Propane Auto Changeover Regulator with Dual 15in Pigtails - Reliable

In this review of the Flame King KT15ACR-2 regulator the bottom line is simple: this is for RV and trailer owners who need continuous propane when swapping or refilling twin cylinders. The unit's main selling point is the automatic two-stage changeover that lets the primary tank be removed without cutting propane supply, which makes tank handling and long trips less stressful. It is UL listed and factory set to 11WC, and while build quality reports are mixed the regulator's functionality and included 15in pigtails make it a practical, budget-conscious choice.

Key Features

• Automatic changeover: switches from the primary to the reserve cylinder automatically so appliances stay lit when a tank runs out.
• Two 15in pigtails included: provides the fittings you need to connect both tanks immediately, reducing extra shopping for hoses.
• Double-stage regulation: maintains constant gas pressure under changing demand, helping stoves and heaters run smoothly.
• High capacity rating: rated for 345,200 BTU which covers common RV appliance loads without choking the supply.
• Standard fittings: 1/4in SAE inverted flare inlets and a 3/8in NPT female outlet fit typical RV plumbing arrangements.
• Factory set pressure: set at 11WC for consistent performance out of the box without field adjustment.

Who It's For

This regulator is aimed at RV owners, vanlifers, and trailer users who operate with dual propane tanks and want uninterrupted service while refilling or switching cylinders. It suits people who value a straightforward, auto changeover system and who will pair it with standard hoses and fittings.

Those who need heavy-duty commercial fittings or who are highly concerned about long-term hose durability should look elsewhere or consider upgrading the supplied pigtails to higher-end thermoplastic or braided options; some customers reported hose and plastic part wear over time.

Pros & Cons

Pros

• Automatic switch keeps appliances running during tank swaps.
• Includes two 15in pigtails so installation is ready for dual-tank RV systems.
• Double-stage design and 11WC factory setting deliver stable gas pressure for common RV loads.
• UL listed and has a high BTU rating suitable for most recreational setups.

Cons

• Some reports of hose or plastic fitting durability suggest replacing pigtails may be advisable for heavy or long-term use.

Specifications

Our Verdict

The Flame King KT15ACR-2 is a sensible, value-oriented auto changeover regulator for RV and trailer users who want uninterrupted propane supply during tank swaps. It delivers the key functionality, standard fittings, and a high BTU rating at a modest price, though buyers who prioritize long-term hose durability should consider replacing the supplied pigtails with heavier-duty hoses.

Frequently Asked Questions

Can I remove an empty tank without shutting off service?
Yes, the regulator automatically switches to the reserve tank so you can remove and refill the empty cylinder without interrupting propane supply.

What fittings does this regulator use?
The inlets are 1/4in SAE inverted flare and the outlet is a 3/8in NPT female pipe thread, matching common RV plumbing.

Are the included pigtails durable?
Many users find the 15in pigtails convenient for installation, but some report durability issues with plastic fittings, so consider upgrading to a higher-grade hose if you expect heavy use.