Plumbing Design
Kitec’s smooth inner surface provides the basis for excellent long term flow. Its larger inside diameters also permit greater fixture load than other plastic plumbing systems. And Kitec is easily bent to form changes in direction and 90o turns – this means fewer fittings and fewer flow interruptions.
The following tables provide all the information you need to size your plumbing system. Pipe flow and head loss per hundred feet are shown for all Kitec pipe sizes. Allowance for fittings are also shown in terms of equivalent feet of pipe. And finally, the UPC and Canadian Plumbing Code Fixture Tables provide guidance on allowable fixture loads.
Head Loss (psi/100 ft. of Kitec) vs. Flow Rate (U.S. GPM) |
Flow Rate U.S. GPM |
3/8″ | 1/2″ | 5/8″ | 3/4″ | 1″ | |||||
Head Loss psi/c.ft. |
Velocity FT./s |
Head Loss psi/c.ft. |
Velocity FT./s |
Head Loss psi/c.ft. |
Velocity FT./s |
Head Loss psi/c.ft. |
Velocity FT./s |
Head Loss psi/c.ft. |
Velocity FT./s |
|
0.1 | 0.1 | 0.3 | 0.02 | 0.2 | 0.01 | 0.1 | 0.002 | 0.07 | 0.001 | 0.04 |
0.2 | 0.4 | 0.7 | 0.1 | 0.4 | 0.02 | 0.2 | 0.01 | 0.1 | 0.002 | 0.08 |
0.3 | 0.8 | 1.0 | 0.2 | 0.6 | 0.04 | 0.3 | 0.02 | 0.2 | 0.005 | 0.1 |
0.4 | 1.3 | 1.3 | 0.3 | 0.7 | 0.07 | 0.4 | 0.03 | 0.3 | 0.009 | 0.2 |
0.5 | 1.9 | 1.7 | 0.5 | 0.9 | 0.1 | 0.5 | 0.04 | 0.3 | 0.01 | 0.2 |
0.6 | 2.7 | 2.0 | 0.6 | 1.1 | 0.2 | 0.6 | 0.05 | 0.4 | 0.02 | 0.3 |
0.7 | 3.6 | 2.3 | 0.9 | 1.3 | 0.2 | 0.7 | 0.07 | 0.5 | 0.02 | 0.3 |
0.8 | 4.7 | 2.7 | 1.1 | 1.5 | 0.3 | 0.8 | 0.09 | 0.5 | 0.03 | 0.3 |
0.9 | 5.8 | 3.0 | 1.4 | 1.7 | 0.3 | 0.9 | 0.1 | 0.6 | 0.04 | 0.4 |
1.0 | 7.0 | 3.3 | 1.6 | 1.8 | 0.4 | 1.0 | 0.1 | 0.7 | 0.05 | 0.4 |
2.0 | 25.4 | 6.7 | 5.9 | 3.7 | 1.5 | 2.1 | 0.5 | 1.3 | 0.2 | 0.9 |
3.0 | 53.8 | 10.0 | 12.5 | 5.5 | 3.1 | 3.1 | 1.0 | 2.0 | 0.4 | 1.3 |
4.0 | - | - | 21.3 | 7.3 | 5.3 | 4.1 | 1.8 | 2.6 | 0.6 | 1.7 |
5.0 | - | - | 32.2 | 9.2 | 8.0 | 5.1 | 2.7 | 3.3 | 0.9 | 2.1 |
6.0 | - | - | 45.1 | 11.0 | 11.1 | 6.2 | 3.8 | 4.0 | 1.3 | 2.5 |
7.0 | - | - | - | - | 14.8 | 7.2 | 5.0 | 4.6 | 1.7 | 3.0 |
8.0 | - | - | - | - | 19.0 | 8.2 | 6.4 | 5.3 | 2.2 | 3.4 |
9.0 | - | - | - | - | 23.6 | 9.3 | 8.0 | 5.9 | 2.7 | 3.8 |
10.0 | - | - | - | - | 28.6 | 10.3 | 9.7 | 6.6 | 3.3 | 4.2 |
