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PEX Tubing

PEX Tubing is popular type of plastic pipe also known as cross-linked polyethylene. PEX has many applications, including hot and cold water piping in residential homes, radiant heated floors, snow and ice melting systems.

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  • Specifications
  • Connection Systems
  • Standards & Approvals
  • FAQ’s

Specifications

Size ID OD Wall Thickness Min. Bend Radius Recommended Circuit Length Max. Circuit Length Water volume gal/100ft Pipe weight lbs/100ft
3/8" 0.350" 0.500" 0.070" 4" 200' 300' 0.50 4.50
1/2" 0.475" 0.625" 0.070" 5" 300' 350' 0.92 5.80
5/8" 0.574" 0.750" 0.083" 6" 400' 500' 1.34 8.38
3/4" 0.677" 0.875" 0.097" 7" 500' 600' 1.83 11.0
1" 0.863" 1.125" 0.125" 9" 500' 750' 3.03 17.06

Pressure Ratings
100 psi @ 180°F
160 psi @ 74°F

Pressure Testing
Required to ensure complete system integrity and leak-free performance. Duration of testing is 30 minutes minimum to 1 hour (typical) or more if needed. 100 psi or x1.5 times the operating pressure are accepted practices and may vary according to local codes. Slight variations in readings may occur due to natural expansion/contraction of PEX with temperature changes.

Typical water temperatures
140°F for radiant floor heat applications in concrete, gypsum or other thermal mass slabs (both structural/reinforced and non-structural/non-reinforced).
160°F for installations of PEX under the subfloor between the joists. As low as 140°F with heat transfer plates. Consult with flooring manufacturer to ensure compatibility.
Up to 180°F for hydronic heating installations with baseboards or radiators.

Connection Systems

Table 1. Connection systems compatibility chart – by Type
Crimp System Clamp System Push-To-Connect System Press System Expansion System Compression Fittings
Barrier PEX Yes Yes Yes Yes No No
Non-Barrier PEX Yes Yes Yes Yes No No
PEX-AL-PEX No No No No No Yes

Crimp and clamp systems utilize brass or poly crimp style fittings and copper crimp rings or stainless steel cinch clamps. Most commonly used and widely available in the USA.
Push-to-connect fittings (also known as Push-Fit or Quick-Connect) are removable type fittings which do not require a tool. Common brands include SharkBite (Cash Acme), TecTite (Elkhart), Pro-Connect (Webstone Valves) and others.
Press system uses stainless steel sleeves and a special press tool. Originally developed by Viega.
Expansion system is a proprietary connection system from manufacturers such as Uponor (formerly Wirsbo) and Rehau.
Compression fittings consist of an insert, a split compression ring and a compression nut. Method requires adjustable pliers or crescent wrench to complete the connection.

Table 2. Connection systems compatibility chart – by Brand:
Everhot PEX Compatible with (Mfr/Brand) Not compatible with
Barrier & Non-Barrier PEX pipe Zurn (ZurnPEX)
Watts (RadiantPEX, RadiantPEX+, WaterPEX)
Viega (ViegaPEX)
Nibco (DuraPEX, BarrierPEX)
Cash Acme (Sharkbite)
Sioux Chief
and most others.
Uponor (ProPEX)
Rehau (Everloc)
Watts (Onyx)
Other proprietary systems
PEX-AL-PEX Watts (Radiant PEX-AL)
Uponor (MultiCor)
Viega (FostaPEX)
Other proprietary systems
*Only a few, most common brand names are listed here. In general, Everhot PEX tubing will work with all non-proprietary brands using connection systems from Table 1. This also includes fittings, rings and tools sold at home improvement stores and local plumbing supply houses.

Standards & Approvals

All standards, approvals and certifications below are for Everhot PEX products only.

Certifications & Approvals
Type Heating Applications Plumbing (Potable Water) Applications
Oxygen Barrier PEX Yes - NSF/ANSI 14, nsf-rfh No
Non-Barrier PEX Yes* Yes - NSF/ANSI 61 Annex G (nsf-pw-g), NSF/ANSI 372, NSF P171, AB1953
PEX-AL-PEX Yes - NSF/ANSI 14, nsf-rfh Yes - NSF/ANSI 61 Annex G (nsf-pw-g), NSF/ANSI 372, NSF P171, AB1953
*For open-loop systems only

Everhot Non-Barrier PEX piping is fully in compliance with 2014 SDWA “lead-free” regulations and is approved for potable water use.
Everhot Oxygen Barrier PEX tubing is approved for heating applications only.
All Everhot PEX is certified to the UPC (Uniform Plumbing Code).

