Download application notes - Endot Industries

APPLICATION NOTES
GENERAL:
Endot Endopoly and Golden Jet Pipe are flexible, black, coiled pipes and EndoPure is a blue pipe with a clear core, all of which
are produced from polyethylene resins with the classification of PE 4710/PE 3408 or PE 3406. The primary difference in the
resins is the wall thickness required to achieve a specific pressure rating. PE 4710/PE 3408 having the thinnest wall and PE 3406
having a slightly heavier wall for equivalent rating. The type of resin has little to do with the installation method. (See Size
Comparison Chart for details on product dimensions)
Endot Industries produces polyethylene pipe using PE 4710/PE 3408 and PE 3406 resins. Endot pipe is available in pressure
o
ratings of 100 PSI through 200 PSI. All pressure ratings are for pipe and tubing at 73.4 F. (See Temperature vs. Pressure Rating
Chart)
Endot produces three types of polyethylene water pipe, ID controlled pipe, manufactured to ASTM specification D2239,
commonly called IPS (Iron Pipe Size) pipe, OD controlled IPS pipe manufactured to ASTM D3035 and ASTM D2447, and OD
controlled tubing manufactured to ASTM specification D2737, known as CTS (Copper Tube Size) or as WST (Water Service
Tubing). ASTM (American Society for Testing and Materials) is a widely recognized organization that develops standards on
characteristics and performance of materials, products, systems and services.
Endot brand name products EndoPure, Endopoly, Golden Jet, Super Golden Jet, Black Diamond, Super and Poly-Xtra are
National Sanitation Foundation (NSF) Certified for use with potable drinking water. NSF Certification provides the user with the
highest level of confidence the pipe will not interact with nor release any chemicals into the water supply. NSF Certified pipe
and tubing is recognized by the permanent imprint of the NSF logo on the pipe. The NSF Certification also assures the user the
pipe is produced from one of the highest grades of raw material available.
All Endot pipe and tubing is permanently marked with indent printing. Color coded printing identifies various pressure rating
and grades.
STORAGE AND HANDLING:
Endot pipe should be stored so as to prevent damage by crushing or piercing. Coils of black pipe may be stored outdoors without
damage from weather or Ultraviolet exposure. Colored pipe contains Ultraviolet inhibitors to protect it from sunlight, but colored
pipe should be stored in a protected area away from Ultraviolet exposure. Do not expose pipe and tubing to excessive heat. Do
not drag across rough ground and avoid hitting or placement on sharp objects when storing or placing in service. Before pipe or
tubing is installed each length should be inspected for transport damage, cuts, punctures or excessive abrasion. Damage from
shipping or handling may have occurred. Although each coil is clean and sealed or capped when it leaves the factory dirt or
debris may have entered the pipe during installation. Flushing the pipe before final connections are made is good practice.
APPLICATION NOTES
SIZES - PRESSURE RATINGS - COIL SIZES
SIZE RANGE:
Iron Pipe Size (IPS)
Copper Tube Size (CTS or WST)
OD Controlled ASTM D3035 & D2447
1/2" through 3"
3/4" through 2"
3/4” through 3”
STANDARD INSIDE DIAMETER RATIO (SDR or SIDR):
Each size of IPS pipe (ASTM D2239) in each pressure range is rated with a SIDR number (Standard Inside Diameter Ratio).
The SIDR is determined by dividing the Nominal ID by the Minimum Wall Thickness.
STANDARD OUTSIDE DIAMETER RATIO (SDR or SODR):
OD controlled tubing (ASTM D2737, & D3035) is rated by Standard Outside Dimension Ratio (SODR) which is determined
by dividing the Nominal OD by the Minimum Wall Thickness.
When selecting external compression fittings for use on IPS or CTS products the SIDR or SODR must be considered. Selecting
external compression fittings by pressure rating could result in the selection of the wrong fitting. (See Size Comparison Chart)
Table # 1, Size Comparison Chart, lists the SIDR and SODR for each of the sizes and pressure ratings manufactured by Endot
Industries. See ASTM specifications D2737 and D2239 for details on IPS and CTS specifications.
PRESSURE RATINGS:
IPS pipe, ASTM D2239, is produced from 80 PSI to 200 PSI.
CTS tubing, ASTM D2737, is produced in 160 PSI with PE 3406 resin and 200 PSI with PE 4710/PE 3408 resin.