11.0 | - | - | - | - | - | - | 11.6 | 7.2 | 3.9 | 4.6 |
12.0 | - | - | - | - | - | - | 13.6 | 7.9 | 4.6 | 5.0 |
13.0 | - | - | - | - | - | - | 15.7 | 8.5 | 5.3 | 5.5 |
14.0 | - | - | - | - | - | - | 18.0 | 9.2 | 6.1 | 5.9 |
15.0 | - | - | - | - | - | - | 20.5 | 9.9 | 6.9 | 6.3 |
16.0 | - | - | - | - | - | - | 23.1 | 10.5 | 7.8 | 6.7 |
17.0 | - | - | - | - | - | - | - | - | 8.7 | 7.1 |
18.0 | - | - | - | - | - | - | - | - | 9.7 | 7.6 |
19.0 | - | - | - | - | - | - | - | - | 10.7 | 8.0 |
20.0 | - | - | - | - | - | - | - | - | 11.8 | 8.4 |
21.0 | - | - | - | - | - | - | - | - | 12.9 | 8.9 |
22.0 | - | - | - | - | - | - | - | - | 14.1 | 9.2 |
23.0 | - | - | - | - | - | - | - | - | 15.3 | 9.7 |
24.0 | - | - | - | - | - | - | - | - | 16.5 | 10.1 |
25.0 | - | - | - | - | - | - | - | - | 17.8 | 10.5 |
HEAD LOSS (kPa/100 m of Kitec) vs. FLOW RATE (L/m) |
Flow |
9 mm |
12 mm |
16 mm |
20 mm |
25 mm |
|||||
HeadLoss |
Velocity |
Head Loss |
Velocity |
Head Loss |
Velocity |
Head Loss |
Velocity |
Head Loss |
Velocity |
|
3 |
108.71 |
0.82 |
24.04 |
0.44 |
5.93 |
0.25 |
2 |
0.16 |
0.68 |
0.1 |
6 |
392.45 |
1.64 |
86.78 |
0.88 |
21.41 |
0.5 |
7.23 |
0.32 |
2.44 |
0.2 |
9 |
831.58 |
2.47 |
183.88 |
1.33 |
45.36 |
0.75 |
15.32 |
0.48 |
5.17 |
0.31 |
12 |
1,416.75 |
3.29 |
313.27 |
1.77 |
77.27 |
1 |
26.09 |
0.64 |
8.81 |
0.41 |
15 |
- |
- |
473.58 |
2.21 |
116.82 |
1.24 |
39.45 |
0.8 |
13.32 |
0.51 |
18 |
- |
- |
663.8 |
2.65 |
163.74 |
1.49 |
55.29 |
0.96 |
18.67 |
0.61 |
21 |
- |
- |
883.13 |
3.1 |
217.84 |
1.74 |
73.56 |
1.11 |
24.84 |
0.71 |
24 |
- |
- |
- |
- |
278.96 |
1.99 |
94.19 |
1.27 |
31.81 |
0.82 |
27 |
- |
- |
- |
- |
346.95 |
2.24 |
117.15 |
1.43 |
39.56 |
0.92 |
30 |
- |
- |
- |
- |
421.71 |
2.49 |
142.4 |
1.59 |
48.08 |
1.02 |
33 |
- |
- |
- |
- |
503.12 |
2.74 |
169.89 |
1.75 |
57.36 |
1.12 |
36 |
- |
- |
- |
- |
591.09 |
2.98 |
199.59 |
1.91 |
67.39 |
1.22 |
39 |
- |
- |
- |
- |
685.54 |
3.23 |
231.48 |
2.07 |
78.16 |
1.32 |
42 |
- |
- |
- |
- |
- |
- |
265.54 |
2.23 |
89.66 |
1.43 |
45 |
- |
- |
- |
- |
- |
- |
301.73 |
2.39 |
101.88 |
1.53 |
48 |
- |
- |
- |
- |
- |
- |
340.04 |
2.55 |
114.82 |
1.63 |
51 |
- |
- |
- |
- |
- |
- |
380.44 |
2.71 |
128.46 |
1.73 |
54 |
- |
- |
- |
- |
- |
- |
