High-Efficiency: Tthe performance of boilder with ultra-high thermal conversion will satisfaction! The pressure of double combustion tube is available up to 0.4MPa in approx 8min and the safety valve pressure is 0.5MPa for safety during use. Application Ranges: The best retro and collectible artwork is a gospel for steam model enthusiasts.Instructions: Please limit the amount of water in 3/5 of full capacity and the pressure under 0.5MPa. Pay attention to the burning duration to avoid dry burning and pump out the remaining water inside after use. In conjunction with fire control system for gas-saving and more safety, it is better to use butane as fuel. Material: Brass + Bixa Orellana. Total Length (Including Spark Plug): 252mm. Safety Valve Pressure: 0.5MPa. Product Dimensions: 10.5 x 10.5 x 25.2cm. This item is in the category "Toys & Hobbies\Radio Control & Control Line\RC Model Vehicle Parts & Accs\Engine, Exhaust & Fuel Systems\Other Engine/Exhaust/Fuel Sys. The seller is "sylvian1975-rc" and is located in this country: HK. This item can be shipped worldwide.