{"product_id":"flame-king-ysn401-steel-propane-tank-40-lb-refillable-opd-safety","title":"Flame King YSN401 Steel Propane Tank 40 Lb - Refillable, OPD Safety","description":"\u003cp\u003eIn this review the Flame King YSN401 40 lb steel propane tank is evaluated for backyard grillers, RV owners, and contractors who need extended runtime without swapping tanks. The bottom line is simple: this empty, pre-purged cylinder delivers dependable capacity and required safety features, with the single biggest reason to buy being its combination of a large 40 lb capacity and an overfill prevention device that most fill stations require. It is a practical choice for anyone who wants fewer tank swaps and standard connections that work with common appliances.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmpty, ready for fill:\u003c\/strong\u003e Arrives pre-purged and vacuum ready so professionals can safely refill it without additional preparation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverfill Prevention:\u003c\/strong\u003e Fitted with an OPD valve that prevents overfilling and ensures compliance with refill requirements in most states.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Made from high-grade welded steel and powder coated to resist rust for long service life in outdoor settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertified safety testing:\u003c\/strong\u003e X-ray and hydrostatic tested and certified to DOT and Transport Canada standards for secure transport in the US and Canada.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard connection:\u003c\/strong\u003e Uses a common-size valve so it connects as easily as smaller tanks to RVs, trailers, heaters, and grills.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe Flame King 40 lb tank is ideal for homeowners with large grills, RV and trailer owners needing longer run times, and tradespeople who use propane heaters or torches on job sites. Its capacity is roughly equivalent to two 20 lb tanks, so it reduces refill frequency and handles heavy-duty usage patterns.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include users who need a permanently mounted tank with custom fittings or those who require non-OPD valves for very specific older equipment; this unit is targeted at refillable, mobile use with standard connections and legal safety features.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLarge 40 lb capacity gives extended runtime and fewer refill trips.\u003c\/li\u003e\n\u003cli\u003eOPD valve provides required overfill protection and wider refill acceptance.\u003c\/li\u003e\n\u003cli\u003eSolid welded steel construction and powder coat reduce corrosion risk and extend service life.\u003c\/li\u003e\n\u003cli\u003eDOT and Transport Canada testing means safe transport across borders and job sites.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAs an empty cylinder, it requires an initial fill and cannot be used out of the box.\u003c\/li\u003e\n\u003cli\u003eOne reported handling issue noted a bent handle; careful handling during transport is advised.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e40 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition on arrival\u003c\/td\u003e\n\u003ctd\u003eEmpty, pre-purged, vacuum ready\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve\u003c\/td\u003e\n\u003ctd\u003eOverfill Prevention Device (OPD), standard connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-grade welded steel, powder coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety certifications\u003c\/td\u003e\n\u003ctd\u003eDOT and Transport Canada; X-ray and hydrostatic tested\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical uses\u003c\/td\u003e\n\u003ctd\u003eRV, trailer, grills, attachable heaters, job site equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Flame King YSN401 40 lb steel propane tank is a practical, value-oriented option for anyone who needs longer run times and reliable safety features. Its OPD valve and certified testing make it widely refillable and safe to transport, and the durable build is suited to outdoor use. Buy it if you want fewer tank swaps and standard compatibility; choose a different solution only if you need factory-filled delivery or custom fittings.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs this tank safe to transport?\u003c\/strong\u003e\u003cbr\u003eYes. It is X-ray and hydrostatic tested and certified to DOT and Transport Canada standards for safe transport.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this connect to my RV or grill?\u003c\/strong\u003e\u003cbr\u003eYes. The tank uses a standard-size connection valve compatible with common RV, trailer, and grill fittings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it arrive filled?\u003c\/strong\u003e\u003cbr\u003eNo. It ships empty, pre-purged and vacuum ready for filling at a certified refill location.\u003c\/p\u003e","brand":"Flame King","offers":[{"title":"Default Title","offer_id":48609846264027,"sku":"B004LZN5ES","price":160.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61ahwbNlHBL._AC_SL1500.jpg?v=1778381764","url":"https:\/\/gearmusthave.com\/products\/flame-king-ysn401-steel-propane-tank-40-lb-refillable-opd-safety","provider":"GearMustHave","version":"1.0","type":"link"}