A 1/2″ water line of 40′ in length can supply 6 WSFU at 35-40 psi.Click to see full answer. Herein, what size water supply line do I need?In most cases, the main pipeline from the street to your home is either 3/4 or 1 inch in diameter, supply branches use 3/4-inch-diameter pipe, and pipes for individual components are 1/2 inch. Remember that water pressure decreases by a half-pound per square inch for every foot pipes extend above your water supply.Similarly, how many GPM is a fixture unit? The relationship between gallons per minute (gpm) and fixture unit is not constant, but varies with the number of fixture units. For example, 1000 FU is equivalent to 220 gpm, but 2000 FU is not double that, but is only 1.5 times as much, or 330 gpm. how many fixtures does a 3/4 water line have? In a residential setting, a 3/4″ line is usually a main. You can feed 2 fixtures with each 1/2″ branch off the 3/4″ main. Like most everything there are different reasons for doing different things.How many fixture units is a water heater?Pressure range, 40 to 60 PSI, at a developed distance of 80 feet for copper pipe. A standard one-bath home with kitchen sink, dishwasher, water heater, clothes-washer, 1.6 tank toilet, lavatory, tub/shower combo and two hose bibs would be counted as 18 fixture units.
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