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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 valves, manifolds 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 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 |