Standards
Oxygen Barrier PEX ASTM F876/F877, CSA B137.5, DIN 4726
Non-Barrier PEX ASTM F876/F877/F2023, CSA B137.5
PEX-AL-PEX ASTM F1281, CSA B137.10

Frequently Asked Questions


Q: What’s the difference between oxygen barrier and non-barrier PEX?
A: Oxygen barrier type PEX pipe has an external polymer coating called EVOH or “oxygen diffusion barrier” and it’s the type used for all standard closed loop heating applications, including floor heating, baseboard/radiator heating and snow melting. Non-barrier PEX is the type mostly used for plumbing applications and it can also be used for open-loop heating systems.

Q: What’s the difference between open and closed loop systems?
A: A closed loop heating system contains water which circulates in a closed loop without mixing with fresh water or being exposed to the atmosphere. In a closed loop system, the water is heated by the boiler, pumped to the floor heating system (or radiators), then returns back to the boiler and the cycle repeats. Such systems often contain cast iron parts (boilers’ heating elements, pumps, etc.) and therefore would require PEX with O2 barrier.
An open loop heating system often utilizes the domestic hot water from a water heater or a storage tank and therefore has high oxygen content, which would require that the system’s components are either stainless steel, bronze or brass. Such systems do not require an O2 barrier and can use the non-barrier type PEX.

Q: Can I use PEX for solar applications?
A: No. Temperatures in solar systems often far exceed the 180°F rating of the PEX tube and would require either copper or corrugated steel pipes.

Q: Which size PEX tubing should I use?
A: For residential radiant floor heat installations, 1/2" PEX tubing is most common. For commercial, sizes up to 3/4" (and even 1" in some cases) can be used depending on the project size. For baseboards, 5/8" or 3/4" PEX are recommended, although very small baseboards can be fed with 1/2" PEX lines. For cast iron and aluminum radiators, 3/4" PEX is a standard size.
In small to mid size residential plumbing 3/4" PEX is used for mains and 1/2" for feeding water to the fixtures. In larger size homes, 1" size is sometimes used for main water lines.

Q: What’s the recommended spacing of PEX in a floor heating system?
A: When attaching to the subfloor between the joists with 16" OC spacing, 1/2" PEX is spaced at ~8" apart. For most other installations, including thin slabs over plywood, basements and structural (wire mesh or rebar reinforced) concrete slabs, the spacing is usually 10-12". The numbers above are typical for well insulated structures and may vary depending on local climate and temperature of water in the heating system.

Q: Does PEX color make a difference?
A: No. Tubing comes in different colors to help distinguish between hot and cold water lines with red and blue colored pipes respectively.

Q: Can I use Everhot PEX pipe with a different brand tools and fittings?
A: Yes, Everhot PEX tubing is compatible with majority of the brands sold in the US, including Watts, Viega, Nibco, Zurn and many others. See “Connection Systems” tab for compatibility details.

Q: Can PEX pipe be used for installation of an outdoor wood boiler or furnace?
A: Yes. 1" oxygen barrier PEX is most common for the job. For non-pressurized boilers, PEX piping without O2 barrier can be used.

40 products
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Product Description Part# / Brand Qty Unit Price
1/2" x 300ft Oxygen Barrier PEX Tubing

Free shipping


BPR1230
Everhot
 
x1
$81.95 / each
x3
$242.85 / skid
($80.95 / each)
1/2" x 500ft Oxygen Barrier PEX Tubing

Free shipping


BPR1250
Everhot
 
x1
$136.95 / each
x5
$674.75 / skid
($134.95 / each)
1/2" x 600ft Oxygen Barrier PEX Tubing

Free shipping


BPR1260
Everhot
 
x1
$161.95 / each
x4
$639.80 / skid
($159.95 / each)
1/2" x 900ft Oxygen Barrier PEX Tubing

Free shipping


BPR1290
Everhot
 
x1
$229.95 / each
x4
$891.80 / skid
($222.95 / each)
1/2" x 1000ft Oxygen Barrier PEX Tubing

Free shipping


BPR1210
Everhot
 
x1
$255.95 / each
x3
$737.85 / skid
($245.95 / each)
3/4" x 300ft Oxygen Barrier PEX Tubing

Free shipping

BPR3430
Everhot
 
x1
$133.95 / each
x3
$386.85 / skid
($128.95 / each)
3/4" x 500ft Oxygen Barrier PEX Tubing

