• DIRECT REPLACEMENT FIT – Designed for 420LB propane cylinder tanks (Flame King Models YSN420ASME & YSN420DOT) for a secure and proper connection
• 1-1/4 NPT CONNECTION – Standard threading ensures compatibility with common tank openings and easy installation
• HEAVY-DUTY BRASS CONSTRUCTION – Built from high-quality brass for durability, corrosion resistance, and long service life
• LEAK-RESISTANT SEAL – Precision-machined threads with pre-applied sealant help prevent gas leaks and ensure safe operation
• RELIABLE FILLING PERFORMANCE – Engineered for efficient propane transfer and dependable use in residential, commercial, and industrial applications

The 420# ASME Fill Valve 1-1/4″ is a durable, direct replacement valve designed specifically for 420LB propane tanks, including Flame King models YSN420ASME and YSN420DOT. Featuring a standard 1-1/4″ NPT connection, it ensures a secure and proper fit for seamless installation. Constructed from high-quality brass, this fill valve offers excellent resistance to corrosion and wear, making it ideal for long-term use in demanding environments. Its precision-machined threads with pre-applied sealant help provide a tight, leak-resistant seal for safe and efficient propane filling. Built for reliability, this valve delivers consistent performance for residential, commercial, and industrial propane applications.

***The purchaser of this product assumes all responsibility and liability to ensure that it is the proper part for the application and complies with all National, Regional, Provincial, or local codes, regulations, and standards, including, but not limited to the applicable requirements of CGA, NFPA, CFR 49, and Transport Canada.