1. Material: The outdoor flat tank inflation valve is made of Metal, which is and -. Safe, convenient and easy to control. 2. Safety: Gas tank filling connection valve adapter provides a safe and airtight connection between flat gas tanks or cylinders. 3. Easy to Install: Quick connect attachment, no tools required, easy to hold, install and connect. 4. Easy to Carry: The inflation valve of the flat air tank is small in size, easy to carry, and can be used repeatedly. NOTE: After inflation, close all valves. Usage: A. You need a inflatable valve, a empty gas container, a cylinder, and a electronic scale. B. Please make sure that gas container connection valve is closed before gas charging. C. Connect the cylinder interface to the cylinder, unscrew the cylinder valve and check whether there is gas escaping. D. Let the cylinder lie down or upside down, and connect to gas container, Put the connected gas container on the scale, open the cylinder knob, then you can see flow in the pipe. E. After gas charging, please shut all the valves. Flat Tank Filling Valve: Russian Inflation Valve Gas Tank Refilling Connector Adapter: Flat Cylinder Filling Connector Model: Flat Tank Filling Valve Name: Russian Inflation Valve Applicable areas: Russia, Germany and other Central and Eastern European regions Colour:As Shown Material:Metal Package Contents: 1X Outdoor Camping Gas Stove Propane Refill Adapter Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.