COIL SIZES:
The standard lengths of pipe coils range from 100 feet through 500 feet with each manufacturer having specific stock coil
sizes for each size and pressure rating. Endot's standard coil sizes may be found on the List Price Sheet for each product
type.
Coils of 1000 feet and longer can be produced to order. Endot Industries stocks large cable reels to allow the production of
very long lengths of the heavier pipe such as 160 PSI and 200 PSI where 1000 ft. coils may weigh up to 950 lbs. The use of
a reel allows easier handling of these heavy pipes yet eliminates the need for joints in long sections of pipe. Lengths of over
6000 feet may be packaged on reels. Smaller coils can also be custom produced.
APPLICATION NOTES
PRESSURE RATING VS. TEMPERATURE OF ENDOT PIPE AND TUBING
All pressure ratings of Endot polyethylene pipe and tubing are for an operating temperature of 73.4oF. Endot pipe can
be used at temperatures higher than the rated 73.4oF, but the user must consider the reduced pressure capacity of the
pipe. Every 10oF. rise or fall in temperature from 73.4oF will reduce or increase the pressure rating of the pipe by
approximately 12%.
ESTIMATED PRESSURE RATINGS OF PIPE
AT ELEVATED TEMPERATURE LEVELS
RATED PRESSURE OF PIPE @ 73.4 oF
100 PSI
TEMP oF
73.4
80
90
100
110
120
130
140
*150
*160
*170
*180
125 PSI 160 PSI 200 PSI
250 PSI
PRESSURE RATING OF PIPE AT EVELATED
TEMPERATURES
100
92
81
71
62
55
48
43
37
33
29
26
125
115
101
89
78
69
60
53
47
41
36
32
160
147
129
113
100
88
77
68
60
53
46
41
200
183
161
142
125
110
97
85
75
66
58
51
250
229
202
177
156
137
121
106
94
82
72
64
* CAUTION: Endot polyethylene pipe should not be used in applications where the normal, continuous
operating temperature is expected to be in excess of 140oF.
APPLICATION NOTES
INSTALLATION METHODS
JOINING IPS PIPE:
Two generally accepted methods of mechanically connecting sections of IPS (ASTM D2239) and CTS (ASTM
D2737) polyethylene water pipe and tubing together or joining it to other piping materials are available. For IPS the
most common method is insert fittings made from brass or PVC that seals using gear clamps. IPS pipe and CTS
tubing can be joined using external compression fittings that seal via internal gaskets and external clamping. Insert
fittings cannot be used on polyethylene water tubing (CTS) made to ASTM D2737.
The Size Comparison Chart lists the various sizes of IPS pipe made by Endot and the nominal dimensions of those
sizes. ASTM D2609 outlines the dimensional requirements for plastic insert fittings.
INSERT FITTINGS:
Use insert fittings with sufficient length to allow the application of two clamps on each side.
Use clamps produced from all stainless steel including the screw.
Place clamp screws 180o opposite each other.
Be sure clamps are over the barb of the fitting and not the flat.
Do not use any lubricants, sealing compounds or pipe dope. Use of these materials voids all warranties and may
cause damage to the pipe.
Heavy walled, large diameter pipe, 160 PSI and 200 PSI and 1-1/4" and larger, require the use of brass or galvanized
insert fittings and industrial type clamping devices. For 1-1/2" and 2" ID 200 PSI pipe external compression fittings
specifically designed for use with IPS pipe are strongly recommended. External compression fittings provide an
effective, reliable coupling for heavy wall, large diameter pipe.
In cold weather it may be necessary to warm the pipe in order to insert the fitting. DO NOT USE A TORCH TO
HEAT THE PIPE. Gently warm the pipe using hot water or by storing the pipe in a warm place prior to use.
EXTERNAL COMPRESSION FITTINGS:
External compression fittings can be used on both CTS and IPS products. Since IPS pipe is Inside Diameter
controlled the external type fitting has to have sufficient tolerance to accommodate the normal and acceptable
ASTM specified variations in OD. Ease of insertion of the pipe into the fitting will vary with the normal tolerance
variation of the fittings and the pipe.
It is important to specify the SIDR (or SODR) of the pipe in use when ordering external fittings. See The Size
Comparison Chart for SIDR information and for the comparison of sizes between the various resin types. When
assembling a joint using one of these fittings follow the manufacturer's directions carefully. If the fitting
manufacturer calls for insert stiffeners they must be used to insure a leak free joint.
