The Inlet Adapter Is For 10mm Inner Diameter Hose Directly Fixed By Clips Not Suitable For Hose With Connectors This Is Normally Used For Glass Tube Heater But Dimensions May Have Difference For Different s So Compare The Sizes Is Neccessary Before Order Propane Gas System Include Pilot Burner And Aaa Battery Igniter With Safety Control Valve And Dump Switch Safety Kit Portable Propane Gas Glass Tube Heater Control Box Working Instruction After you receive the package, Please follow the installation tips and instructions; 1)Check the package if all parts are included. 2)Insert one AA battery (#5) into the igniter and screwed the switch. (Need To Be Prepared In Advance, Products Do Not Contain Batteries) 3)Insert your regulator hose ( ID around 10mm) and fasten by the hose clips till its tight enough. 4)Connect the regulator to your propane tanks. 5)Inlet pressure is 30 mbar. Installation Ready!!! How to work 1)Turn the knob 90 degrees at the pilot position and keep pushing. 2)At the same, use another hand push the red button igniter till the pilot burner ignites 3)Release your hands, turn the valve to change the flame you want. Tips: When turn the knob to pilot position, please hold it for seconds, at the same time push the igniter, do not release your hands before push the read button igniter. Remember close the gas tank if case you do not want to use. It should be noted that due to the iterative upgrade of the product, the style of the received product may differ slightly from the picture. This is a normal phenomenon, and the functionality of the product will not be affected.