Flame King YSN401 40 Lb Steel Propane Tank with OPD – Overflow Protection, DOT Certified

Overview

Meet Flame King YSN401, a 40 Lb steel propane tank designed for longevity and reliable storage in everyday setups, from home grilling to RV adventures. The tank ships pre-purged and vacuum-ready, meaning it’s prepared for propane filling right out of the box. The combination of a robust welded steel body and a powder-coated finish delivers a solid, durable feel that looks clean and stays protected through regular use.

Designed for real-world practicality, this tank balances strength with straightforward compatibility, so you can focus on your activities rather than the equipment.

Safety and compliance you can rely on

The YSN401 includes an Overflow Prevention Device (OPD) valve to help prevent overfilling—an important safety feature that is required by law in many states. The tank has undergone X-ray and hydrostatic testing and carries both DOT and Transport Canada certifications, supporting safe handling and transport across the US and Canada.

Versatile, easy to connect

With a standard-size connection valve, this 40 lb cylinder integrates smoothly with RVs, trailers, propane tank attachable heaters, and other compatible accessories. Flame King offers a broad lineup—from 1 lb to 100 lb tanks—so you can scale your setup while keeping a consistent brand standard.

Real-world use scenarios

Imagine this tank fueling a camp stove during a weekend outdoors, powering a space heater on a chilly evening at the campground, or topping off an RV’s propane supply before a road trip. The YSN401’s sturdy construction and safety features provide a calm, dependable fuel source in these everyday moments.

Key features at a glance

• EMPTY TANK: Pre-purged vacuum ready for filling with propane; built from high-grade welded steel and powder coated to prevent rust
• OVERFILL PREVENTION DEVICE: OPD valve reduces overfilling risk and helps meet regulatory requirements
• SAFETY TESTS AND CERTIFICATIONS: X-ray and hydrostatic tested; DOT and Transport Canada certified
• US & CA compatibility: standard connection valve designed for easy integration with RVs, trailers, heaters, and accessories
• BRAND RELIABILITY: Flame King offers a complete range of propane storage solutions with quality you can count on

Product snapshot

40 lb capacity, white finish, durable construction, ready for propane deployment today.