PLS Propane Hose Assembly 750mm. 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 is attached to every hose. Gas Type – Butane. Length 750mm. Inlet – Butane Nut. Outlet – W20.