DO NOT LUBRICATE THE PIPE
Lubrication other than water should not be used. Use of any lubricants, sealing compounds or pipe dope
voids all warranties for Endot pipe and tubing and may cause damage to the pipe or tubing.
APPLICATION NOTES
HEAT FUSION OF ENDOT PE 4710/PE 3408 PIPE & TUBING
INSTALLING PIPE AND TUBING USING FUSION WELDING:
Endot products may be joined by Thermal Heat Fusion. Follow the tooling manufacturer guidelines carefully when
joining pipe or tubing with thermal fusion. Thermal fusion joints when properly made are as strong or stronger than
the pipe itself and eliminate any flow restrictions.
HEAT FUSION TIMES FOR PE 4710/PE 3408 PIPE & TUBING AT A TEMPERATURE OF 500o F:
TIME IN SECONDS
SIZE
BUTT
FUSION
COOLING
TIME
SOCKET
FUSION
COOLING
TIME
CTS – ASTM D2737
¾”
1”
1 ¼”
1 ½”
2”
8 – 10
14 – 17
16 – 19
18 – 21
22 – 25
50
50
50
60
60
9 – 10
11 – 13
14 – 16
16 – 18
18 – 20
30
30
30
40
40
IPS – ASTM D2239
½”
¾”
1”
1 ¼”
1 ½”
2”
8 - 10
14 - 16
16 – 19
18 – 21
24 – 30
30 – 34
50
50
50
70
90
90
9 – 10
12 – 14
15 – 17
17 – 20
20 – 23
24 – 27
30
30
40
40
40
40
CAUTION: Excessive heating times can over heat the pipe or fitting and result in brittle joints. Shortened heating
times can result in an incomplete bond of materials and a weak joint that may fail.
Endot Industries, Inc. does not recommend fusion of Endot pipe and tubing to materials of a different grade or
specification or to material classified as “wide spec”. Fusion joints between dissimilar materials may fail even when
the time and temperature settings are correct.
Polyethylene pipe is chemically inert and there are no known glues that can be used to create effective joints that will
stand up over long periods of time.
APPLICATION NOTES:
WARMING PIPE TO ASSEMBLE FITTINGS:
Polyethylene pipe may develop some ovality from storage and in cold weather it may be necessary to warm the pipe
to enable the insertion of a fitting or the assembly of a compression fitting. To warm polyethylene pipe DO NOT
USE A TORCH TO HEAT THE PIPE and never heat the plastic above 2000 F. The recommended method for
warming the pipe is immersion in hot water or warming with a hair dryer. Use care to warm the inside of the pipe
was well as the outside, never heat the outside of the pipe only.
Polyethylene does not become brittle when subjected to extremely low temperatures, but does become much stiffer.
The workability of polyethylene increases with higher temperatures. The heavier the wall thickness of the pipe or
tubing being used the more stiffness will be encountered in cold weather. It is recommended that the pipe or tubing
be kept in a warm environment prior to installation outdoors in the winter months to keep it as flexible as possible.
LUBRICATION AND SEALING COMPOUNDS:
The use of any type of lubricant including detergent or soap lubricants to ease the insertion of the pipe or
tubing into a fitting voids all warranties on the pipe. Detergents, soap and surfactants may cause stress cracking
in polyethylene and should never be used.
Endot does not recognize any pipe dope or sealing compound as acceptable for use with Endot polyethylene pipe or
tubing, regardless of manufacturer's claims. All pipe sealant and dope may cause stress cracking in polyethylene and
should never be used.
The use of any pipe dope or sealing compound voids all warranties.
APPLICATION NOTES
SITE PREPARATION:
When polyethylene pipe or tubing is to be installed in a trench site preparation is important. Pipe must be surrounded with a
bed of sand or other backfill material that is 1/2" or less in diameter and is free from rocks, sharp objects and debris that might
puncture the pipe.
The base of the trench must be lined first with sand and the pipe uniformly and continuously supported for its entire length.
Pipe should be placed at a depth at least 12 inches below the local frost line and a minimum of 18 inches below the finished
surface grade for light loading and at least 24 inches for sites with heavy loading.
Trenches may be curved to avoid obstacles with the minimum trench radius being 24 inches. Polyethylene's natural flexibility
allows it to be routed around objects to eliminate fittings.
