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Zurn PEX
®
Plumbing Installation Guide
ZURN PEX, INC.
HIGHWAY 11 EAST, COMMERCE, TEXAS, U.S.A. 75428 • PHONE: 855-ONE-ZURN (855-663-9876) • FAX: 903-886-2583 • www.zurn.com
Zurn
Nom. Size
Avg. O.D.
Avg. I.D.
Min. Wall
Fluid Capacity
Wt. Per 100 Ft.
Designation
(CTS)
(In.)
(In.)
Thickness
(Gal/Foot)
(Lbs.)
Q1P
1/4"
.375 (3/8")
.225 (9/40")
.062
>0.001
3
Q2P
3/8"
.500 (1/2")
.350 (7/20")
.070
.005
4
Q3P
1/2"
.625 (5/8")
.475 (19/40")
.070
.009
5
Q4P
3/4"
.875 (7/8")
.671 (51/76")
.097
.018
10
Q5P
1"
1.125 (1-1/8")
.862 (25/29")
.125
.030
17
Q6P
1-1/4"
1.375 (1-3/8")
1.054 (1-2/37")
.153
.045
26
Q7P
1-1/2"
1.625 (1-5/8")
1.244 (1-10/41")
.181
.063
37
Q8P
2"
2.125 (2-1/2")
1.629 (1-22/35") 0.236
0.108
60
Zurn PEX Tubing Sizes and Dimensions
PEX Tubing Manufacturing Methods
There are three industrial methods for manufacturing PEX tubing; peroxide (Engel), silane, and radiation (EBeam), also referred
to as PEXa, PEXb, and PEXc, respectively.
PEXa, b, and c designations are not recognized by ASTM standards because they are often misinterpreted as a grading system
for PEX. In truth, the terms were used only as a means of identifying the method of production within the European marketplace.
The Silane (PEX-b) Method
Zurn Pex, Inc. chooses the Silane (PEX-b) method to manufacture its
tubing. While high degrees of cross-linking can be achieved using
this method, it is unnecessary because the density of the base resin
for Zurn PEX is higher compared to PEX-a and PEX-c methods. The
denser material produces structurally superior tubing at a lower
level of cross-linking which allows Zurn PEX to offer tubing with the
highest burst pressure ratings and tensile strength in the industry.
Silane manufactured Zurn PEX has significantly higher levels of
antioxidants compared to other methods of cross-linking. PEX-b
processes can tolerate additives which allow Zurn to incorporate
stabilizers in their formulations that improve the thermal, chlorine,
and UV resistance values of the tubing. The Zurn PEX formulation
and manufacturing process gives the customer the best combination
of chlorine and UV protection to maintain chlorine resistance even
after typical jobsite UV exposure. Additionally, the Silane method
permits the linking of up to four molecules at any given cross-linking
site, which contributes to the superior mechanical strength and
dimensional stability of Zurn PEX tubing.
Benefits of Zurn PEX Tubing
• UV Resistance
- Maximum exposure 6 months
• Chlorine Resistance
- PEX 5306 Designation – Generally a continuously circulating hot
water plumbing loop at 140°F.
• Temperature and Pressure Ratings
- 160 psi @ 73°F
- 100 psi @ 180°F
- 80 psi @ 200°F
Note:
The inherent flexibility of Zurn PEX tubing results in decreased
susceptibility to damage as a result of repeated pressure surges and less
noise due to pressure surges, commonly referred to as water hammer,
making water hammer arrestors unnecessary in typical PEX plumbing
applications. Water hammer arrestors are advisable only when local
code requires them. Zurn offers water hammer arrestors for residential and
commercial applications. See Zurn.com for product details.
Additional Applications
•
Reverse Osmosis (RO) –
Installing Zurn PEX in a reverse osmosis
application is ideal because it is not susceptible to the corrosive
effects of pure water. When using Zurn PEX in RO applications,
Zurn PEX CR insert fittings should also be used.
•
Deionized Water (DI) –
Installing Zurn PEX in a deionized water
application is ideal because it is not susceptible to the corrosive
effects of pure water. When using Zurn PEX in DI applications, Zurn
PEX CR insert fittings should also be used.