Install Instructions

137
IM-PR 566442 1114 (Design Manual)
Pressure Drop Table
Expressed as PSI/ft. Pressure Drop
SIZE
GPM ½" ⅝" ¾" 1"
1 .016 .007 .003 .001
1.5 .034 .014 .006 .002
2.2 .069 .034 .013 .004
2.5 .087 .043 .016 .005
3 .122 .050 .023 .007
3.5 .162 .080 .030 .009
4 .208* .100 .039 .011
5 .314 .154 .059 .017
6 .440 .181 .082 .024
7 .586 .287 .109 .032
8 .368 .140 .041
9 .457 .174* .051
10 .556 .211 .062
11 .252 .074
12 .296 .087
13 .343 .101
14 .116
15 .132*
16 .148
17 .166
18 .184
19 .204
20 .224
21 .245
22 .267
Quality Assurance
When the product is marked with the ASTM
F876 designation, it afrms that the product was
manufactured, inspected, sampled and tested in
accordance with these specications and has been
found to meet the specied requirements.
Certifications
- Tested for health effects to ANSI/NSF standard
61 and performance to ANSI/NSF standard 14.
PEX 5006 - Tested and listed to the NSF-pw (CL5) Chlorine
resistance rating for an end use condition of 100% @ 140°F
per ASTM F876, which is the highest Chlorine resistance
rating available through ASTM. When the product is marked
with the PEX 5006 NSF-pw (CL5) designation, it afrms the
product is approved for use in continuous domestic hot water
circulation systems with up to 140°F water temperatures.
- IAPMO Certified
- ICC ES-PMG™ 1038/1015
plumbing and heating systems
- NSF certified to CSA B137.5
(Canadian Standards Association)
- Certified to UL 263 & CAN/ULC S101
(US & Canadian re resistance ratings)
- Certified to ASTM E84 and CAN/ULC S102.2
FS/SD (25/50) (U.S. & Canadian plenum rating)
HUD (Housing and Urban Development) - MR 1276
SDR-9 PEX Tubing
ASTM F876/F877/CTS-OD SDR-9
Part Tubing Wall Nom. Weight Volume(Gal.)
No Size O.D. Thickness I.D. Per Ft Per 100 Ft
35020 ½" 0.625±.004 0.070+.010 0.475 .0600 0.92
35030 ⅝" 0.750±.004 0.083+.010 0.574 .0900 1.34
35040 ¾" 0.875±.004 0.097+.010 0.671 .1200 1.82
35060 1" 1.125±.005 0.125+.013 0.863 .2000 3.04
NOTE: Dimensions are in English units. Tolerances shown
are ASTM requirements. Viega FostaPEX is manufactured
within these specications. (These dimensions do not reect
the outer aluminum and PE layers.)
Minimum Bend Radius
CORRECT:
8 x O.D.
INCORRECT:
PIPE FLATTENS
AT THE BEND
Thermal Conductivity
SIZE Btu/h/ft/°F W(m.°C)
½" .484 .838
⅝" .516 .892
¾" .547 .946
1" .711 1.230
Minimum Burst Pressure (PSI)
Per ASTM F876/F877
SIZE 73°F (23°C) 180°F (82°C)
½" 480 215
⅝" 475 200
¾" 475 210
1" 475 210
EXAMPLE: To calculate the pressure drop of
a ½" line, 40 ft. long, with a 3 gpm ow rate,
calculate .122 psi x 40 ft. = 4.9 psi pressure
drop. Most plumbing codes require 8 psi
residual pressure at the xture. Refer to your
local code requirements.
*Indicates 8 fps maximum velocity required
by some plumbing codes.
NOTE: Maximum ow for each size based on
12 FPS velocity.
PSI x 2.307 = head loss.
Note: FostaPEX tubing may be bent to a minimum of
3.5 x O.D. with use of a Viega pipe bender.