# What is WFSU in plumbing?

## What is WFSU in plumbing?

The Water Supply Fixture Unit – WFSU – is defined by the American Uniform Plumbing Code (UPC) and is used to calculate the demand in water supply systems. The conversion can only be used for one or a few fixtures. When many fixtures are added up the number must be compensated due to the intermittent use of fixtures.

## How is Wfsu calculated?

The total wsfu required is calculated like this:

1. WCs: 4 X 10 wsfu = 40 wsfu.
2. 2 Lavs: 2 X 1.5 wsfu = 3 wsfu.
3. Total wsfu: 40 + 3 = 43.
4. π·πππππ=48β(48β46)β(45β43)(45β40) π·πππππ=47.2 gpm.

## How do I convert WSFU to GPM?

1. 1 WSFU = 1 GPM = 3.79 liter/min.
2. 1 in = 25.4 mm.

## How many DFU is a water closet?

P3004. 1 DWV System Load

TYPE OF FIXTURE OR GROUP OF FIXTURES DRAINAGE FIXTURE UNIT VALUE (d.f.u.)a
Laundry tub 2
Shower stall 2
Water closet (1.6 gallons per flush) 3
Water closet (greater than 1.6 gallons per flush) 4

## Do I need a vent for every drain?

Do I need a vent for every drain? Whether you’re putting in a tub, toilet, sink, or floor drain, they all need a plumbing vent on the drain to make it work properly. The drain will likely make gurgling noises. The water in the trap could siphon out, resulting in a potent sewer smell.

## How far can a vent pipe be from a drain?

The only vertical pipe of a combination drain and vent system shall be the connection between the fixture drain and the horizontal combination drain and vent pipe. The maximum vertical distance shall be 8 feet (2438 mm).

## Is 1 2 PEX enough for shower?

As long as the supply lines for the shower tie into a 3/4″ line, 1/2″ will be fine. I use a Delta shower faucet that already has pex adapters made into the valve body, no threading or sweating, just crimp and you’re done.

## What does the WFSU stand for in plumbing?

The Water Supply Fixture Unit – WFSU – is defined by the American Uniform Plumbing Code (UPC) and is used to calculate the demand in water supply systems. The conversion can only be used for one or a few fixtures. When many fixtures are added up the number must be compensated due to the intermittent use of fixtures.

## How are GPM and WFSU used in water supply?

The Water Supply Fixture Units – WFSU – are used to determine the water demand in water supply systems. One WFSU for a singel unit corresponds to one GPM. 1 WSFU = 1 GPM. This conversion can only be used for one or a few fixtures.

## How many WFSU are in a singel unit?

One WFSU for a singel unit corresponds to one GPM, or. 1 WSFU = 1 GPM. The conversion can only be used for one or a few fixtures. When many fixtures are added up the number must be compensated due to the intermittent use of fixtures.

## How is a WSFU related to a GPM?

The Water Supply Fixture Unit – WFSU – is defined by the American Uniform Plumbing Code (UPC) and is used to calculate the demand in water supply systems. One WFSU for a singel unit corresponds to one GPM, or. 1 WSFU = 1 GPM.