ASTM D2774, F645-95 and ASTM D2321 cover the installation and site preparation for polyethylene pipe and tubing in
detail and should be followed by installers. Check with you local code officials to determine specific local requirements.
THERMAL EXPANSION AND CONTRACTION:
Polyethylene is stable in its cross section dimensions, but can expand and contract longitudinally with changing temperatures.
Allowing polyethylene pipe to naturally "snake" in a trench will provide adequate slack to compensate for this expansion and
contraction. A minimum 12 inches of slack per 100 feet of pipe must be allowed to compensate for thermal changes.
INSTALLATION IN CONTAMINATED SOILS:
Hydrocarbon fuels, certain organic solvents and a few other chemical compounds can have a serious negative effect on
polyethylene if present in sufficient quantity. Water carried in any piping system is vulnerable to contamination by absorption
of chemicals through the walls or joints. Water lines produced from any material should not be installed in areas when known
chemical contamination is present or if chemical spills are likely to occur. See a chemical resistance chart to determine if a
particular chemical has any negative effects on polyethylene pipe and tubing.
PRESSURE TESTING OF INSTALLATIONS:
All installations must be pressure tested prior to backfilling. Check all joints and connections for leaks before backfilling the
trench. ASTM D2774 and The Plastic Pipe Institute technical reference #TR-31/88 provides detailed testing information.
Pressure tests must be made using water, Do Not pressure test with air.
It is the users responsibility to select the proper fitting and to ensure the assembly is correct and leak tight. All joints must be
pressure tested prior to backfilling. Endot assumes no liability for the improper installation of any fitting nor the failure to test
the joint prior to backfilling a trench.
CRIMPING PIPE TO STOP FLOW:
The use of crimping tools to shutting off flow in polyethylene pipe is acceptable. It is critical that the crimping tool used
meets the following criteria:
1) The tool is specifically designed for use with polyethylnene pipe.
2) The tool is set up for, or uses adaptors to match the size (OD) of the pipe. Using a tool designed for smaller diameter
pipe on larger diameter pipe will damage the pipe and require replacement of that section of pipe.
3) The tool is only used once on a specific place on the pipe. A pipe once crimped should never be crimped in the same
place again.
4) Following crimping the same tool can be used to re-round the pipe to provide full flow capacity to the line.
APPLICATION NOTES
INSTALLING PIPE USING DIRECTIONAL BORING EQUIPMENT:
Endot pipe and tubing may be installed using directional boring equipment. The boring tool should create a hole that is
25% larger than the outside diameter of the pipe or tubing to allow the pipe to pass through the soil without being
abraded or subjected to excessive tension. All bends and changes in elevation should be within the guidelines
established for polyethylene pipe and tubing.
Pipe or tubing installed with directional boring equipment must not be subjected to tensions greater than the tensile
strength of the product being used. Excessive tension can cause damage to polyethylene pipe. The nominal tensile
strength of 200 PSI, PE 4710/PE 3408, 3/4" and 1" pipe (IPS) and tubing (CTS) is as follows;
ASTM D2239 Pipe (IPS)
3/4"
1"
1200 PSI
1900 PSI
ASTM D2737 Tubing (CTS)
800 PSI
1300 PSI
In some soils it may be necessary to grout the bore hole to prevent collapse prior to installation of the pipe. Grouting
will maintain the hole and reduce friction that could damage the pipe.
Endot will not be responsible for damage to the pipe when boring takes place in soils that do not maintain a open hole
during pipe installation or that contain sharp rock or debris that cut or scrape the pipe causing damage that may reduce
the wall thickness.
NOTE: Pipe laying in sun light can increase significantly in temperature often to temperatures as high as 140 o F. If
pipe is bored at elevated temperatures it is possible that the pipe will stretch or elongate. If the pipe stretches greater
than 5% the pipe is damaged and may not be capable of carrying it’s rated pressure. Endot will not warranty pipe that
has been stretched greater than 5%.
APPLICATION NOTES
WELL PIPE INSTALLATION:
Polyethylene pipe is an ideal product for use in both deep and shallow well applications. See the Depth Setting Chart
for a guide to the depth settings that various grades of pipe can be used at. Although claims for deeper settings have
been made they exceed the design ratings for all Polyethylene pipe and the installer risks rupturing the pipe if the
pressure developed by the column of water and the pump pressure exceeds the pressure rating of the pipe. No warranty
claims for depths greater than those listed will be honored.
