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Flame King 420lb 120 gallon ASME Empty Propane Tank Cylinder with Float Gauge & Lid

$1,599.95 $1,379.95

*** THIS ITEM IS NOT RETURNABLE ONCE SHIPPED DUE TO ITS SIZE AND SHIPPING METHOD (LTL). PLEASE ALLOW UP TO 2 BUSINESS DAYS PROCESSING TIME. CUSTOMER WILL NEED TO BE HOME TO RECEIVE THE ORDER AS IT WILL BE CURBSIDE DELIVERY. ***

  • High-Quality Valves - 1.25-inch ACME Fill valve, Service Valve, and Relief valve
  • Propane float gauge installed, can easily accommodate "Remote Ready Dial" - sold separately
  • Vacuum purged, Empty, X-ray and hydrostatic tested
  • Durable powder coated for long-lasting rust protection
  • Lid cover installed
  • DOES NOT NEED RE-CERTIFICATION: The advantage of ASME cylinders vs. DOT is that they DO NOT require recertification after 12 years from the Date of Manufacture.
  • ONE-YEAR WARRANTY: 1-year Manufacturer's Defect Warranty
  • Weight: 300 lb - Capacity: 120 gal - Dimensions: 30 x 30 x 54 inches

*Coupon code doesn't apply to items on SALE.

Out of stock
SKU: YSN420ASME-THN/A

Dependable Large-Capacity Propane for Home or Business

Power your home or business with peace of mind using the Flame King 420LB (120 Gallon) ASME Vertical Propane Cylinder. Perfect for residential and commercial setups, this high-capacity tank is ideal for space and water heating, cooking, backup generators, and more - giving you steady propane supply when you need it most.

Stationary and Worry-Free

Designed for stationary installation above or below ground (always follow local codes), this ASME tank arrives EMPTY, vacuum-purged, and ready to fill. Unlike DOT cylinders, your ASME tank does not require recertification after 12 years, saving you time, money, and hassle for years to come.

Built-In Gauge and Remote Ready

Easily keep track of your fuel level with the built-in propane float gauge, which can be upgraded with a Remote Ready Dial (sold separately) for even more convenience.

Premium Valves and Tough Construction

This tank is equipped with a 1.25-inch ACME Fill Valve, Service Valve, and Relief Valve for secure connections and smooth operation. The durable powder-coated finish and epoxy-coated base help protect against rust and corrosion for long-lasting outdoor performance. A protective lid is pre-installed to shield your valves from the elements.

Quality You Can Trust

Manufactured to strict ASME specifications in ISO 9002-certified facilities, every tank is x-ray and hydrostatic tested to ensure your safety. Backed by a one-year manufacturer's defect warranty, so you can store and use your propane with confidence.

Specifications:

  • Weight: 300 lb
  • Capacity: 120 gal
  • Dimensions: 30 x 30 x 54 inches

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.

 

Certification

Customer Reviews

Based on 12 reviews
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J
JDY
Great Deal!

We bought this for our RV site and it is just what we needed. The local propane company came out and set it up with the correct regulator and pipes and it has been working as expected for over a year now. It makes life so much easier compared to when I had to change out the 30 lb bottles every few days in the winter.

T
Troy Piscatelli

Great product fast delivery

U
Uncle Ike
Delivered to your home!

Brand new tanks with proper valves and labels. Shipped with a vacuum ready to fill. Lift gate truck brought them to my home. The cost of the tanks and delivery is a real deal. Built in Thailand to US standards. With all the new generator installs there just aren't cheap used tanks available.

G
Gmisenar
Exactly as described

The tanks (we purchased two) showed up after about 10 days. They were wrapped up and in great condition. I would definitely recommend.

C
Craig R.
Quality ASME certified tank

These quality certified tanks were a great value, shipped by liftgate truck, and delivered to my home. These tanks are currently running my whole home generator, are very well constructed with hinged lid on top, along with a clear to view gas gauge.

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