422.92 |
2.87 |
142.81 |
1.83 |
57 |
- |
- |
- |
- |
- |
- |
467.46 |
3.02 |
157.85 |
1.94 |
60 |
- |
- |
- |
- |
- |
- |
514.05 |
3.18 |
173.58 |
2.04 |
63 |
- |
- |
- |
- |
- |
- |
562.66 |
3.34 |
189.99 |
2.14 |
66 |
- |
- |
- |
- |
- |
- |
- |
- |
207.08 |
2.24 |
69 |
- |
- |
- |
- |
- |
- |
- |
- |
224.85 |
2.34 |
72 |
- |
- |
- |
- |
- |
- |
- |
- |
243.29 |
2.45 |
75 |
- |
- |
- |
- |
- |
- |
- |
- |
262.4 |
2.55 |
78 |
- |
- |
- |
- |
- |
- |
- |
- |
282.17 |
2.65 |
81 |
- |
- |
- |
- |
- |
- |
- |
- |
302.6 |
2.75 |
84 |
- |
- |
- |
- |
- |
- |
- |
- |
323.68 |
2.85 |
87 |
- |
- |
– |
- |
- |
- |
- |
- |
345.42 |
2.95 |
90 |
- |
- |
- |
- |
- |
- |
- |
- |
367.8 |
3.06 |
93 |
- |
- |
- |
- |
- |
- |
- |
- |
390.83 |
3.16 |
96 |
- |
- |
- |
- |
- |
- |
- |
- |
414.49 |
3.26 |
Approximate Allowance for Kitec FIttings in Feet of Straight Pipe Kitec Fittings |
Size of
|
Male |
Male |
90° |
Tee |
Tee |
Copper |
1/2 (12) | 2.0 (0.60) | 3.0 (0.91) | 7.5 (2.30) | 2.5 (0.67) | 8.0 (2.4) | 2.0 (0.60) |
5/8 (15) | 2.0 (0.60) | 3.0 (0.91) | 8.0 (2.40) | 2.5 (0.67) | 10.0 (3.1) | 2.0 (0.60) |
3/4 (20) |
2.0 (0.60) |
3.0 (0.91) |
8.5 (2.60) |
2.5 (0.67) |
10.5 (3.2) |
1.5 (0.46) |
1 (25) |
2.0 (0.60) |
3.0 (0.91) |
9.0 (2.70) |
2.5 (0.67) |
11.0 (3.4) |
1.5 (0.46) |
* Forward flow direction: Standard schedule steel pipe to Kitec. |
||||||
** Reverse flow direction: Kitec to standard schedule steel pipe. |
CANADIAN PLUMBING CODE |
Water |
Water |
Maximum Allowance Length in Feet (Meters) |
||||||||||||||
40 (12) |
60 (18) |
80 (24) |
100 (30) |
150 (46) |
200 (61) |
250 (76) |
300 (91) |
400 (122) |
500 (152) |
600 (183) |
700 (213) |
800 (244) |
900 (274) |
1000 (305) |
||
Pressure Range Number of Fixture Units Served |
||||||||||||||||
200 to 310 kPa |
||||||||||||||||
3/4 | 1/2 |
6 |
5 |
4 |
3 |
2 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
|
3/4 | 5/8 |
12 |
10 |
9 |
8 |
5 |
4 |
4 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
|
3/4 | 3/4 |
18 |
16 |
14 |
12 |
9 |
6 |
6 |
5 |
4 |
3 |
3 |
2 |
2 |
2 |
|
3/4 | 1 |
29 |
25 |
23 |
21 |
17 |
15 |
15 |
12 |
10 |
9 |
7 |
6 |
6 |
6 |
|
1 |
1 |
36 |
31 |
27 |
25 |
20 |
17 |
17 |
13 |
12 |
8 |
8 |
6 |
6 |
6 |
|
311 to 413 kPa |
||||||||||||||||
