YSDT - LP-Gas Shutoff Valves are UL listed and approved and as per UL 1769 Standard and meets the requirement of Australian Standard. The LCC27 standard is specifically for propane (LPG) valves, and it is used primarily in Australia and New Zealand. This standard was introduced to replace the older POL (Prest-O-Lite) valve in these countries to improve safety and compatibility. The LCC27 valve system is designed to prevent cross-threading, improve gas flow, and reduce the risk of leaks.