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air admittance valve drain fixture unit dfu ratings

FIXTURE APPLICATIONS and Drain Fixture Unit (DFU) LOAD.


Traditional public Bathroom group having a Toilet (1.6 gpf), bathtub with shower, and sink DFU LOAD 6.


Traditional private Bathroom group having a Toilet (1.6 gpf), bathtub with shower, and sink DFU LOAD 5.


One public Toilet (1.6 gpf) DFU LOAD 4.


One private toilet (1.6 gpf) DFU LOAD 3.


Washing Machine DFU LOAD 3.


Bathtub with shower DFU LOAD 2.


Kitchen sink DFU LOAD 2.



Dishwasher DFU LOAD 2.


Shower (not greater than 5.7 gpm) DFU LOAD 2.


Bathroom sink DFU LOAD 2.


Drinking fountain DFU LOAD 0.5.


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