Best Propane Regulators for RVs: Reliable 2-Stage Changeover Options
Answering the common RV propane question: choose a two-stage auto changeover regulator for uninterrupted gas flow when using dual tanks. These regulators automatically switch from a primary to a reserve tank, helping keep appliances running without manual swaps. The right choice depends on tank setup, hose length, and whether you need pigtails included. Below are five well-matched options for different RV needs, from compact twin-tank kits to versatile single-regulator units with built-in indicators.
Summary table of selected products
| Product | Best For | Key Benefit | Notes |
|---|---|---|---|
| Flame King KT12ACR-2 | RVs with dual tanks | Auto changeover; includes two 12″ pigtails | UL Listed; 345,200 BTU |
| Flame King KT12ACR-2a | Budget dual-tank setups | Same features as KT12ACR-2; two pigtails | UL Listed; 345,200 BTU |
| PYXGLAQ 2 Tank Hoses Kit | Dual-tank systems with gauges | Brass construction; built-in gauge | CSA Certified; dual-stage |
| Flame King ACR-2a | Dual-tank RVs without pigtails | Two-stage auto changeover | UL Listed; 345,200 BTU |
| Flame King KT18ACR-2 | Longer pigtail setups | 18″ pigtails; dual-stage | UL Listed; 345,200 BTU |
Flame King KT12ACR-2 2-Stage Regulator With 12″ Pigtails
This two-stage auto-changeover regulator is designed for RVs with dual propane tanks. It automatically switches from the primary to the reserve tank when needed, ensuring continuous supply. Best for RV users who want a plug-and-play dual-tank solution with included 12-inch pigtails for straightforward installation. Choose this for straightforward dual-tank setups and a UL-listed regulator rated up to 345,200 BTU.
Who it’s best for: RVs with two propane tanks and a need for automatic transfer without supply interruption. Limitation: comes with 12″ pigtails; longer hose runs may require additional fittings.
Flame King KT12ACR-2a 2-Stage Regulator With Pigtails
This model mirrors the KT12ACR-2 but is offered as a variant for users seeking the same two-stage auto changeover with two 12-inch pigtails. It provides reliable dual-tank switching and the same UL-listed safety standards. Best for RV owners who want a widely compatible regulator with dual-tank capability and easy wiring into existing propane lines.
Who it’s best for: dual-tank RV setups needing dependable, auto-switching operation. Limitation: data indicates identical BTU rating; confirm compatibility with your hose/connectors before purchase.
PYXGLAQ 2 Tank Hoses Kit With Gauge
This kit pairs a dual-tank regulator with 2-tank hoses made from solid brass and includes a glow-in-the-dark gauge. It’s CSA-certified and designed to maintain consistent gas pressure with dual tanks. Best for RVers who want a gauge-equipped, corrosion-resistant setup and a clear tank level indicator. Limitation: some users may need to verify the gauge visibility in bright sunlight or low-light conditions.
Who it’s best for: campers who value visible gas level indicators and durable brass fittings. Choose this if you want the dual-tank regulator alongside gauge-equipped hoses in one package.
Flame King ACR-2a 2-Stage Without Pigtails
This 2-stage auto changeover regulator is a compact option for RVs using dual tanks but sold without pigtails, offering flexibility for customers who already have preferred hoses. Best for buyers who want to customize their hose length and fittings. Limitation: requires separate purchase of pigtails if needed for connection to tanks.
Who it’s best for: RV owners who want to tailor hose lengths and fittings to their setup. Avoid this if you prefer an all-in-one kit with included pigtails for quicker installation.
Flame King KT15ACR-2 15-Inch Pigtails
This regulator includes two 15-inch pigtails, making it suitable for RVs that need longer connections to tanks. It maintains the 2-stage auto changeover and UL-listed safety. Best for larger RVs or setups where the regulator must reach farther tanks. Limitation: longer pigtails add extra length to the gas line, which may require additional securing.
Who it’s best for: RVs with tanks positioned further apart or requiring longer hose runs. Choose this if you need extended pigtail length for installation flexibility.
Flame King KT18ACR-2 18-Inch Pigtails
Designed for RVs with even longer tank-to-regulator distances, KT18ACR-2 uses 18-inch pigtails while providing the same two-stage auto-changeover functionality. Best for large rigs or setups that demand extended supply lines. Limitation: extra length may require more mounting planning to keep lines tidy.
Who it’s best for: large RVs or dual-tank layouts with spaced tanks. Choose this if you need extended reach from regulator to tank.
MEFUN New RV Propane 2-Stage Regulator Kit
This two-tank regulator kit includes 18-inch stainless braided hoses with a glow-in-the-dark gauge. It swaps smoothly between primary and reserve tanks and warns when a tank runs low. Best for RVers who value a full dual-tank solution with a durable hose assembly and built-in monitor. Limitation: installation notes caution about not using sealing tape during certain hose connections.
Who it’s best for: campers seeking a complete dual-tank system with visual gas-level indicators. Choose this for a ready-to-install dual-propane setup with gauge visibility.
Flame King 150,000 BTU Horizontal Regulator With POL
This horizontal, two-stage regulator is designed for RVs, vans, trailers, and camp appliances using larger tanks. It features a POL inlet and a 3/8″-18 NPT outlet for secure integration into the main gas line. Best for setups with fixed, stationary tank arrangements and higher-demand appliances. Limitation: horizontal orientation may require specific mounting space and proper clearance for heat dissipation.
Who it’s best for: RVs needing a robust, higher-capacity regulator with POL inlet and reliable dual-stage performance. Avoid if your system requires shorter, vertical mounting with compact fittings.
Buying Guide: How to Choose the Right RV Propane Regulator
- Regulator type: Prioritize two-stage auto changeover when using two propane tanks to maintain steady pressure and seamless switching.
- Tank setup: Confirm whether your RV uses two tanks, one tank, or a single-tuel arrangement and select a regulator that includes compatible pigtails or hoses.
- Inlet/outlet fittings: Ensure the regulator’s inlet and outlet sizes match your hoses and tanks (commonly 1/4″ SAE inverted flare inlet and 3/8″ NPT outlet).
- BTU rating: Higher BTU ratings support more appliances simultaneously; verify that the regulator’s rating meets or exceeds your total demand (345,200 BTU is common for these units).
- Hose length: If space between tanks and regulator is significant, choose a kit with longer pigtails (12″, 15″, or 18″).
- Safety and certification: Look for UL Listed and CSA Certified components for safety and compliance.
- Gauge visibility: Some kits include glow-in-the-dark gauges to monitor tank levels without disassembly.
- Installation notes: Some products advise specific steps or cautions about sealing tape; follow manufacturer guidance to avoid leaks.
Frequently Asked Questions
- What does a two-stage auto changeover regulator do?
It balances gas pressure and automatically switches from the primary tank to the reserve tank when the primary is depleted, preventing interruption of propane supply. - Do I need pigtails with a dual-tank regulator?
Many dual-tank regulators include pigtails; if not, ensure you purchase compatible hoses of appropriate length and fittings. - Is UL or CSA certification important?
Yes. Certifications indicate adherence to safety standards and reliable performance in RV gas systems. - Can I use a regulator without longer hoses?
It’s fine if your tanks are close to the regulator, but longer runs require appropriate pigtail length to avoid tension or leaks. - How do I know if I installed it correctly?
Always follow the manufacturer’s installation instructions and consider using a propane leak detector or soapy water test to verify connections before turning on appliances.