The actual installation includes the use of insert fittings and stainless steel clamps as previously covered. Torque
arrestors and centering devices should be used to prevent the pipe and wires from rubbing the well casing. The
installation of torque arrestors and other well hardware should be per the manufacturer instructions. If the pipe has a
submersible pump suspended on it a safety rope must be installed to assist in pulling the pump. When a long length of
pipe is pulled from a well care must be taken to prevent kinking of the pipe. The maximum bend radius of polyethylene
pipe is 18 inches. If the pipe is kinked the section must be removed since a weak point has been created at the kink.
OTHER USES:
Polyethylene pipe and tubing is used in many other applications. Lawn Irrigation is one of the more popular uses.
Generally the pipe is plowed into the ground without preparing a trench. This method works well if the soil is free of
rocks and other sharp objects. The denser the soil the more difficult this method of installation can become due to the
increased tension placed on the pipe. The use of heavier walled pipe can overcome some of these problems.
For above grade applications Endot recommends the use of black pipe or tubing. Endot produces EndoPure, blue pipe
and tubing, which is Ultraviolet stabilized, but all colored HDPE pipe and tubing has a finite life and should not be
installed where continuously exposed as in above ground installations. Endot EndoPure has been tested for a five (5)
year life span without fading or UV damage in the Florida latitude.
High Density Polyethylene is a very stable plastic compound allowing the use of pipe manufactured from it to be used
in numerous applications. Before attempting to use polyethylene in applications other than for transport of water one
should check with an knowledgeable source to determine if the product is suitable.
Certain chemicals may soften polyethylene and can degrade its ability to withstand internal pressure. If the
polyethylene pipe is to be used to transport chemicals or chemicals are present in the pipe environment it is the
responsibility of the user to determine if the chemicals are compatible with polyethylene pipe.
SPECIFICATIONS FOR PE 4710/PE 3408 - ENDOPOLY PIPE AND TUBING
Endot "Endopoly - PE 4710 / PE 3408" pipe and tubing is produced to the following specification and accepted by the
following code authorities;
ASTM D3350 – Cell Classification ASTM D1505 – Density
ASTM D1238 – Melt Index
ASTM D 638 - Tensile Strength
ASTM D2837 – Hydrostatic Design Basis
ASTM D 790 – Flexural Modulus
ASTM D 746 – Brittleness Temp.
ASTM F1473 – PENT (hours)
445574C
0.959 g/cc
>0.08 g/10 min.
>3600 PSI
1600 PSI @ 20oC
1000 PSI @ 80 oC
150,000 PSI
< -103oF
4000
Thermal Expansion Contraction:
The coefficient of expansion of PE is .00007 inch/inch/oF
Or Approximately 1.7 inches/10of/200 feet of pipe
Other Specifications and Code Acceptance:
AWWA C901
BOCA
National Sanitation Standard 14
LOCAL BUILDING CODES:
Application Notes are supplied with the intention of advising the user of Endot Polyethylene Pipe and Tubing of the
proper methods of use and installation.
It is the users responsibility to be sure the installation meets local building codes prior to beginning work.
If unsure of applicable codes check with your local code official.
For further information or assistance in selecting or using polyethylene pipe and tubing contact Endot Industries, Inc.,
60 Green Pond Road, Rockaway, NJ 07866, 201-625-8500 or 800-443-6368.
SPECIFICATIONS FOR PE 4710/PE 3408 - ENDOPURE PIPE AND TUBING
Endot "EndoPure - PE 4710/PE 3408" pipe and tubing is produced to the following specification and accepted by the
following code authorities;
ASTM D3350 – Cell Classification ASTM D1505 – Density
ASTM D1238 – Melt Index
ASTM D 638 - Tensile Strength
ASTM D2837 – Hydrostatic Design Basis
ASTM D 790 – Flexural Modulus
ASTM D 746 – Brittleness Temp.
ASTM F1473 – PENT (hours)
Raw Material
445574A
Final Product
445574D
0.959 g/cc
>0.08 g/10 min.
>3600 PSI
1600 PSI @ 20oC
1000 PSI @ 80 oC
150,000 PSI
< -103oF
4000
Thermal Expansion Contraction:
The coefficient of expansion of PE is .00007 inch/inch/oF
Or Approximately 1.7 inches/10of/200 feet of pipe
Other Specifications and Code Acceptance:
AWWA C901
BOCA
National Sanitation Standard 14
LOCAL BUILDING CODES:
Application Notes are supplied with the intention of advising the user of Endot Polyethylene Pipe and Tubing of the
proper methods of use and installation.
