Installation Guide
Effective January 1, 2020
Why PEX-A Over PE-RT?
Benets of Choosing PEX-A
Let's Compare...
With more than 45 years of proven performance,
PEX-A is the leader in exible plastic piping systems.
It is the worlds most tested and approved PEX piping
product. It's high degree of crosslinking makes it the
toughest - but still most exible pipe on the market.
PE-RT is made of non-crosslinked piping material,
that is simply not as strong. It does not meet ASTM
F876/877 testing standards for burst and pressure.
The information contained herein is believed to be reliable, but no representations,
guarantees or warranties of any kind are made as to its accuracy.
© 2020 EVERFLOW
Features PEX-A PE-RT
Kink Repairable
200F temperature rating
potable listing for barrier pipe
Freeze Resistance
Over 4 decades of proven performance
Most tested pex pipe on market
Cross-Linked
Thermal Memory
Meets ASTM F876/877 burst standards
Best cold weather workability
Features PEX-A PE-RT
Level of Crosslinking
High degree of crosslinking
which provides toughness and
longevity.
None. PERT is simply an
over-stabilized HDPE.
Thermal Memory
Excellent thermal memory
which allows kink repairs.
Passes ASTM F876 Hot Bend
test.
Kink repair is not possible due
to poor or no thermal memory.
ASTM Hot Bend test cannot be
performed, since the pipes melt
when heated with hot air.
Maximum Operating
Temperature
As high as 200°F (93°C). Up to 180°F (82°C).
Pressure Rating
PEX is required to withstand
720 hrs of 150 psig constant
pressure with water at 210°F
(99°C) before failure. Pexow
PEX-A surpasses the 720 hrs.
PERT is only required to
withstand 48 hrs and cannot
meet the same temperature /
pressure ratings as PEX.
Environmental Stress Crack
(Resistance to Cracking)
PEX is required to withstand
100 hrs before failure. Pexow
PEX-A is tested to withstand
more than 1,000 hrs.
Unknown. PERT has no test
method for proving this. Testing
to the PEX standard shows that
PERT failed after 10 hrs.
Flexibility
Kink repair is possible. Coils
straighten with no eort, alow-
ing for much easier installation.
Minimizing need for straight
runs of tubing that are dicult to
transport
Kink repair is NOT possible.
Less Flexible
Performance
More than 40 years of proven
performance throughout North
America.
Limited short term experience.