigtails
Best for: Larger RVs or campers that require longer pigtails and robust dual-tank operation for uninterrupted gas flow.
- Includes two 18-inch pigtails for flexible installation.
- UL Listed regulator with 1/4″ inverted flare inlets and 3/8″ NPT outlet.
- 345,200 BTU rating supports multiple appliances simultaneously.
Limitation: Length of pigtails requires adequate clearance; verify mounting space and hose routing in your RV storage area.
Flame King ACR-2a: Dual Tank Auto Changeover (No Pigtails)
Best for: RVs that already have tailored hose configurations or want to add a regulator without the supplied pigtails.
- Automatic switch from primary to reserve tank when primary is empty.
- UL Listed with 3/8″ NPT outlet and 1/4″ SAE inverted flare inlets.
- Rated for up to 345,200 BTU, suitable for most RV applications.
Limitation: Ships without pigtails; buyers must ensure compatible hose lengths and fittings are available.
Buying Guide: How To Choose The Right RV LP Regulator
What should you look for when selecting an LP regulator for your RV?
- Number of tanks and changeover type: Dual-tank regulators with automatic changeover are ideal for uninterrupted supplies on long trips. If you only have one tank, a single-stage regulator may be sufficient, but most RV setups benefit from a two-stage design.
- BTU capacity: Higher BTU ratings support more appliances simultaneously. Match the regulator’s BTU rating to your RV’s typical gas demand and tank size.
- Inlets and outlets: Ensure the regulator’s inlet fittings match your tank valve type (SAE inverted flare is common) and that the outlet size matches your main gas line (often 3/8″ NPT).
- Mounting and hoses: Check if pigtails are included and their lengths. Longer pigtails offer flexibility but may add clutter. Consider mounting space and weather exposure where the regulator sits.
- Materials and durability: Brass and high-grade components resist outdoor conditions and corrosion, extending regulator life in varying climates.
- Ease of maintenance: Regulators with clear indicators or simple top-access checks simplify routine checks for leaks and operation.
Frequently Asked Questions
- What is a two-stage regulator and why do RVs need it?
– A two-stage regulator lowers high tank pressure in two steps, providing a stable, lower pressure (typically around 11″ water column) for RV appliances, improving performance and reducing flame fluctuation. - Do I need pigtails with my regulator?
– Pigtails connect the regulator to the propane tanks or supply lines. Some models include them; others do not. Check your installation space and ensure you have compatible hose lengths. - Can I use a single regulator for dual-tank systems?
– Dual-tank regulators with automatic changeover are designed for dual tanks. A single-tank regulator will not switch between tanks automatically and may interrupt supply if the active tank runs dry. - What BTU rating should I look for in RV regulators?
– For most RVs, regulators in the 345,000 BTU range support multiple appliances. If you have a high-demand setup (large camper, multiple heaters, and a generator), consider higher capacity options within regulatory limits. - Are there safety considerations when upgrading regulators?
– Always ensure proper fittings, leak testing after installation, and adherence to manufacturer guidelines. If unsure, consult a professional installer. - What is the advantage of a regulator with a gauge?
– A regulator with a gauge helps monitor pressure and detect issues early, reducing the risk of appliance flame instability.