Replacement ultraviolet lamp for the Hanovia WS214 and WS216 disinfection systems. Medium-pressure UV lamps lose output steadily through life rather than failing outright, so they are replaced on elapsed running hours against the system’s dose record, not when they stop lighting. Note that this catalogue stocks a second lamp for the same WS214/216 fitment under part 130035-0651-01 — if you are matching to a lamp already in service, check the number printed on its end cap against both listings before ordering. Reference number 2244-0707.