BVD is a brand of men's underwear, which are commonly referred to as BVDs.. BVD stands for Bradley, Voorhees & Day, the New York City firm that initially manufactured underwear of this name for both men and women.
Switching to an ultra-low flush toilet is an effective way to make your home or office more water efficient. Ultra-low flush (ULF) toilets use no more than 1.6 gallons per flush (gpf) rather than 3.5 to 7 gallons of water used by other designs. That's why new plumbing codes are requiring ULF toilets to be installed in all new construction, bathroom remodels and additions and toilet replacements.
Single-lever flush systems are easier to operate since every flush is rated at 1.28 gpf. However, dual-lever flushing offers two choices, a half flush for liquids and a full 1.6 gallons for solids. This allows full flushing control, but dual-flush toilets also average about 1.28 gpf.