It is the users responsibility to be sure the installation meets local building codes prior to beginning work.
If unsure of applicable codes check with your local code official.
NOTE: EndoPure is UV stabilized, , but all colored HDPE pipe and tubing has a finite life and should not be installed
where continuously exposed as in above ground installations. Endot EndoPure has been tested for a five (5) year life
span without fading or UV damage in the Florida latitude.
For further information or assistance in selecting or using polyethylene pipe and tubing contact Endot Industries, Inc.,
60 Green Pond Road, Rockaway, NJ 07866, 201-625-8500 or 800-443-6368.
SPECIFICATIONS FOR PE 3406
Endot "GOLDEN JET, SUPER GOLDEN JET, BLACK DIAMOND - PE 3406" pipe and tubing is produced to the
following specification and accepted by the following code authorities;
ASTM D3350 – Cell Classification ASTM D1505 – Density
ASTM D1238 – Melt Index
ASTM D 638 - Tensile Strength
ASTM D2837 – Hydrostatic Design Basis
ASTM D 790 – Flexural Modulus
ASTM D 746 – Brittleness Temp.
ASTM F1473 – PENT (hours)
445574C
0.959 g/cc
>0.08 g/10 min.
>3600 PSI
1600 PSI @ 20oC
1000 PSI @ 80 oC
150,000 PSI
< -103oF
4000
Thermal Expansion Contraction:
The coefficient of expansion of PE is .00007 inch/inch/oF
Or Approximately 1.7 inches/10of/200 feet of pipe
Other Specifications and Code Acceptance:
AWWA C901
BOCA
National Sanitation Standard 14
LOCAL BUILDING CODES:
Application Notes are supplied with the intention of advising the user of Endot Polyethylene Pipe and Tubing of the
proper methods of use and installation.
It is the users responsibility to be sure the installation meets local building codes prior to beginning work.
If unsure of applicable codes check with your local code official.
For further information or assistance in selecting or using polyethylene pipe and tubing contact Endot Industries, Inc.,
60 Green Pond Road, Rockaway, NJ 07866, 201-625-8500 or 800-443-6368.
APPLICATION NOTES
GEOTHERMAL HEAT PUMP SYSTEMS
ENDOPOLY
THE "PREMIUM" GEOTHERMAL PIPE
5 REASONS TO USE ENDOPOLY GEOTHERMAL PIPE
1. ENDOPOLY is produced using Premium PE 4710 Polyethylene resin that exceeds the requirements of IGSHPA (International Ground
Source Heat Pump Association).
2. ENDOPOLY is produced from Virgin High Density Polyethylene Resin with a cell classification of 445574
3. ENDOPOLY is backed by a Lifetime Warranty, which is backed by one of the largest and
oldest PE extruders in the nation,
35 years of continuous operation and production.
4. ENDOPOLY pipe quality is continuously monitored and third party Certified by NSF, the National Sanitation Foundation.
5. ENDOPOLY is available in standard coils and custom lengths with or without U-bends to meet your needs.
WHY THE RESIN IS IMPORTANT
Endot uses Bi-Modal or PE 4710 resin that is 25% stronger than the old PE 3408/PE 3608 resins.
ASTM D3035-07 PE 4710 resin is rated as SDR 13.5 = 160 PSI
&
SDR 11 = 200 PSI.
WHY ENDOT IS THE BEST CHOICE FOR GEOTHERMAL PIPE
 Endot is one of the largest producers of small diameter pipe
 Endot has made quality polyethylene pipe continuously for over 35 years
 Endot is owned and operated by its founders and they have a proven commitment to making the
finest polyethylene products in each industry Endot serves.
 Endot products are backed by a Lifetime Warranty with a 25 year cost of replacement warranty.
 Endot has four manufacturing facilities and many distributor locations around the USA
assuring a continuous supply of product when and where you need it.
¾”, 1” and 1-1/4” pipe is available with Factory installed U-Bends.
APPLICATION NOTES
RADIANT HEATING
Endot polyethylene (PE) pipe is a versatile product that can reduce the cost of radiant heating installations and produce
a system superior to metal piped systems.
