The 1500 LPM pump specification was revised to LF 16 shortly after this unit was delivered, and further upgraded to LF 20 in more recent years. The LF 8 light pump was similarly upgraded to LF 10. These were minimum outputs at 10AT with a 3 metre lift. In practice, most pumps actually had a somewhat higher output, and could usually pump around 50% more than their rated volume if supplied by a hydrant, depending on the level of mains pressure.
Added by Rob Johnson on 05 March 2024.