Symbol for liters per flush, a specification found on toilets. U.S. government regulations now require plumbers to install only low-flush toilets of 6.0 Lpf or less. 1 Lpf = 0.264 U.S. gallon per flush (gpf)
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}