150 CU FT LARGE CAPACITY CYLINDER - High-volume multi-gas cylinder compatible with nitrogen, argon, helium, neon, and CO2/nitrogen mix. Suitable for TIG/MIG welding, HVAC purging, beverage carbonation, balloon inflation, leak detection, and industrial applications. Large capacity reduces refill frequency for busy commercial operations, fabrication shops, and high-volume users. CGA580 INERT GAS VALVE - Compatible with nitrogen, argon, helium, neon, and CO2/nitrogen mix inert gases. 3/4" NGT inlet thread ensures proper fitment with regulators and flow meters. Service pressure 2216 PSI. One cylinder serves multiple purposes depending on gas filled. HEAVY-DUTY STEEL CONSTRUCTION - Durable seamless steel cylinder with thick walls rated for 2216 PSI service pressure. Painted finish provides long-lasting durability. Includes steel cap and collar for valve protection. 7" diameter x 47" height, 61 lb tare weight. Letter S industry designation. Large professional-grade cylinder. HIGH-VOLUME PROFESSIONAL USE - Nitrogen for HVAC purging, brazing, beverage systems, industrial operations. Argon for TIG/MIG welding, metal fabrication, manufacturing. Helium for balloon inflation, large events, leak detection. CO2/nitrogen mix for beer gas and draft systems. Large capacity suitable for busy shops, commercial operations, industrial facilities, and high-volume applications requiring fewer refills. DOT APPROVED - SHIPS EMPTY - Meets DOT specifications for compressed gas cylinders. Ships empty per shipping regulations - fill at your local gas supplier with your choice of inert gas. Large 150 cu ft capacity provides extended operation time between refills for commercial and industrial operations. Cylinder color may vary (gray or cranberry). High-quality 150 cu ft steel inert gas cylinder. This is perfect for Helium, Nitrogen, Argon, or CO2/Nitrogen mixes. Includes steel cap. Heavy-duty construction with thick walls and a durable painted finish. The tank has great low-temperature delivery. The guarantee date of manufacture or hydro test is within 12 months. DOT, ISO/UN, and TC approved. All cylinders ship empty. Please consult your local compressed gas supplier for filling needs.