--- product_id: 298162043 title: "Flame King ACR-2a 2-Stage Auto Changeover LP Propane Gas Regulator for RVs, Vans, and Trailers (Without Pigtails)" brand: "flame king" price: "254 zł" currency: PLN in_stock: true reviews_count: 13 category: "Flame King" url: https://www.desertcart.pl/products/298162043-flame-king-acr-2a-2-stage-auto-changeover-lp-propane store_origin: PL region: Poland --- # Auto-switches tanks seamlessly 345,200 BTU rating Dual-stage pressure regulation Flame King ACR-2a 2-Stage Auto Changeover LP Propane Gas Regulator for RVs, Vans, and Trailers (Without Pigtails) **Brand:** flame king **Price:** 254 zł **Availability:** ✅ In Stock ## Summary > 🔥 Keep your adventure fueled without a hitch! 🔄 ## Quick Answers - **What is this?** Flame King ACR-2a 2-Stage Auto Changeover LP Propane Gas Regulator for RVs, Vans, and Trailers (Without Pigtails) by flame king - **How much does it cost?** 254 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/298162043-flame-king-acr-2a-2-stage-auto-changeover-lp-propane) ## Best For - flame king enthusiasts ## Why This Product - Trusted flame king brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Auto Changeover:** Automatically switches from primary to reserve tank, so your RV keeps running smoothly. - • **Perfect Fit for RVs & Vans:** Compact 7x4x4 inch design with standard SAE and NPT connections for easy installation and compatibility. - • **Precision Pressure Control:** Dual-stage regulator maintains steady 11" WC pressure for consistent performance under varying demand. - • **Uninterrupted Propane Flow:** Swap empty tanks without losing gas supply—never run out mid-adventure. - • **Built for Safety & Durability:** High-strength thread-locker ensures leak-free, secure fittings—peace of mind on the road. ## Overview The Flame King ACR-2a is a UL-listed, dual-stage propane regulator designed for RVs, vans, and trailers. Rated at 345,200 BTU, it automatically switches between dual propane tanks to ensure uninterrupted fuel supply. Factory-set for precise 11" WC pressure, it features secure, leak-proof connections and compatibility with Flame King's hoses and pigtails, making it a reliable, easy-to-install solution for on-the-go propane management. ## Description desertcart.com: Flame King ACR-2a 2-Stage Auto Changeover LP Propane Gas Regulator for RVs, Vans, and Trailers (Without Pigtails) : Automotive Review: Perfect fit. - Perfect fit for my camper. Works like it should. The auto change over is great. Review: Replaced a recalled regulator, easy install. - Purchase this to replace a regulator that was recalled by the RV manufacture, Keystone. This was much cheaper than trying to take it back to the dealership and leaving it there for a week for them to jerk around. Very simple to install ## Features - Allows removal of an empty cylinder for refill without interrupting the propane supply - For RVs with dual propane tanks, it automatically switches from the primary tank to the reserve tank when the primary is empty - UL LISTED: Inlets are 1/4" SAE inverted flare, and the outlet is 3/8" NPT female pipe thread; rated for 345,200 BTU - Double-stage design maintains constant gas pressure under changing demand and conditions; the regulator is factory set at 11" WC (water column); lockout pressure is up to 14.9" WC - Compatible with Flame King's 48-inch Thermo Plastic Hose (Model 100383-48) and 12-18 inch INVERTED FLARE Pigtails (Models E12INPT, E15INPT, or E18INPT) - For your safety and to ensure leak-free performance, these regulators are assembled using high-strength thread-locker (Loctite) on the adapter connections where the pigtails are attached. This is an intentional safety measure designed to keep critical fittings secure and prevent gas leaks during use. - Note: NPT pigtails are not recommended. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08XYH1JS7 | | Best Sellers Rank | #27,210 in Automotive ( See Top 100 in Automotive ) #48 in RV Gas Supply Parts & Accessories | | Brand | Flame King | | Customer Reviews | 4.5 4.5 out of 5 stars (1,839) | | Date First Available | March 4, 2021 | | Exterior | Machined | | Item Weight | 1.74 pounds | | Item model number | ACR-2a | | Manufacturer | Flame King | | Manufacturer Part Number | ACR-2a | | Model | ACR-2a | | Product Dimensions | 7 x 4 x 4 inches | ## Images ![Flame King ACR-2a 2-Stage Auto Changeover LP Propane Gas Regulator for RVs, Vans, and Trailers (Without Pigtails) - Image 1](https://m.media-amazon.com/images/I/71t9EDMwSqL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect fit. *by S***N on February 20, 2026* Perfect fit for my camper. Works like it should. The auto change over is great. ### ⭐⭐⭐⭐⭐ Replaced a recalled regulator, easy install. *by B***G on December 21, 2025* Purchase this to replace a regulator that was recalled by the RV manufacture, Keystone. This was much cheaper than trying to take it back to the dealership and leaving it there for a week for them to jerk around. Very simple to install ### ⭐⭐⭐⭐⭐ Dual regulator. *by G***I on March 6, 2026* Works great. Just what I needed. ## Frequently Bought Together - Flame King ACR-2a 2-Stage Auto Changeover LP Propane Gas Regulator for RVs, Vans, and Trailers (Without Pigtails) - Flame King (KT12ACR-2) 2-Stage Auto Changeover LP Propane Gas Regulator With Two 12 Inch Pigtails For RVs, Vans, Trailers - Flame King Propane Thermo Plastic Rubber Hose Assembly, 48-inch, 3/8-inch ID for RVs and Travel Trailers --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/298162043-flame-king-acr-2a-2-stage-auto-changeover-lp-propane](https://www.desertcart.pl/products/298162043-flame-king-acr-2a-2-stage-auto-changeover-lp-propane) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-10*