CORROSION RESISTANCE:
exceptional longevity.
Endot PE pipe is nearly chemically inert and provides a system with
INSTALLATION EASE: Endot PE pipe is lightweight, flexible and available in extra long continuous
lengths for faster, joint free installations.
TOUGH AND DURABLE: Endot PE pipe can endure the punishment of the most demanding installation.
Produced from the highest quality polyethylene resins available Endot/Yardley pipe can be installed in
concrete and under floors with confidence it will perform for many years.
SUPERIOR FLEXIBILITY: Endot PE pipe can be installed in long continuous lengths and PE 4710 / PE
3408 coiled pipe can be cold bent to a minimum radius of 10 to 20 times the nominal pipe diameter to
provide for contouring to installation conditions. Ordinary shifting and settling of soil will not fracture or
shear the pipe.
The Heat Transfer K Value for High Density Polyethylene is 2.5. (2.5 BTU/hr/oF/f2/f)
LIFETIME WARRANTY: Backed by one of the strongest warranties in the industry, Endot products carry a lifetime
warranty with a 25 year cost of replacement guarantee.
TYPICAL RADIANT HEATING APPLICATIONS:
Snow Melting Systems
Livestock Building floor heating
Sports Field Heating to extend playing seasons.
Radiant Home Heating. (for systems with constant operating temperatures of under 120oF)
Corrosion inhibitors must be used when plastic pipe is installed in a radiant heating system.
Temperature vs. Pressure Chart before selecting a pipe for radiant heating systems.
Consult your local plumbing and heating contractor for design and installation specifics.
Consult Endot
APPLICATION NOTES
ICE SKATING RINKS
Polyethylene (PE) pipe is a cost effective product for use in the construction of ice skating rink freezing systems. PE is
up to 5 times less expensive than steel pipe and eliminates the need for costly skilled labor to weld numerous joints.
The labor savings using PE can be up to 75% of a steel pipe installation.
PE can be produced in extra long coils of up to 1000 feet or on wooden reels of up to 7500 feet thus eliminating joints
and further reducing installation cost. The total time of installation can be reduced when using PE due to PE's light
weight and flexibility.
PE is abrasion resistant and can be encased in a concrete or sand base with no concern as to corrosion or other damage.
Care in handling must be observed during shipping, storage and installation to prevent punctures from sharp objects.
PE is nearly chemically inert and is suitable for use with brine and ethylene glycol solutions. See the Chemical
Resistance Chart for details on specific chemicals.
The Heat Transfer K Value for High Density Polyethylene is 2.5. (2.5 BTU/hr/oF/f2/f)
INSTALLATION SUGGESTIONS
Inspect all pipe prior to installation for damage such as kinking, cuts or abrasions. Do not use pipe that is damaged.
The base upon which the pipe will be installed should be uniform, smooth and free of sharp objects.
If insert fittings are used they should be located outside of the actual ice area for ease of service. Long lengths of pipe
facilitate this method of installation. All clamps must be stainless steel and two clamps should be used on each side of
a fitting. (See Joining Pipe with Insert Fittings)
Pipe can also be joined using thermal fusion for even greater reliability. Follow the fusion equipment instructions
carefully.
Installed pipe must be protected from damage prior to embedment. Do not allow wheelbarrows and other equipment to
travel over the exposed pipe.
The entire system must be pressure tested with water to 150% of system working pressure prior to embedment. DO
NOT PRESSURE TEST WITH AIR.
APPLICATION NOTES
CONCRETE SLAB INSTALLATIONS & RADIANT HEATING
Endot polyethylene (HDPE) pipe and tubing are versatile products that are ideal for installing potable water systems
and radiant heating systems especially when these systems are installed in a concrete slab. Using HDPE will provide a
system that is superior to metal piped systems.
The primary advantage of HDPE pipe or tubing in a concrete slab installation is CORROSION
RESISTANCE. Concrete is a highly alkaline material and this alkalinity will rapidly corrode copper pipe
and tubing whereas HDPE is unaffected by this alkalinity. Endot PE pipe is nearly chemically inert and
provides a system with exceptional longevity. (See Chemical Resistance Chart)
INSTALLATION EASE: Endot HDPE pipe is lightweight, flexible and available in extra long continuous
lengths for faster, joint free installations.
TOUGH AND DURABLE: Endot HDPE pipe can endure the punishment of the most demanding
installation. Produced from the highest quality polyethylene resins available Endot pipe can be installed in
concrete and under floors with confidence it will perform for many years.
