Soda Water Accessories Tank CO2 Cylinder Thread Size with W21.8-14 CGA320 G3/4 8mm Quick Disconnection Nipple Copper Material
How to choose the adapter nut thread:
W21.8-14(Din 477)/JIS M22-14
Diameter=21.8mm
Generally applicable to UK, Germany, France, Poland, Japan, Korea, Norway, Switzerland, Russia, Ukraine, South Africa, Sweden, Chile, Czech Republic, Singapore, etc.
CGA320
Diameter=20.8mm
Generally applicable to USA, Canada, Brasil, Colombia, Philippines, etc.
G3/4
Diameter=26.4mm
Generally applicable to Russia, Lithuania, Belarus, Czech Republic, Slovakia, Kazakhstan, etc.