Free shipping


BPR3450
Everhot
 
x1
$214.95 / each
x3
$626.85 / skid
($208.95 / each)
1" x 100ft Oxygen Barrier PEX Tubing

Free shipping


BPR1001
Everhot
 
x1
$87.95 / each
x2
$171.90 / skid
($85.95 / each)
1" x 300ft Oxygen Barrier PEX Tubing

Free shipping


BPR1030
Everhot
 
x1
$192.95 / each
x3
$569.85 / skid
($189.95 / each)
5/8" x 400ft Oxygen Barrier PEX Tubing

Free shipping


BPR5840
Everhot
 
x1
$146.95 / each
x3
$428.85 / skid
($142.95 / each)
5/8" x 500ft Oxygen Barrier PEX Tubing

Free shipping


BPR5850
Everhot
 
x1
$174.95 / each
x3
$512.85 / skid
($170.95 / each)
5/8" x 1000ft Oxygen Barrier PEX Tubing

Free shipping


BPR5810
Everhot
x1
$375.00 / each
x3
$1,097.85 / skid
($365.95 / each)
3/8" x 300ft Oxygen Barrier PEX Tubing

Free shipping

BPR3830
Everhot
 
x1
$79.95 / each
x4
$307.80 / skid
($76.95 / each)
3/8" x 500ft Oxygen Barrier PEX Tubing

Free shipping

BPR3850
Everhot
x1
$122.95 / each
x4
$471.80 / skid
($117.95 / each)
3/8" x 600ft Oxygen Barrier PEX Tubing

Free shipping


BPR3860
Everhot
x1
$141.95 / each
x4
$555.80 / skid
($138.95 / each)
3/8" x 1000ft Oxygen Barrier PEX Tubing

Free shipping

BPR3810
Everhot
x1
$238.95 / each
x3
$692.85 / skid
($230.95 / each)
1/2" x 100ft PEX Plumbing Tubing, Non-Barrier (Blue)

Free shipping

NPB1201
Everhot
 
x1
$26.00 / each
x3
$75.00 / skid
($25.00 / each)
1/2" x 100ft PEX Plumbing Tubing, Non-Barrier (Red)

Free shipping


NPR1201
Everhot
x1
$26.00 / each
x3
$75.00 / skid
($25.00 / each)
1/2" x 300ft PEX Plumbing Tubing, Non-Barrier (Blue)

Free shipping

NPB1230
Everhot
 
x1
$70.95 / each
x3
$202.50 / skid
($67.50 / each)
1/2" x 300ft PEX Plumbing Tubing, Non-Barrier (Red)

Free shipping


NPR1230
Everhot
x1
$70.95 / each
x3
$202.50 / skid
($67.50 / each)
1/2" x 500ft PEX Plumbing Tubing, Non-Barrier (Blue)

Free shipping

NPB1250
Everhot
x1
$118.95 / each
x3
$344.85 / skid
($114.95 / each)
1/2" x 500ft PEX Plumbing Tubing, Non-Barrier (Red)

Free shipping


NPR1250
Everhot
x1
$118.95 / each
x3
$344.85 / skid
($114.95 / each)
1/2" x 1000ft PEX Plumbing Tubing, Non-Barrier (Blue)

Free shipping

NPB1210
Everhot
x1
$215.95 / each
x3
$632.85 / skid
($210.95 / each)
1/2" x 1000ft PEX Plumbing Tubing, Non-Barrier (Red)

Free shipping


NPR1210
Everhot
x1
$215.95 / each
x3
$632.85 / skid
($210.95 / each)
3/4" x 100ft PEX Plumbing Tubing, Non-Barrier (Blue)

Free shipping


NPB3401
Everhot
x1
$40.95 / each
x3
$113.85 / skid
($37.95 / each)
3/4" x 100ft PEX Plumbing Tubing, Non-Barrier (Red)

Free shipping

NPR3401
Everhot
 
x1
$40.95 / each
x3
$113.85 / skid
($37.95 / each)
3/4" x 300ft PEX Plumbing Tubing, Non-Barrier (Blue)

Free shipping


NPB3430
Everhot
x1
$115.95 / each
x3
$329.85 / skid
($109.95 / each)
3/4" x 300ft PEX Plumbing Tubing, Non-Barrier (Red)

Free shipping

NPR3430
Everhot
x1
$115.95 / each
x3
$329.85 / skid
($109.95 / each)
3/4" x 500ft PEX Plumbing Tubing, Non-Barrier (Blue)

