Welcome to the store! 1. Made of brass material, which is sturdy and ensures maximum durability. 2. Good sealing performance, no air leakage when connected to the cylinder. 3. Exquisite workmanship, excellent performance, practical soda accessories. 4. Easy to use and install, a perfect replacement for the old and broken one. 5. The installation method is simple and practical, more convenient to use. Item Type: Soda Valve Material: Brass Thread Size: G1/2-14 / TR21-4 Thread Interface: Large carbon dioxide cylinder thread CGA320 or 0.825-14NGO (US TR21-4, G1/2) Applicable Countries: USA, Canada, Brazil, Colombia, Philippines Weight: Approx. 352g / 12.4oz Instructions: 1. Connect the filling adapter to the large CO2 cylinder equipped with a siphon securely with an adjustable wrench. 2. Remove any residual gas from the cylinder to be refilled. 3. Freeze the empty cylinder in the refrigerator (recommended to freeze for at least 3 hours). 4. Weigh the cooled empty cylinder on the scale. 5. Connect the adapter to the CO2 tank equipped with a siphon. 6. Slightly open the CO2 tank valve and charge the empty cylinder for 7 to 10 seconds. You can hear the sound of incoming CO2 gas. 7. Remove the weight from the adapter and weigh it. If the weight of the empty cylinder is subtracted from the measured weight, that is the charging amount. 1 x Soda Valve 3 x Gasket Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!