Brass Soda Refill Bottle Co2 Cylinder Refill Adapter Large to Small Mini with 2000psi Pressure Gauge Inflatable Valve TR21-4 to CGA320

Features:
Made of premium-grade brass, corrosion-resistant, wear-resistant and with long service life.
Enable you to fill CO2 from the larger bulk cylinder into smaller cylinders.
Smooth surface and better hand feeling.
Plus filter design makes the gas more pure and clean.
Easy to install and safe to use.

Specifications:
Color: metal
Material: brass
Working Pressure: 2000psi
Thread: TR21-4 to CGA320, W21.8-14
Height:47mm
Package Size: 8 * 5 * 2cm
Package Weight: 197g

Operation steps:
1.Cool in the freezer for 1 hour.
2.Screw the adapter to a commercial CO2 gas cylinder.
3.The empty CO2 cylinder is screwed into the adapter.
4.For most big cylinders: turn the big cylinder upside down. (if you can not refill when the CO2 tank standing, because some of the tank have not the dip tube (syphon tube)inside.)
5.Carefully Open the valve of the large gas bottle(The valve on the Cylinder closes the flow if it is opened too much. This will happen if you open the big cylinder too much / too fast. The trick is to open the big cylinder very carefully. You will hear the airflow. So to fill it successfully).
6.After about 15-20 sec., The cylinder is completely filled.
7.Close valve of the large gas bottle.
8.Opening the bleed screw to drain residue remaining gas.
9.Unscrew the CO2 cartridge – done.

Package List:
1 * Filling Adapter
4 * ASA Gasket (transparent)
1 * White Gasket
4 * Rubber Ring