User Guide

Plumbing Design Assistance Manual | Appendix C – Fitting equivalent length l 109
ProPEX LF brass commercial
ball valve (full port)
Nominal size (in)
Avg. C
v
Equivalent
length (ft)
½ PEX x ½ PEX 7.0 2.8
¾ PEX x ¾ PEX 18.7 3.3
1 PEX x 1 PEX 29.0 4.3
1¼ PEX x 1¼ PEX 54.7 4.8
1½ PEX x 1½ PEX 68.2 5.7
2 PEX x 2 PEX 132.2 7.1
Flange adapters
Nominal size (in) Flow path
Avg. C
v
Eq. length (ft)
2½ PEX x flange Through 131.5 7.6
3 PEX x flange Through 310.7 2.2