3/4 | 1/2 |
9 |
7 |
6 |
5 |
4 |
3 |
2 |
2 |
1 |
1 |
1 |
0 |
0 |
0 |
|
3/4 | 5/8 |
18 |
15 |
12 |
11 |
9 |
7 |
6 |
5 |
3 |
2 |
2 |
2 |
1 |
1 |
|
3/4 | 3/4 |
27 |
23 |
19 |
17 |
14 |
11 |
9 |
8 |
6 |
5 |
4 |
4 |
3 |
3 |
|
3/4 | 1 |
44 |
40 |
36 |
33 |
28 |
23 |
21 |
19 |
17 |
14 |
12 |
10 |
9 |
8 |
|
1 |
1 |
60 |
47 |
41 |
36 |
30 |
25 |
23 |
20 |
18 |
17 |
12 |
10 |
9 |
8 |
|
Over 413 kPa |
||||||||||||||||
3/4 | 1/2 |
11 |
8 |
7 |
6 |
5 |
4 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
|
3/4 | 5/8 |
21 |
18 |
16 |
15 |
11 |
9 |
7 |
7 |
5 |
4 |
3 |
3 |
3 |
2 |
|
3/4 | 3/4 |
31 |
28 |
24 |
22 |
17 |
13 |
11 |
10 |
8 |
7 |
6 |
6 |
5 |
4 |
|
3/4 | 1 |
61 |
53 |
47 |
42 |
35 |
30 |
27 |
24 |
21 |
17 |
14 |
13 |
12 |
12 |
|
1 |
1 |
72 |
66 |
55 |
48 |
38 |
32 |
29 |
26 |
22 |
18 |
14 |
13 |
12 |
12 |
Proposed |
UNIFORM PLUMBING CODE |
Water |
Water |
Maximum Allowance Length in Feet (Meters) |
||||||||||||||
40 (12) |
60 (18) |
80 (24) |
100 (30) |
150 (46) |
200 (61) |
250 (76) |
300 (91) |
400 (122) |
500 (152) |
600 (183) |
700 (213) |
800 (244) |
900 (274) |
1000 (305) |
||
Pressure Range Number of Fixture Units Served |
30 to 45 psi |
||||||||||||||||
3/4 |
1/2 |
6 |
5 |
4 |
3 |
2 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
3/4 |
3/4 |
16 |
16 |
14 |
12 |
9 |
6 |
5 |
5 |
4 |
4 |
3 |
2 |
2 |
2 |
1 |
3/4 |
1 |
29 |
25 |
23 |
21 |
17 |
15 |
13 |
12 |
10 |
8 |
6 |
6 |
6 |
6 |
6 |
1 |
1 |
36 |
31 |
27 |
25 |
20 |
17 |
15 |
13 |
12 |
10 |
8 |
6 |
6 |
6 |
6 |
46 to 60 psi |
||||||||||||||||
3/4 |
1/2 |
7 |
7 |
6 |
5 |
4 |
3 |
2 |
2 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
3/4 |
3/4 |
20 |
20 |
19 |
17 |
14 |
11 |
9 |
8 |
6 |
5 |
4 |
4 |
3 |
3 |
3 |
3/4 |
1 |
39 |
39 |
36 |
33 |
28 |
23 |
21 |
19 |
17 |
14 |
12 |
10 |
9 |
8 |
8 |
1 |
1 |
39 |
39 |
39 |
36 |
30 |
25 |
23 |
20 |
18 |
15 |
12 |
10 |
9 |
8 |
8 |
Over 60 psi |
||||||||||||||||
3/4 |
1/2 |
7 |
7 |
7 |
6 |
5 |
4 |
3 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
0 |
3/4 |
3/4 |
20 |
20 |
20 |
20 |
17 |
13 |
11 |
10 |
8 |
7 |
6 |
6 |
5 |
4 |
4 |
3/4 |
1 |
39 |
39 |
39 |
39 |
35 |
30 |
27 |
24 |
21 |
17 |
14 |
13 |
12 |
12 |
11 |
1 |
1 |
39 |
39 |
39 |
39 |
38 |
32 |
29 |
26 |
22 |
18 |
14 |
13 |
12 |
12 |
11 |