Flame King 11.9 Gal ASME RV Trailer Propane Cylinder Tank
Flame King 11.9 Gal ASME RV Trailer Propane Cylinder Tank
11.9 Gallon Horizontal ASME Propane Tank for RVs, Vans, and Trailers
Power your adventures with dependable propane storage built specifically for mobile applications. The Flame King 11.9 Gallon Horizontal ASME Propane Tank is designed for vans, RVs, campers, and trailers, providing a durable and reliable fuel solution for life on the road.
Premium Valves for Reliable Propane Control
This horizontal propane cylinder is equipped with high-quality premium valves, including a fill valve, relief valve, and service valve. These integrated components provide convenient access for filling, servicing, and pressure relief while supporting dependable operation.
Accurate Gauge Helps You Monitor Propane Levels
Keep track of your fuel supply with the installed propane level gauge. The accurate gauge makes it easy to monitor how much propane remains, helping you plan refills and avoid unexpectedly running out of fuel during your trip.
Heavy-Duty Steel Construction for Long-Lasting Protection
Constructed from high-grade welded steel, this tank is built to handle the demands of mobile use. A durable powder-coated exterior provides additional protection against the elements, helping maintain the tank's condition over years of use.
Vacuum-Purged and Ready for Propane Filling
The tank arrives empty, vacuum-purged, and ready to be filled with propane. Each cylinder is also X-ray and hydrostatically tested to help ensure dependable construction and performance before it reaches you.
ASME Certified with No 12-Year Recertification Requirement
As an ASME-certified propane tank, this cylinder offers an important advantage over DOT cylinders: it does not require recertification after 12 years from the date of manufacture. This provides a convenient, long-term propane storage solution with less maintenance and fewer certification concerns. The tank is also backed by a one-year manufacturer’s defect warranty.
Specifications:
- Tank Type: Horizontal ASME propane cylinder
- Capacity: 11.9 gallons
- Orientation: Horizontal
- Construction: High-grade welded steel
- Finish: Powder-coated exterior
- Valves: Fill valve, relief valve, and service valve
- Gauge: Installed propane level gauge
- Preparation: Empty, vacuum-purged, and ready for propane filling
- esting: X-ray and hydrostatic tested
- Certification: ASME certified
- Recertification: Not required after 12 years from date of manufacture
- Warranty: 1-year manufacturer’s defect warranty
- Applications: Vans, RVs, campers, and trailers

Quality and Service
At Flame King, we manufacture propane tanks and cylinders trusted worldwide for their exceptional quality and reliability. Our commitment to excellence goes beyond the products - we're dedicated to providing outstanding service to every customer. Each tank we produce exceeds industry standards and is crafted in award-winning facilities recognized for their focus on safety and quality. With Flame King, you can count on superior performance and complete peace of mind.
Certifications You Can Count On
At Flame King, we don't just build propane cylinders - we craft trusted companions designed to keep your adventures and daily needs fueled safely and reliably. Whether it's a compact 1 lb. tank for your next camping trip or a heavy-duty 420 lb. cylinder for commercial use, each product is made with care and precision.
Our portable propane cylinders meet strict Department of Transportation (DOT) and Transport Canada (TC) standards, so you can feel confident wherever you go. And for our ASME-certified tanks, they're crafted in facilities certified to ISO 9002 quality standards - because we believe safety and reliability should never be compromised.
With Flame King, you're not just buying a tank; you're investing in peace of mind that lasts.
Durable
Propane equipment faces tough conditions - so we build our tanks from rugged, premium materials designed to stand up to the challenge and deliver lasting performance you can trust.
Safe
At Flame King, safety isn't just a feature - it's our promise. Every tank is rigorously tested in real-world conditions to ensure reliable, dependable performance when it matters most.
Smart Design, Powerful Performance
At Flame King, we fuse cutting-edge technology with durable engineering to deliver propane solutions that are as intuitive as they are reliable - making every experience simpler, safer, and smarter.
Committed to a Greener Future
At Flame King, protecting the planet is at the heart of everything we do. That's why we pioneered the first refillable 1 lb propane tank- helping you reduce waste and embrace a more sustainable way to power your outdoor adventures.
About Us
At Flame King, we believe in the power of propane to fuel life's essential moments - from backyard cookouts to off-grid adventures. For over 20 years, we've been at the heart of it all, designing propane tanks and accessories that people rely on, day in and day out.
Built on a foundation of innovation and integrity, our products are engineered for performance, safety, and longevity. From our durable steel cylinders to our advanced heating and cooking solutions, every Flame King product is crafted to help you heat, power, and cook - wherever life takes you.
We've grown from a trusted manufacturer into a brand that supports sustainability, smarter energy use, and better outdoor living. Whether you're camping under the stars or firing up the grill in your own backyard, Flame King is there to keep the flame alive.

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