A pressurised refill canister 5 containing a composition including a propellant. The canister has an outlet valve 20 having a stem 6 biased to a closed position by a first resilient member. The stem 6 has a maximum outer diameter of greater than 3 mm. At the outlet end of the stem, at least part of the wall of the stem extends inwardly from the outside diameter for at least 50% of the radius.一種加壓再填充罐5,包括複合物,該複合物包括一進燃料。該再填充罐具有出口閥20,該出口閥20具有柄部6,該柄部由第一彈力構件偏移至關閉位置。該柄部6具有大於3mm的最大外部直徑。在該柄部的該出口端處,該柄部的該壁部的至少部分從該外側直徑向內延伸達該半徑的至少50%。1‧‧‧模擬香菸2‧‧‧主要殼體部3‧‧‧薄卡套4‧‧‧凹槽5‧‧‧再填充罐6‧‧‧柄部7‧‧‧再填充出口孔8‧‧‧抽屜部10‧‧‧彈簧