Free shipping


NPB3450
Everhot
 
x1
$179.95 / each
x3
$518.85 / skid
($172.95 / each)
3/4" x 500ft PEX Plumbing Tubing, Non-Barrier (Red)

Free shipping

NPR3450
Everhot
x1
$179.95 / each
x3
$518.85 / skid
($172.95 / each)
1" x 100ft PEX Plumbing Tubing, Non-Barrier (Blue)

Free shipping


NPB1001
Everhot
 
x1
$76.95 / each
x3
$212.85 / skid
($70.95 / each)
1" x 100ft PEX Plumbing Tubing, Non-Barrier (Red)

Free shipping


NPR1001
Everhot
x1
$76.95 / each
x3
$212.85 / skid
($70.95 / each)
1" x 300ft PEX Plumbing Tubing, Non-Barrier (Blue)

Free shipping


NPB1030
Everhot
x1
$165.95 / each
x3
$488.85 / skid
($162.95 / each)
1" x 300ft PEX Plumbing Tubing, Non-Barrier (Red)

Free shipping


NPR1030
Everhot
x1
$165.95 / each
x3
$488.85 / skid
($162.95 / each)
PEX-AL-PEX Reamer for 1/2", 3/4", 1" PEX-AL-PEX Tubing

PXT3511
Everhot
x1
$9.95 / each
1/2" x 300ft PEX-AL-PEX Tubing

Free shipping

APX1230
Everhot
x1
$108.95 / each
x4
$419.80 / skid
($104.95 / each)
1/2" x 500ft PEX-AL-PEX Tubing

Free shipping

APX1250
Everhot
x1
$173.95 / each
x4
$683.80 / skid
($170.95 / each)
1/2" x 1000ft PEX-AL-PEX Tubing

Free shipping

APX1210
Everhot
x1
$332.95 / each
x3
$959.85 / skid
($319.95 / each)
3/4" x 300ft PEX-AL-PEX Tubing

Free shipping

APX3430
Everhot
x1
$255.95 / each
1" x 300ft PEX-AL-PEX Tubing

Free shipping

APX1030
Everhot
x1
$346.95 / each
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Different types of PEX tubing

Non-Barrier or “Plumbing” PEX

This is the standard PEX type used in plumbing systems for hot and cold water distribution. Plumbing PEX tubing usually comes in red and blue colors to help installer distinguish between the hot and cold water piping. This type is not suitable for traditional closed-loop heating applications.

PEX with O2 (Oxygen) Barrier

Has an external coating of EVOH polymer, which creates a barrier around the pipe, preventing permeation of oxygen into water through the pipes’ walls and prevents decomposition of cast iron elements and formation of rust. This type is used strictly for heating applications and is not suitable for potable water plumbing.

PEX-AL-PEX tubing

A composite type pipe comprised of 3 layers - PEX, aluminum and PEX bonded together. This is the only PEX type which exhibits “memory” properties and keeps the shape it was bent to. Smaller diameters are used mainly with pre-manufactured plywood panels; larger – for wood boiler and furnace lines.

Advantages of PEX

PEX in Plumbing

One of the most important and distinctive advantages of PEX tubing over traditional copper plumbing is its cost. A typical 3/4" size “L” type copper pipe runs today for about $2.00/ft, whereas PEX is less than $0.50/ft, which is a four times difference in price.
Unlike rigid copper, brass and CPVC pipes, PEX is flexible and requires a fraction of the quantity of fittings used in rigid pipe installations, which further reduces material costs, produces more pressure at the fixture and significantly cuts installation time.
Due to the nature of PEX piping, it expands and contracts more then copper and brass pipes and is able to absorb more thermal stress produced by changes in water temperature. As a result, PEX has more resistance to bursting from water freezing inside the pipes and eliminates the issue of “singing pipes”.

PEX in Heating

There are no good alternatives to PEX tubing in the radiant floor heating industry. Warm floor systems are more efficient than all other types of heating systems and produce the highest comfort level available.
In hydronic baseboard and radiator systems, PEX tube can easily replace copper pipes with less material costs and installation time.
While most PEX manufacturers only offer 20-25 year warranty, the expected lifespan of the pipe is estimated to be around 50 years, as long as it’s properly installed, kept away from sunlight and used within approved temperature and pressure ranges.

How “lead-free” regulations are affecting PEX

Everhot non-barrier PEX was and remains compliant with the “lead-free” regulations taking effect in 2014 and is approved and certified for drinking water applications nationwide.

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