Page 33 - CPVC Fire Sprinkler Products Installation Instructions & Technical Handbook
P. 33
Friction Loss
TYCO CPVC Pipe has a Hazen-Williams C-Value of 150. Pipe friction loss calculations shall be made according to NFPA Standards. Tables F1 and F2 show the allowance of friction loss for fittings, expressed in equivalent feet of pipe.
Table F1
Allowance for Friction Loss in Fittings3
TECHNICAL DATA 31
Fitting Size ANSI Inches
Tee Branch- ft
Elbow 90°1- ft
Elbow 45°- ft
Coupling-ft
Tee Run2- ft
3⁄4 1 1 1⁄4 1 1⁄2 2 2 1⁄2 3
3 5 6 8 10 12 15
4 5 6 7 9 12 13
1 1 2 2 2 3 4
1111122
1111122
3
Table F2
Allowance for Friction Loss in Fittings3
Fitting Size DN
Tee Branch- m
Elbow 90°1- m
Elbow 45°- m
Coupling- m
Tee Run2- m
DN20 DN25 DN32
0,9 1,5 1,8
1,2 1,5 1,8
0,3 0,3 0,6
0,3 0,3 0,3
0,3 0,3 0,3
DN40 DN50
2,4 3,1
2,1 2,7
0,6 0,6
0,3 0,3
0,3 0,3
DN65 DN80
3,7 4,6
3,7 4,0
0,9 1,2
0,6 0,6
0,6 0,6
1. The above stated friction loss values are for TYCO fittings only. When using other Listed TYCO CPVC 90° elbows with BLAZEMASTER products, consult the fitting manufacturer’s installation and design manuals.
2. Permanufacturer’stest.
