Water fill cap for manually filled Stirovap Big Steam 3, Model 303 Series steam generators. Theses caps are 1/2″ BSP and act as a safety device should the generator over pressurise. These caps will also fit to generators requiring a 1/2″ BSP thread. Replacement washers for the caps can be found here. SKU: M.1021 Categories: Safety Valves, Spare Parts
