Help with gas

[Susan]

Hi I hope some one out there can help me. I have just moved to Germany hoping after too many years of not having room to set up my glass and lamp work toys to start to play .I went with my torch to get my first gas tank to find that it docent fit my regulator .I know I can get one from the DIY shop but I don't want to use the wrong thing .I know that I should be using a flash back but I don't think the regulators in my shop have this built in . My torch is a Cricket that came with all the bits so I haven't had to get anything before .After years of longing to retire here and start playing I don't want to blow the house up !
If any one has had this problem and found out what to do please help .

Susan