Working isobaric pressure not more 1.7....1.8 bars, 
depends on the reliability of your glass bottles
 
We can offer this adapters:
1) for models PEGAS EcoJet Next 2.0 or PEGAS Easy Jet.
 
Glass bottles must be for filling carbonated liquids 
(Your glass bottles must be certified for working with pressure)
 
Dimensions of the neck: height 18 mm, diameter 26mm, like noted in the diagram