PEX Pipe Pressure Ratings

06/21/2016 0 Comment(s)

Sizing and Design for PEX plumbing system

pressure ratings for PEX pipe

Note: Few of states plumbing codes require that liquid velocity through system cannot exceed 8 ft/s. This cut-off is highlighted on the first table with name "Pressure Drop Rating for PEX Tubing"

PEX Fitting Equivalent Length Chart


Equivalent Tubing Length: Along with the pressure loss through the supply tubing, any pressure loss through fittings, shut off valves, ball valvesmanifolds in the system must be taken into account. Below is a table that shows the equivalent length of tubing in feet per one PEX fitting.

 

PEX Fitting Equivalent Length (Feet of Tubing)

PEX Brass Fitting

PEX Tubing Size

3/8"

1/2"

3/4"

1"

Coupling

2.7

2.8

3.5

1.0

Elbow

9.2

8.0

9.2

7.8

Tee - Branch

9.6

7.1

8.6

5.5

Tee - Run

3.3

2.4

3.5

2.7

 
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