Gas bottle in Spain

Hey everyone! I will go to Spain this Sunday and i am considering buying a gas bottle directly there so it will be easier since i plan to stay a while.. I read that you pay a deposit and they give you a full one once yours it s empty but my question is.. do you know what kind of connection the bottle has? I have an italian system (see picture) and i am wondering if i will need an adaptor! Any advice is more than welcome:)