PLS Butane Hose Assembly 450mm. High pressure black hose to (and marked) EN 16436-1 Class 3. 6.3mm i.d., 16.3mm o.d., 30 bar working pressure, 90 bar burst pressure. A self adhesive advisory label isattached to every hose. Gas Type - Butane. Length 450mm. Inlet - Butane Nut. Outlet - W20.