SUPERIOR FLEXIBILITY: Endot HDPE pipe can be installed in long continuous lengths and PE 4710/PE
3408 coiled pipe can be cold bent to a minimum radius of 10 to 20 times the nominal pipe diameter to
provide for contouring to installation conditions. Ordinary shifting and settling of soil will not fracture or
shear the pipe.
SUPERIOR CRUSH RESISTANCE: Endot PE pipe is extremely strong and will withstand high load
conditions without fear of collapse or damage.
LIFETIME WARRANTY: Backed by one of the strongest warranties in the industry, Endot EndoPure carries a
Lifetime Warranty with no replacement limit, Endot Endopoly products carry a lifetime warranty with a 25 year cost of
replacement guarantee.
TYPICAL RADIANT HEATING APPLICATIONS:
Potable Water Service Supply
Snow Melting Systems
Livestock Building floor heating
Sports Field Heating to extend playing seasons.
Radiant Home Heating. (for systems with constant operating temperatures of under 120oF)
The Heat Transfer K Value for High Density Polyethylene is 2.5. (2.5 BTU/hr/oF/f2/f)
Corrosion inhibitors must be used when plastic pipe is installed in a radiant heating system.
Temperature vs. Pressure Chart before selecting a pipe for radiant heating systems.
Consult your local plumbing and heating contractor for design and installation specifics.
Consult Endot
APPLICATION NOTES
FORCE MAIN SEWER SYSTEMS
Endot recommends that only pipe and tubing made from NSF Certified resin be used in a sewer application.
Endot’s NSF CERTIFIED PE-4710/PE-3408 pipe and tubing are versatile products that are ideal for transport of waste
water and sewage in force main sewer systems. NSF Certified resins assure the pipe and tubing is capable of
withstanding various chemicals that might be found in waste water that will cause stress cracking of lower quality
resins. NSF Certified resins are also pressure rated, a critical issue with force mains. Using NSF CERTIFIED resin
will provide a system that is superior to metal piped systems.
The resin used to produce pipe and tubing for a force main sewer system should carry a minimum cell class rating of
445574C according to ASTM D3350. (NOTE: “C” = black resin, if colored pipe is produced the letter must be “E”
which equals colored with UV Stabilizers.)
NSF CERTIFIED pipe and tubing is pressure rated and able to handle the pressure of grinder pumps.
Endot’s NSF Certified resins carry a Hydrostatic Design Rating from the Plastic Pipe Institute assuring the
ability to withstand pressure for 50 to 100 years of service. (NOTE: Non-NSF Certified resins are not likely
to be pressure rated and questionable for use in a pressurized system.)
Endot NSF CERTIFIED PE-47/PE-3408 pipe is nearly chemically inert and provides a system with
exceptional longevity. (See Chemical Resistance Chart) Non-NSF resins may not be resistant to chemical
attack that causes stress cracking.
INSTALLATION EASE: Endot NSF CERTIFIED pipe is lightweight, flexible and available in extra long
continuous lengths for faster, joint free installations.
TOUGH AND DURABLE: Endot NSF CERTIFIED pipe can endure the punishment of the most demanding
installation. Produced from the highest quality polyethylene resins available Endot pipe can be buried with
confidence it will perform for many years.
SUPERIOR FLEXIBILITY: Endot NSF CERTIFIED pipe can be installed in long continuous lengths and
NSF CERTIFIED coiled pipe can be cold bent to a minimum radius of 10 to 20 times the nominal pipe
diameter to provide for contouring to installation conditions. Ordinary shifting and settling of soil will not
fracture or shear the pipe. Handling on the job site is not as difficult as PVC and other products that can be
brittle and subject to breakage if dropped or accidentally hit by equipment.
SUPERIOR CRUSH RESISTANCE: Endot PE pipe is extremely strong and will withstand high load
conditions without fear of collapse or damage.
NOTE: NSF Certified resins are repeatable in characteristics such as flexibility, pressure rating, crush
resistance etc. Non-NSF resins are not likely to be consistent in these characteristics.
LIFETIME WARRANTY: Backed by one of the strongest warranties in the industry, Endot EndoPure carries a
Lifetime Warranty with no replacement limit, Endot Endopoly products carry a lifetime warranty with a 25 year cost of
replacement guarantee.